Undifferentiated Symptoms — MCQs
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A 64-year-old woman presents with a 10-week history of fatigue and progressive shortness of breath on exertion. She has lost 7kg in weight. Examination reveals pale conjunctivae and a palpable abdominal mass in the right upper quadrant. Blood tests show: Hb 78 g/L, MCV 72 fL, ferritin 8 μg/L. Faecal immunochemical test (FIT) is 250 μg Hb/g faeces. What is the most appropriate management pathway?
A 42-year-old man presents with a 9-week history of fever up to 38.6°C, night sweats, and 8kg weight loss. He reports recent travel to Spain. Examination reveals hepatosplenomegaly. Blood tests show pancytopenia with Hb 102 g/L, WCC 3.1 × 10⁹/L, platelets 98 × 10⁹/L. Liver enzymes are mildly elevated. Blood cultures are negative. What is the most appropriate diagnostic test?
A 69-year-old man with osteoarthritis presents for review of his pain management. He takes paracetamol 1g QDS and ibuprofen 400mg TDS but continues to have significant pain (7/10) affecting his activities of daily living. He has a history of ischaemic heart disease with previous myocardial infarction 3 years ago. eGFR is 52 ml/min. What is the most appropriate modification to his analgesic regimen?
A 37-year-old woman presents with a 5-week history of daily fever peaking at 39.2°C, occurring mainly in the late afternoon. She reports a salmon-pink rash that appears with the fever then disappears. She has severe arthralgia affecting wrists, knees, and ankles. Blood tests show: WCC 16.5 × 10⁹/L (neutrophils 13.2), CRP 145 mg/L, ferritin 4800 μg/L. ANA, RF, and blood cultures are negative. What is the most likely diagnosis?
A 53-year-old woman presents with a 7-week history of profound fatigue, difficulty concentrating, and feeling cold. She has gained 3kg despite reduced appetite. Blood tests show: TSH 0.05 mU/L (normal 0.5-5.0), free T4 32 pmol/L (normal 10-22), free T3 8.2 pmol/L (normal 3.5-6.5). Heart rate is 96 bpm regular. What is the most likely explanation for this clinical picture?
A 60-year-old man with COPD presents with a 6-week history of worsening fatigue, reduced appetite, and 5kg weight loss. He reports increasing breathlessness but no chest pain. He is a current smoker (40 pack-years). Examination reveals reduced breath sounds and dullness to percussion at the right base. Oxygen saturations are 93% on air. What is the single most important investigation to arrange?
A 44-year-old woman presents with a 12-week history of severe fatigue and widespread pain affecting her neck, back, arms, and legs. She describes the pain as constant, aching, and rated 7/10 in severity. She reports poor sleep, waking frequently, and feeling unrefreshed. Examination reveals tenderness over multiple areas but no joint swelling or objective weakness. Blood tests including FBC, CRP, ESR, TFTs, and calcium are all normal. Using the WHO analgesic ladder, what is the most appropriate initial management approach?
A 57-year-old woman presents with a 9-week history of intermittent fever (38.2-38.8°C), night sweats, and a 7kg weight loss. She recently returned from volunteering in rural India 4 months ago. Examination reveals enlarged cervical lymph nodes (2cm, rubbery, non-tender). Chest X-ray shows bilateral hilar lymphadenopathy. Mantoux test shows 18mm induration at 72 hours. What is the most appropriate next step in management?
According to current guidance for primary care assessment of unexplained weight loss in adults, which of the following defines clinically significant unintentional weight loss requiring investigation?
A 49-year-old woman presents with a 14-week history of fatigue and a 6kg weight loss. She describes generalised muscle aches and reports that her urine has been darker than usual. Examination reveals mild jaundice and hepatomegaly of 3cm below the costal margin. Blood tests show: bilirubin 45 μmol/L, ALT 450 U/L, ALP 180 U/L, albumin 38 g/L. What is the most likely diagnosis?
Undifferentiated Symptoms UK Medical PG Practice Questions and MCQs
Question 111: A 64-year-old woman presents with a 10-week history of fatigue and progressive shortness of breath on exertion. She has lost 7kg in weight. Examination reveals pale conjunctivae and a palpable abdominal mass in the right upper quadrant. Blood tests show: Hb 78 g/L, MCV 72 fL, ferritin 8 μg/L. Faecal immunochemical test (FIT) is 250 μg Hb/g faeces. What is the most appropriate management pathway?
- A. Arrange urgent direct access upper GI endoscopy within 2 weeks
- B. Refer urgently via 2-week-wait pathway for suspected lower GI cancer (Correct Answer)
- C. Commence oral iron supplementation and repeat FBC in 4 weeks
- D. Arrange CT abdomen and pelvis with contrast within 2 weeks
- E. Refer to gastroenterology for colonoscopy within 6 weeks
Explanation: ***Refer urgently via 2-week-wait pathway for suspected lower GI cancer*** - This patient presents with multiple red-flag features for **colorectal cancer**, including severe **microcytic iron deficiency anaemia**, significant **unexplained weight loss**, a highly **positive Faecal Immunochemical Test (FIT)**, and a **palpable abdominal mass**. - According to **NICE guidelines (NG12)**, these findings necessitate an urgent **two-week-wait (2WW)** referral for suspected lower gastrointestinal cancer to ensure prompt diagnosis and management. *Arrange urgent direct access upper GI endoscopy within 2 weeks* - While **iron deficiency anaemia** can be caused by upper GI bleeding, the **palpable abdominal mass** in the right upper quadrant and the highly **positive FIT test** strongly indicate a **lower GI source** of bleeding or pathology. - An upper GI endoscopy would not investigate the likely source of pathology in the lower gastrointestinal tract. *Commence oral iron supplementation and repeat FBC in 4 weeks* - Commencing **oral iron** without investigating the underlying cause of severe **iron deficiency anaemia** in an older patient with multiple red flags for malignancy is a dangerous delay in diagnosis. - This approach is inappropriate as it overlooks the high likelihood of serious pathology, such as **gastrointestinal cancer**, which requires urgent evaluation. *Arrange CT abdomen and pelvis with contrast within 2 weeks* - While a **CT scan** is valuable for staging confirmed malignancies, it is typically not the initial diagnostic investigation in primary care for suspected **colorectal cancer**. - The standard pathway involves specialist assessment via a **2-week-wait referral**, which will usually lead to **colonoscopy** as the primary diagnostic tool for lower GI pathology, followed by imaging if cancer is confirmed. *Refer to gastroenterology for colonoscopy within 6 weeks* - A 6-week timeframe for a colonoscopy referral is considered routine or semi-urgent, which is unacceptably long for a patient with multiple high-risk features for **colorectal cancer**. - The presence of severe anaemia, weight loss, an abdominal mass, and a positive FIT mandates an **urgent 2-week-wait referral** to expedite diagnosis and prevent potential adverse outcomes from delayed treatment.
Question 112: A 42-year-old man presents with a 9-week history of fever up to 38.6°C, night sweats, and 8kg weight loss. He reports recent travel to Spain. Examination reveals hepatosplenomegaly. Blood tests show pancytopenia with Hb 102 g/L, WCC 3.1 × 10⁹/L, platelets 98 × 10⁹/L. Liver enzymes are mildly elevated. Blood cultures are negative. What is the most appropriate diagnostic test?
- A. Bone marrow aspirate with culture
- B. Abdominal CT with contrast
- C. Liver biopsy
- D. Serology for Brucella, Leishmania, and Q fever (Correct Answer)
- E. HIV test with CD4 count
Explanation: ***Serology for Brucella, Leishmania, and Q fever*** - This patient presents with a **fever of unknown origin (FUO)**, **hepatosplenomegaly**, and **pancytopenia** after traveling to Spain (a Mediterranean country), which are hallmark features of **Visceral Leishmaniasis (Kala-azar)** and **Brucellosis**, both endemic to the region. - **Serology** is the most appropriate initial, non-invasive diagnostic step to screen for these endemic zoonotic infections when standard blood cultures are negative. *Bone marrow aspirate with culture* - While bone marrow examination can be diagnostic for **Leishmaniasis** (showing **amastigotes** in macrophages) or **Brucellosis** (positive culture), it is an invasive procedure. - It is typically reserved for cases where non-invasive tests are inconclusive or if a hematological malignancy is strongly suspected, and not usually the first-line investigation for a suspected travel-related infection. *Abdominal CT with contrast* - This imaging modality would confirm **hepatosplenomegaly** and assess for lymphadenopathy or abscesses, but it does not provide a **microbiological diagnosis**. - It is useful for anatomical assessment but does not identify the etiology of the **pancytopenia** and systemic symptoms in this context. *Liver biopsy* - This is a highly invasive procedure that might reveal **granulomas** (in Brucella or Q fever) but is rarely the first step in diagnosing travel-related systemic infections. - The risk of complications like bleeding is elevated in this patient due to **thrombocytopenia** (platelets 98 x 10⁹/L). *HIV test with CD4 count* - While **HIV** should be considered in any patient presenting with **FUO** and weight loss, it does not specifically account for the recent travel to Spain or the pronounced **hepatosplenomegaly** and pancytopenia as directly as endemic zoonoses. - It is a standard screening test but is less likely to yield the primary diagnosis of the acute travel-related illness described here compared to targeted serology for suspected endemic infections.
Question 113: A 69-year-old man with osteoarthritis presents for review of his pain management. He takes paracetamol 1g QDS and ibuprofen 400mg TDS but continues to have significant pain (7/10) affecting his activities of daily living. He has a history of ischaemic heart disease with previous myocardial infarction 3 years ago. eGFR is 52 ml/min. What is the most appropriate modification to his analgesic regimen?
- A. Continue current regimen and add codeine 30mg QDS
- B. Stop ibuprofen and continue paracetamol alone (Correct Answer)
- C. Continue paracetamol and add topical NSAIDs
- D. Stop all current medications and start tramadol 50mg QDS
- E. Continue current regimen and add pregabalin 75mg BD
Explanation: ***Stop ibuprofen and continue paracetamol alone*** - Oral **NSAIDs** like ibuprofen are contraindicated in patients with **ischaemic heart disease** (post-MI) due to a significantly increased risk of further **cardiovascular events**. - This patient also has **chronic kidney disease (Stage 3a)** with an eGFR of 52 ml/min; NSAIDs can further deteriorate **renal function** by inhibiting prostaglandin-mediated afferent arteriolar vasodilation. *Continue current regimen and add codeine 30mg QDS* - Adding an opioid while maintaining oral ibuprofen is unsafe due to the pre-existing **cardiovascular** and **renal contraindications**. - Opioids should only be considered as a step-up therapy after potentially **harmful medications** have been removed from the regimen. *Continue paracetamol and add topical NSAIDs* - While **topical NSAIDs** are often preferred over oral NSAIDs due to lower systemic absorption, the priority in this clinical scenario is the immediate **cessation of the contraindicated oral ibuprofen**. - Use of topical NSAIDs may be an appropriate next step, but this option fails to explicitly address the removal of the high-risk **oral NSAID**. *Stop all current medications and start tramadol 50mg QDS* - Paracetamol is generally safe and should be continued as **first-line therapy**; there is no medical indication to stop it in this patient. - Starting **tramadol** (a strong opioid/SNRI-like analgesic) carries risks of **delirium**, falls, and addiction, especially in elderly patients, and should not be the first modification. *Continue current regimen and add pregabalin 75mg BD* - **Pregabalin** is indicated for **neuropathic pain**, but there is no evidence here of nerve involvement in the patient's osteoarthritis. - Continuing the current regimen ignores the hazardous **ibuprofen use** in a patient with a history of **myocardial infarction**.
Question 114: A 37-year-old woman presents with a 5-week history of daily fever peaking at 39.2°C, occurring mainly in the late afternoon. She reports a salmon-pink rash that appears with the fever then disappears. She has severe arthralgia affecting wrists, knees, and ankles. Blood tests show: WCC 16.5 × 10⁹/L (neutrophils 13.2), CRP 145 mg/L, ferritin 4800 μg/L. ANA, RF, and blood cultures are negative. What is the most likely diagnosis?
- A. Systemic lupus erythematosus
- B. Adult-onset Still's disease (Correct Answer)
- C. Infectious mononucleosis
- D. Acute rheumatic fever
- E. Septic arthritis with bacteraemia
Explanation: ***Adult-onset Still's disease***- This patient presents with the classic triad of **Adult-onset Still's disease (AOSD)**: a **quotidian fever** peaking in the late afternoon, an **evanescent salmon-pink rash** that appears with the fever spikes, and polyarthralgia affecting wrists, knees, and ankles.- Laboratory findings of **markedly elevated ferritin** (4800 μg/L, typically >1000 ng/mL), **neutrophilic leukocytosis** (WCC 16.5 × 10⁹/L, neutrophils 13.2), and negative **ANA** and **RF** are highly characteristic diagnostic markers.*Systemic lupus erythematosus*- While **Systemic lupus erythematosus (SLE)** can cause fever, arthralgia, and rash, it is usually associated with **positive ANA** and often anti-dsDNA antibodies, which are absent here.- The **evanescent** nature of this rash and the extreme level of **hyperferritinemia** are much more suggestive of AOSD than lupus.*Infectious mononucleosis*- **Infectious mononucleosis** typically presents with **lymphadenopathy**, **sore throat**, and **atypical lymphocytosis** rather than the neutrophilia observed.- The fever and rash in EBV infection do not follow the specific **quotidian pattern** or associated with such high inflammatory markers, particularly ferritin, seen in this case.*Acute rheumatic fever*- **Acute rheumatic fever** typically presents following a **Group A streptococcal pharyngitis** and is characterized by migratory polyarthritis and **erythema marginatum**, a different rash.- It is diagnosed using the **Jones criteria**, and it would not account for the extreme **ferritin** elevation or the specific salmon-pink evanescent rash described.*Septic arthritis with bacteraemia*- **Septic arthritis** usually presents as an acute **monoarthritis** with high-grade fever and would typically yield **positive blood cultures** if bacteraemia is present.- This patient's **symmetrical arthralgia** and negative blood cultures, combined with the specific multisystem nature of the symptoms including the rash and extreme hyperferritinemia, point away from a primary bacterial infection.
Question 115: A 53-year-old woman presents with a 7-week history of profound fatigue, difficulty concentrating, and feeling cold. She has gained 3kg despite reduced appetite. Blood tests show: TSH 0.05 mU/L (normal 0.5-5.0), free T4 32 pmol/L (normal 10-22), free T3 8.2 pmol/L (normal 3.5-6.5). Heart rate is 96 bpm regular. What is the most likely explanation for this clinical picture?
- A. Graves' disease with atypical presentation
- B. TSH-secreting pituitary adenoma (Correct Answer)
- C. Subclinical hyperthyroidism
- D. Thyroid hormone resistance syndrome
- E. Assay interference causing spurious results
Explanation: ***TSH-secreting pituitary adenoma*** - This diagnosis explains the paradoxical presentation of **biochemical hyperthyroidism** (elevated **free T4** and **free T3**) alongside symptoms traditionally associated with a **hypothyroid state** (fatigue, cold, weight gain), while also having a slightly elevated heart rate. - Although TSH-secreting adenomas typically show inappropriately normal or elevated TSH, the autonomous secretion of TSH drives thyroid hormone production. In rare cases, TSH values can fluctuate or be difficult to interpret, even appearing low in certain contexts of secondary hyperthyroidism. *Graves' disease with atypical presentation* - Graves' disease would explain the **suppressed TSH** and elevated thyroid hormones (primary hyperthyroidism). - However, the patient's predominant symptoms of **cold intolerance**, **weight gain**, and profound fatigue are highly atypical, as classic Graves' presents with hypermetabolic symptoms like heat intolerance and weight loss. *Subclinical hyperthyroidism* - Subclinical hyperthyroidism is characterized by a **suppressed TSH** but **normal free T4 and free T3 levels**. - This patient has significantly **elevated free T4 and free T3**, which rules out subclinical hyperthyroidism. *Thyroid hormone resistance syndrome* - This syndrome presents with elevated T3 and T4 but an **inappropriately normal or elevated TSH**, due to peripheral tissue resistance to thyroid hormones. - The patient's **suppressed TSH** (0.05 mU/L) does not fit the diagnostic criteria for thyroid hormone resistance syndrome. *Assay interference causing spurious results* - **Assay interference**, such as from **biotin supplementation**, can cause misleading results (e.g., falsely low TSH, falsely high free T4/T3) which could explain the biochemical-clinical discordance. - However, a **TSH-secreting pituitary adenoma** offers a direct pathophysiological explanation for sustained secondary hyperthyroidism that encompasses both hormonal elevations and varied clinical manifestations.
Question 116: A 60-year-old man with COPD presents with a 6-week history of worsening fatigue, reduced appetite, and 5kg weight loss. He reports increasing breathlessness but no chest pain. He is a current smoker (40 pack-years). Examination reveals reduced breath sounds and dullness to percussion at the right base. Oxygen saturations are 93% on air. What is the single most important investigation to arrange?
- A. Chest X-ray (Correct Answer)
- B. CT pulmonary angiography
- C. Spirometry
- D. Full blood count and CRP
- E. Sputum culture
Explanation: ***Chest X-ray***- A **chest X-ray** is the essential first-line investigation in any patient over 40 with a significant **smoking history** presenting with **red flag symptoms** like weight loss, fatigue, and persistent breathlessness, strongly suggesting potential malignancy.- It is highly effective for identifying structural abnormalities such as a **lung mass**, **pleural effusion**, or **atelectasis**, directly addressing the physical findings of **dullness to percussion** and reduced breath sounds at the right base.*CT pulmonary angiography*- **CT pulmonary angiography (CTPA)** is the gold standard for diagnosing **pulmonary embolism**, but the patient's presentation (insidious onset, constitutional symptoms) is not typical for an acute PE.- The absence of classic PE symptoms like **acute pleuritic chest pain** or **hemoptysis**, along with the presence of **red flag symptoms** for malignancy, makes a general structural assessment (CXR) more important initially.*Spirometry*- While useful for diagnosing and monitoring **COPD**, spirometry cannot identify the underlying cause of **constitutional symptoms** like weight loss or localized findings such as **dullness to percussion**.- Performing spirometry would delay the urgent investigation needed for a suspected **malignancy** or **pleural effusion** in a high-risk patient with new, concerning symptoms.*Full blood count and CRP*- **Full blood count (FBC)** and **C-reactive protein (CRP)** are non-specific tests that can indicate **inflammation** or **anemia** but cannot identify the specific structural pathology suggested by the examination findings.- Relying on these tests would delay crucial **imaging** to investigate the underlying cause of **dullness to percussion** and **weight loss**, which could be a malignancy.*Sputum culture*- **Sputum culture** is primarily indicated for diagnosing **bacterial infections** like pneumonia or tuberculosis, especially with purulent sputum or fever.- The patient's **insidious weight loss** and localized **dullness** suggest a more serious underlying structural issue than a simple infection, making imaging a more appropriate initial step to rule out malignancy or significant effusion.
Question 117: A 44-year-old woman presents with a 12-week history of severe fatigue and widespread pain affecting her neck, back, arms, and legs. She describes the pain as constant, aching, and rated 7/10 in severity. She reports poor sleep, waking frequently, and feeling unrefreshed. Examination reveals tenderness over multiple areas but no joint swelling or objective weakness. Blood tests including FBC, CRP, ESR, TFTs, and calcium are all normal. Using the WHO analgesic ladder, what is the most appropriate initial management approach?
- A. Paracetamol 1g QDS regularly and commence amitriptyline 10mg nocte (Correct Answer)
- B. Codeine 30-60mg QDS and refer to pain clinic
- C. Ibuprofen 400mg TDS with omeprazole cover
- D. Tramadol 50mg QDS and arrange urgent rheumatology referral
- E. Morphine sulfate modified release 10mg BD and prescribe laxatives
Explanation: ***Paracetamol 1g QDS regularly and commence amitriptyline 10mg nocte*** - The patient presents with **fibromyalgia**, suggested by chronic widespread pain, fatigue, poor sleep, and **normal inflammatory markers** (ESR/CRP). - **Amitriptyline** is a first-line pharmacological treatment that addresses both the **central sensitization** of pain and the **non-restorative sleep** patterns characteristic of the condition. *Codeine 30-60mg QDS and refer to pain clinic* - **Codeine** is a weak opioid; clinical guidelines generally **recommend against** the use of opioids for fibromyalgia due to lack of long-term efficacy and risk of addiction. - Referral to a pain clinic is usually reserved for complex cases that have failed **primary care management** and multidisciplinary approaches. *Ibuprofen 400mg TDS with omeprazole cover* - **NSAIDs** like ibuprofen are typically ineffective for fibromyalgia as the condition is characterized by **central pain processing** issues rather than peripheral inflammation. - While useful for inflammatory arthritis, they do not address the **sleep disturbances** or fatigue associated with this patient's presentation. *Tramadol 50mg QDS and arrange urgent rheumatology referral* - **Tramadol** has some evidence in fibromyalgia but is not the preferred initial step due to potential side effects and **dependency risks**. - An **urgent rheumatology referral** is not indicated as there are no "red flags" or objective signs of inflammatory systemic disease (e.g., joint swelling, abnormal labs). *Morphine sulfate modified release 10mg BD and prescribe laxatives* - **Strong opioids** like morphine are explicitly discouraged for chronic primary pain conditions like fibromyalgia because they can cause **opioid-induced hyperalgesia**. - NICE guidelines suggest that long-term opioid use for such conditions provides **no functional benefit** and carries significant risks of harm.
Question 118: A 57-year-old woman presents with a 9-week history of intermittent fever (38.2-38.8°C), night sweats, and a 7kg weight loss. She recently returned from volunteering in rural India 4 months ago. Examination reveals enlarged cervical lymph nodes (2cm, rubbery, non-tender). Chest X-ray shows bilateral hilar lymphadenopathy. Mantoux test shows 18mm induration at 72 hours. What is the most appropriate next step in management?
- A. Arrange lymph node biopsy (Correct Answer)
- B. Start anti-tuberculosis therapy immediately
- C. Request interferon-gamma release assay (IGRA)
- D. Arrange CT chest for further characterisation
- E. Obtain three sputum samples for acid-fast bacilli
Explanation: ***Arrange lymph node biopsy*** - This patient presents with **constitutional symptoms** (fever, night sweats, weight loss), **lymphadenopathy** (cervical and hilar), a travel history to an **endemic area** (rural India), and a **positive Mantoux test**. A **tissue diagnosis** is crucial to definitively differentiate between conditions like **Tuberculosis (TB)**, **lymphoma**, or **sarcoidosis**. - Biopsy allows for both **histological examination** (looking for caseating granulomas) and **microbiological culture** for acid-fast bacilli, which are essential for definitive diagnosis and targeted treatment, especially given the accessible **cervical lymph nodes**. *Start anti-tuberculosis therapy immediately* - While tuberculosis is a strong possibility, empirical treatment without **histological or microbiological confirmation** is generally discouraged unless the patient is critically ill, due to the significant **side effects of anti-TB drugs**. - Starting therapy prematurely risks delaying the diagnosis and appropriate treatment of alternative conditions such as **lymphoma** or **sarcoidosis**, if the patient's symptoms are not due to TB. *Request interferon-gamma release assay (IGRA)* - The patient already has a strongly positive **Mantoux test (18mm)**, which, like an IGRA, indicates exposure to *Mycobacterium tuberculosis* but does not reliably distinguish between **latent TB infection** and **active disease**. - An IGRA would provide overlapping information and would not offer the definitive **histological or microbiological proof** required to confirm active TB or rule out other causes of lymphadenopathy. *Arrange CT chest for further characterisation* - While a CT scan would provide more detailed imaging of the **bilateral hilar lymphadenopathy** and lung parenchyma, it is a **radiological investigation** and cannot provide a **definitive pathological diagnosis**. - Given the presence of readily accessible **cervical lymph nodes**, a biopsy is a more direct and higher-yield diagnostic step than relying solely on imaging, which cannot differentiate between various causes of lymphadenopathy. *Obtain three sputum samples for acid-fast bacilli* - Sputum samples are primarily useful for diagnosing **pulmonary tuberculosis**, especially in cases with active parenchymal lung disease, and for assessing infectivity. - In this case of prominent **extrapulmonary lymphadenopathy** without clear evidence of active pulmonary disease on chest X-ray, the diagnostic yield from sputum samples for acid-fast bacilli is likely to be low compared to a biopsy of the affected lymph nodes.
Question 119: According to current guidance for primary care assessment of unexplained weight loss in adults, which of the following defines clinically significant unintentional weight loss requiring investigation?
- A. Loss of 3% of body weight over 3 months
- B. Loss of 5% of body weight over 6-12 months (Correct Answer)
- C. Loss of 7% of body weight over 12 months
- D. Loss of 10% of body weight over any time period
- E. Any weight loss accompanied by other symptoms
Explanation: ***Loss of 5% of body weight over 6-12 months*** - This is the widely accepted **clinical threshold** for **unexplained weight loss** in adults, triggering investigation for potential underlying pathologies like **malignancy**, **chronic infections**, or endocrine disorders. - A 5% loss over this period is considered significant enough to warrant a workup, distinguishing it from normal weight fluctuations or minor short-term changes. *Loss of 3% of body weight over 3 months* - While a 3% loss may be noted, it typically falls below the **established threshold** for defining clinically significant weight loss requiring extensive investigation in primary care. - This smaller percentage over a shorter period is more prone to **normal physiological variations** and may not indicate serious underlying pathology. *Loss of 7% of body weight over 12 months* - Setting the threshold at 7% over 12 months is **too high** and could potentially delay the diagnosis of serious conditions, as a **5% loss** is generally considered sufficient to prompt earlier investigation. - The standard guidelines aim for a more sensitive detection point to catch diseases earlier, making 7% a less optimal primary screening criterion. *Loss of 10% of body weight over any time period* - A 10% weight loss is indeed significant, but the lack of a defined **time frame** makes this criterion less precise for primary care screening. - Guidelines emphasize the rate of loss (e.g., over 6-12 months) as crucial for differentiating between acute, concerning pathology and slower, less urgent changes. *Any weight loss accompanied by other symptoms* - While other symptoms often accompany significant weight loss and are important for a comprehensive assessment, the definition of **clinically significant weight loss** itself relies on objective percentage and time criteria. - This option is too **broad and subjective** as a standalone definition for initiating a focused investigation based solely on unexplained weight loss.
Question 120: A 49-year-old woman presents with a 14-week history of fatigue and a 6kg weight loss. She describes generalised muscle aches and reports that her urine has been darker than usual. Examination reveals mild jaundice and hepatomegaly of 3cm below the costal margin. Blood tests show: bilirubin 45 μmol/L, ALT 450 U/L, ALP 180 U/L, albumin 38 g/L. What is the most likely diagnosis?
- A. Primary biliary cholangitis
- B. Autoimmune hepatitis (Correct Answer)
- C. Hepatitis C infection
- D. Non-alcoholic steatohepatitis
- E. Haemochromatosis
Explanation: ***Autoimmune hepatitis*** - This patient presents with a **hepatitic pattern** of liver injury, characterized by a significantly elevated **ALT (450 U/L)** compared to a modest rise in **ALP**, common in middle-aged women. - The insidious onset of **fatigue**, **weight loss**, **jaundice**, and **muscle aches** combined with **hepatomegaly** is highly suggestive of this autoimmune process. *Primary biliary cholangitis* - This condition typically presents with a **cholestatic pattern**, where the **ALP** would be significantly more elevated than the transaminases. - It is frequently associated with **pruritus** and the presence of **anti-mitochondrial antibodies (AMA)**, which differ from the hepatocellular injury seen here. *Hepatitis C infection* - While it can cause chronic hepatitis, it often remains **asymptomatic** for years and rarely presents with such a sharp, subacute rise in ALT without specific risk factors. - Diagnosis would require a positive **HCV antibody** or **RNA test**, and the clinical picture in a middle-aged woman more strongly favors an autoimmune etiology. *Non-alcoholic steatohepatitis* - This typically presents with mild elevations in transaminases and is often associated with **metabolic syndrome**, obesity, or **type 2 diabetes**. - It rarely causes a 10-fold increase in **ALT** or significant **weight loss**; rather, it is usually an incidental finding on routine bloods. *Haemochromatosis* - This is a chronic iron overload disorder that usually presents with much more gradual symptoms like **arthralgia** or **skin bronzing**. - Liver tests generally show mild abnormalities rather than the acute **hepatitic rise** in ALT and bilirubin seen in this case.
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