UPSC-CMS 2021 — Internal Medicine
10 Previous Year Questions with Answers & Explanations
A 50 year old female presents to the emergency with pain, swelling and redness over the left foot following a trivial trauma 3 days back. On examination, the swelling over the left foot is poorly localised; local tenderness and erythema are present and crepitus is absent; distal pulsations are palpable. The most likely clinical diagnosis is
Serum thyroglobulin level is an important tumor marker for
Which of the following statements regarding Ogilvie’s syndrome are correct? 1. It presents as acute large bowel mechanical obstruction 2. Marked caecal dilatation is a common feature on X-ray abdomen 3. Caecal perforation is a well recognized complication of this condition 4. Intravenous Neostigmine is used for the treatment of this condition
A 50 year old male patient presents to the emergency with sudden onset of upper abdominal pain, nausea, vomiting and haematemesis. On examination, PR = 106/min, BP = 100/70 mm Hg and pallor is present. CECT abdomen reveals a large exophytic tumor of size 13 x 8 cm at the fundus of the stomach. On upper GI endoscopy, the mucosa overlying the tumor is intact. The staining for CD117 in the upper GI endoscopic biopsy is positive. The most probable clinical diagnosis in this patient is
Among the extra intestinal manifestations of Crohn’s disease which one of the following is related to the disease activity ?
The Model for End Stage Liver Disease (MELD) score includes which of the following variables? 1. Serum bilirubin 2. Serum albumin 3. Serum creatinine 4. International Normalised Ratio (INR)
Which of the following statements with regard to Enteric perforation are correct? 1. Salmonella typhi is the causative organism for Enteric fever 2. Enteric perforation characteristically occurs during the third week of illness 3. Typhoid ulcers are placed transversely to the long axis of the gut 4. Terminal ileum is the most common site for enteric perforation
Which of the following are causes of GnRH dependent precocious puberty? 1. Constitutional 2. Tubercular Encephalitis 3. McCune-Albright syndrome 4. Primary hypothyroidism
Insulin Resistance Syndrome (Syndrome X) is associated with which of the following? 1. Type 2 Diabetes Mellitus 2. Hyperinsulinaemia 3. Dyslipidaemia 4. Hypercalcaemia
The "DASH diet" is a lifestyle modification for management of which of these conditions ?
UPSC-CMS 2021 - Internal Medicine UPSC-CMS Practice Questions and MCQs
Question 1: A 50 year old female presents to the emergency with pain, swelling and redness over the left foot following a trivial trauma 3 days back. On examination, the swelling over the left foot is poorly localised; local tenderness and erythema are present and crepitus is absent; distal pulsations are palpable. The most likely clinical diagnosis is
- A. Abscess
- B. Fasciitis
- C. Compartment syndrome
- D. Cellulitis (Correct Answer)
Explanation: **Cellulitis** - The clinical presentation of **pain, swelling, redness, poorly localized swelling**, and local tenderness following a minor trauma strongly suggests **cellulitis** [1]. - The absence of crepitus and presence of palpable distal pulses argue against severe infections like necrotizing fasciitis or compartment syndrome. *Abscess* - An abscess typically presents as a **localized, fluctuant** collection of pus, distinct from the poorly localized swelling described. - While an abscess can cause pain, swelling, and redness, its **well-demarcated nature** would differentiate it from the diffuse presentation of cellulitis [1]. *Fasciitis* - **Necrotizing fasciitis** is characterized by severe pain out of proportion to examination findings, rapid progression, systemic toxicity, and often **crepitus** due to gas production by bacteria. - The description lacks signs of overwhelming infection and crepitus, making fasciitis less likely. *Compartment syndrome* - Compartment syndrome involves severe pain, **pallor, paresthesia, pulselessness**, and paralysis (the 5 Ps), caused by increased pressure within a fascial compartment. - The presence of **palpable distal pulsations** makes compartment syndrome highly unlikely, as it typically impairs blood flow.
Question 2: Serum thyroglobulin level is an important tumor marker for
- A. Thyroid lymphoma
- B. Medullary carcinoma thyroid
- C. Papillary carcinoma thyroid (Correct Answer)
- D. Anaplastic carcinoma thyroid
Explanation: ***Papillary carcinoma thyroid*** - **Serum thyroglobulin** is produced by follicular cells of the thyroid and serves as an excellent tumor marker for **differentiated thyroid cancers**, including papillary carcinoma, particularly after thyroidectomy [1]. - Elevated thyroglobulin levels in a patient with a history of papillary thyroid cancer, especially after removal of the thyroid gland, suggest **recurrence or persistent disease**. *Thyroid lymphoma* - **Thyroid lymphoma** is a lymphoid malignancy, and its primary tumor marker is typically associated with lymphocytic origin, such as **beta-2 microglobulin** or **LDH**, not thyroglobulin. - Thyroglobulin is a product of thyroid follicular cells, which are not the cell of origin for lymphoma. *Medullary carcinoma thyroid* - **Medullary thyroid carcinoma** originates from the parafollicular C cells, which produce **calcitonin**. - **Calcitonin** is the primary tumor marker for medullary thyroid carcinoma, not thyroglobulin. *Anaplastic carcinoma thyroid* - **Anaplastic thyroid carcinoma** is an undifferentiated tumor with very aggressive behavior and often does not produce significant amounts of thyroglobulin. - While some anaplastic carcinomas may have elevated thyroglobulin, it's not a reliable or specific marker due to the **dedifferentiated nature** of the cells.
Question 3: Which of the following statements regarding Ogilvie’s syndrome are correct? 1. It presents as acute large bowel mechanical obstruction 2. Marked caecal dilatation is a common feature on X-ray abdomen 3. Caecal perforation is a well recognized complication of this condition 4. Intravenous Neostigmine is used for the treatment of this condition
- A. 1, 3 and 4
- B. 1, 2 and 3
- C. 1, 2 and 4
- D. 2, 3 and 4 (Correct Answer)
Explanation: **2, 3 and 4** - **Marked caecal dilatation** is a hallmark of Ogilvie's syndrome on X-ray, indicating the pseudo-obstruction. - **Caecal perforation** is a serious and well-recognized complication, especially if the caecal diameter exceeds 12-14 cm. - **Intravenous Neostigmine** is a parasympathomimetic drug used to stimulate colonic motility and is an effective treatment for Ogilvie's syndrome. *1, 3 and 4* - Ogilvie's syndrome is characterized by **acute large bowel pseudo-obstruction**, meaning it mimics a mechanical obstruction without an actual physical blockage. - Therefore, statement 1, which claims it presents as acute large bowel *mechanical* obstruction, is incorrect. *1, 2 and 3* - As noted, Ogilvie's syndrome is a **pseudo-obstruction**, not a mechanical one, making statement 1 incorrect. - The other statements regarding caecal dilatation and perforation are correct. *1, 2 and 4* - Again, the key differentiating factor is that Ogilvie's syndrome is a **pseudo-obstruction**, not a mechanical obstruction, rendering statement 1 inaccurate. - Statements 2 and 4 are accurate descriptions of the condition and its treatment.
Question 4: A 50 year old male patient presents to the emergency with sudden onset of upper abdominal pain, nausea, vomiting and haematemesis. On examination, PR = 106/min, BP = 100/70 mm Hg and pallor is present. CECT abdomen reveals a large exophytic tumor of size 13 x 8 cm at the fundus of the stomach. On upper GI endoscopy, the mucosa overlying the tumor is intact. The staining for CD117 in the upper GI endoscopic biopsy is positive. The most probable clinical diagnosis in this patient is
- A. Carcinoid tumor
- B. Gastric lymphoma
- C. Carcinoma stomach
- D. Gastrointestinal stromal tumor (Correct Answer)
Explanation: ***Gastrointestinal stromal tumor*** - The rapid onset of symptoms like **upper abdominal pain**, **nausea**, **vomiting**, and **hematemesis**, along with signs of **hypovolemia** (tachycardia, hypotension, pallor), suggests acute gastrointestinal bleeding from a tumor [1]. - A **large exophytic tumor** in the stomach fundus with **intact overlying mucosa** on endoscopy points to a **submucosal lesion**, and **positive CD117 (c-Kit)** staining is a hallmark diagnostic feature of GISTs. *Carcinoid tumor* - While carcinoid tumors can occur in the gastrointestinal tract, they are typically **neuroendocrine tumors** and less commonly present as large, exophytic masses causing acute massive bleeding with the same frequency as GISTs. - Carcinoid tumors typically stain positive for **chromogranin A** and **synaptophysin**, not CD117. *Gastric lymphoma* - Gastric lymphoma commonly presents with **ulcerations** or infiltrative lesions of the gastric wall, which would typically cause mucosal disruption on endoscopy [2]. - Lymphomas are characterized by lymphoid markers like **CD20** or **CD3**, and not CD117 [2]. *Carcinoma stomach* - **Gastric carcinoma** often presents with **mucosal irregularities**, **ulcerations**, or **masses** that arise directly from the gastric epithelium, which would be visible on endoscopy as an invasive lesion [3]. - Gastric carcinomas are typically epithelial in origin and would not stain positive for **CD117**.
Question 5: Among the extra intestinal manifestations of Crohn’s disease which one of the following is related to the disease activity ?
- A. Eye complications (Iritis/Uveitis) (Correct Answer)
- B. Primary sclerosing cholangitis
- C. Renal calculi
- D. Chronic active hepatitis
Explanation: ***Eye complications (Iritis/Uveitis)*** - **Uveitis and iritis** in Crohn's disease often correlate with disease activity, meaning flares in the bowel disease can trigger or worsen these ocular manifestations [1]. - Successful treatment of the underlying intestinal inflammation frequently leads to improvement or resolution of these **eye complications** [1]. *Primary sclerosing cholangitis* - **Primary sclerosing cholangitis (PSC)** is a chronic liver disease associated with inflammatory bowel disease, particularly ulcerative colitis, but its course is largely **independent of IBD activity**. - It progresses irrespective of intestinal disease flares and often requires its **own specific management**. *Renal calculi* - **Renal calculi (kidney stones)** can be a complication of Crohn's disease, linked to fluid loss and changes in oxalate absorption, but their occurrence is generally **not directly correlated with the inflammatory activity** of the bowel disease. - Instead, factors like **dehydration** and calcium/oxalate metabolism are more significant drivers. *Chronic active hepatitis* - While various hepatic manifestations can occur in Crohn's disease, **chronic active hepatitis** is not one of the well-established extraintestinal manifestations directly linked to disease activity. - Other liver conditions like **fatty liver disease** or **drug-induced liver injury** are more commonly seen, but their presence doesn't typically parallel intestinal inflammation.
Question 6: The Model for End Stage Liver Disease (MELD) score includes which of the following variables? 1. Serum bilirubin 2. Serum albumin 3. Serum creatinine 4. International Normalised Ratio (INR)
- A. 1, 2 and 4
- B. 2, 3 and 4
- C. 1, 2 and 3
- D. 1, 3 and 4 (Correct Answer)
Explanation: ***1, 3 and 4*** - The **MELD score** calculates a patient's risk of death due to **end-stage liver disease** using **serum bilirubin**, **serum creatinine**, and **INR** [1]. - These variables reflect important aspects of **liver function** (bilirubin and INR) and **renal function** (creatinine), which is often compromised in advanced liver disease [1]. *1, 2 and 4* - This option correctly includes **serum bilirubin** and **INR** but incorrectly includes **serum albumin** as a component of the MELD score. - While **albumin** is a measure of **liver synthetic function** and is used in the **Child-Pugh score**, it is not part of the MELD calculation [1]. *2, 3 and 4* - This option incorrectly includes **serum albumin** and omits **serum bilirubin**, which are critical components of the MELD score. - **Serum bilirubin** is a direct indicator of the liver's ability to process and excrete bile. *1, 2 and 3* - This option includes **serum albumin** while omitting **INR**, a crucial indicator of the liver's **synthetic function** and its ability to produce clotting factors. - The **INR** directly reflects the liver's capacity to synthesize **coagulation proteins**.
Question 7: Which of the following statements with regard to Enteric perforation are correct? 1. Salmonella typhi is the causative organism for Enteric fever 2. Enteric perforation characteristically occurs during the third week of illness 3. Typhoid ulcers are placed transversely to the long axis of the gut 4. Terminal ileum is the most common site for enteric perforation
- A. 2, 3 and 4
- B. 1, 2 and 4 (Correct Answer)
- C. 1, 3 and 4
- D. 1, 2 and 3
Explanation: ***1, 2 and 4*** * **Salmonella typhi** is indeed the causative organism for **enteric fever**, often known as typhoid fever. * **Enteric perforation** characteristically occurs during the **third week of illness** due to progressive ulceration of **Peyer's patches** [1]. * The **terminal ileum** is the **most common site** for enteric perforation because it has the highest concentration of **Peyer's patches**, which are target sites for Salmonella typhi [1]. *2, 3 and 4* * While enteric perforation typically occurs in the third week and the terminal ileum is the most common site, the statement about **typhoid ulcers** being placed transversely is incorrect. * **Typhoid ulcers** are characteristically oriented **longitudinally** along the long axis of the gut, following the orientation of the underlying Peyer's patches [1]. *1, 3 and 4* * Although Salmonella typhi is the causative organism and the terminal ileum is the most common site, the statement about **typhoid ulcers** being placed **transversely** is incorrect. * Perforation typically occurs during the **third week of illness**, which is an important clinical detail missed in this option [1]. *1, 2 and 3* * **Salmonella typhi** is the causative organism for enteric fever, and perforation does occur during the **third week of illness** [1]. * However, the statement that **typhoid ulcers** are placed **transversely** is incorrect; they are **longitudinal** in orientation.
Question 8: Which of the following are causes of GnRH dependent precocious puberty? 1. Constitutional 2. Tubercular Encephalitis 3. McCune-Albright syndrome 4. Primary hypothyroidism
- A. 1 and 2 only
- B. 1, 2 and 3 (Correct Answer)
- C. 2, 3 and 4
- D. 1, 3 and 4
Explanation: ***1, 2 and 3*** - **Constitutional precocious puberty** is the most common form of central (GnRH-dependent) precocious puberty, where the hypothalamic-pituitary-gonadal axis matures prematurely without an underlying organic cause [1]. - **Tubercular encephalitis** can cause CNS lesions that stimulate the hypothalamus, leading to premature GnRH release and subsequent central precocious puberty [1]. - **McCune-Albright syndrome** is primarily associated with GnRH-independent precocious puberty, but in a small percentage of cases, chronic stimulation of the ovaries (due to activating GNAS mutations) can eventually lead to secondary central (GnRH-dependent) precocious puberty via an exhausted feedback mechanism. *1 and 2 only* - This option is incorrect because while constitutional precocious puberty and tubercular encephalitis are causes of GnRH-dependent precocious puberty, McCune-Albright syndrome can also lead to GnRH-dependent precocious puberty secondarily. - It omits a valid cause, making it an incomplete answer. *2, 3 and 4* - This option incorrectly includes **primary hypothyroidism** as a cause of GnRH-dependent precocious puberty. Primary hypothyroidism is associated with GnRH-independent (peripheral) precocious puberty due to elevated TSH cross-reacting with FSH receptors. - It also omits **constitutional precocious puberty**, which is the most common cause of GnRH-dependent precocious puberty [1]. *1, 3 and 4* - This option incorrectly includes **primary hypothyroidism** as a cause of GnRH-dependent precocious puberty; it is a cause of GnRH-independent precocity. - While constitutional precocious puberty is a correct inclusion, the presence of primary hypothyroidism makes this option incorrect for GnRH-dependent causes.
Question 9: Insulin Resistance Syndrome (Syndrome X) is associated with which of the following? 1. Type 2 Diabetes Mellitus 2. Hyperinsulinaemia 3. Dyslipidaemia 4. Hypercalcaemia
- A. 1, 3 and 4
- B. 1, 2 and 3 (Correct Answer)
- C. 2, 3 and 4
- D. 1, 2 and 4
Explanation: ***1, 2 and 3*** - **Insulin Resistance Syndrome** (metabolic syndrome) is characterized by a cluster of conditions including **insulin resistance**, **type 2 diabetes mellitus**, **hyperinsulinemia**, and **dyslipidemia** [1], [2]. - **Hyperinsulinemia** results from the pancreas overproducing insulin to compensate for tissue insensitivity, and **dyslipidemia** (abnormal lipid levels) is a common component [1]. *1, 3 and 4* - This option correctly identifies **type 2 diabetes mellitus** and **dyslipidemia** as components of insulin resistance syndrome but incorrectly includes **hypercalcemia**. - **Hypercalcemia** (high calcium levels) is not a defining feature or direct consequence of insulin resistance syndrome. *2, 3 and 4* - This option includes **hyperinsulinemia** and **dyslipidemia**, which are core features, but incorrectly includes **hypercalcemia**. - It also omits **type 2 diabetes mellitus**, which is a significant clinical manifestation of prolonged insulin resistance [1]. *1, 2 and 4* - This option correctly identifies **type 2 diabetes mellitus** and **hyperinsulinemia** as associated conditions but incorrectly includes **hypercalcemia**. - This option omits **dyslipidemia**, which is a very common and important component of the metabolic syndrome, contributing to cardiovascular risk.
Question 10: The "DASH diet" is a lifestyle modification for management of which of these conditions ?
- A. Hypertension (Correct Answer)
- B. Diabetes
- C. Cancer
- D. Anemia
Explanation: ***Hypertension*** - The **DASH (Dietary Approaches to Stop Hypertension) diet** was specifically developed and promoted to lower **blood pressure**. [1] - It emphasizes foods rich in **potassium, calcium, and magnesium**, and low in sodium, saturated fat, and cholesterol. [1] *Diabetes* - While a healthy diet is crucial for **diabetes management**, the DASH diet is primarily designed for blood pressure control, though it can benefit individuals with diabetes due to its overall healthy composition. - The primary dietary focus for diabetes is on **carbohydrate control** and glycemic index management. *Cancer* - While a healthy diet can reduce **cancer risk**, the DASH diet is not specifically tailored as a cancer management or prevention strategy. - Cancer prevention diets often highlight **antioxidants** and avoidance of processed foods, which overlap but are not identical to DASH principles. *Anemia* - **Anemia** is typically managed by addressing nutrient deficiencies, most commonly **iron**, or underlying medical conditions. - The DASH diet does not primarily focus on increasing **iron absorption** or other nutrients critical for anemia.