Clinical Manifestations and Presentation of Diseases — MCQs

Clinical Manifestations and Presentation of Diseases Indian Medical PG Practice Questions and MCQs

Question 231: A 45-year-old man presents with hoarseness of voice and difficulty in breathing. Examination reveals a lesion affecting the left recurrent laryngeal nerve. What is the most likely diagnosis?

A. Vocal cord polyp
B. Reinke's edema
C. Thyroid nodule (Correct Answer)
D. Laryngeal carcinoma

Explanation: ***Thyroid nodule*** - A lesion affecting the **left recurrent laryngeal nerve** can cause **hoarseness of voice** and **difficulty in breathing** due to vocal cord paralysis. - An enlarged **thyroid nodule** or **thyroid cancer** can compress this nerve which anatomically loops around the subclavian artery on the right side and the aortic arch on the left side, then ascends to the larynx. *Vocal cord polyp* - While a vocal cord polyp can cause **hoarseness**, it typically does not cause **difficulty in breathing** to the extent that it implies recurrent laryngeal nerve involvement. - Polyps are usually benign growths on the vocal folds themselves, often caused by **voice misuse**. *Reinke's edema* - Reinke's edema is characterized by swollen, gelatinous vocal folds due to **fluid accumulation** from chronic irritation, most commonly **smoking**. - It primarily causes a **low-pitched hoarseness** but typically does not involve recurrent laryngeal nerve paralysis or significant airway obstruction. *Laryngeal carcinoma* - A laryngeal carcinoma can certainly cause hoarseness and even dyspnea, but the phrasing "lesion affecting the left recurrent laryngeal nerve" points more specifically to an extrinsic mass compressing or invading the nerve. - While it's a possibility, a **thyroid mass** is a classic cause of isolated recurrent laryngeal nerve palsy in this context given the nerve's anatomical course.

Question 232: A 35-year-old male presents with nasal obstruction, rhinorrhea, and sneezing. Examination reveals pale, edematous nasal mucosa. What is the most likely diagnosis?

A. Acute rhinitis
B. Allergic rhinitis (Correct Answer)
C. Vasomotor rhinitis
D. Nasal polyp

Explanation: ***Allergic rhinitis*** - The combination of **nasal obstruction**, **rhinorrhea**, **sneezing**, and importantly, **pale, edematous nasal mucosa**, strongly suggests allergic rhinitis. - This presentation is typical of an **IgE-mediated hypersensitivity reaction** to inhaled allergens. *Acute rhinitis* - Often caused by a **viral infection**, leading to symptoms like rhinorrhea, sneezing, and nasal obstruction. - However, the nasal mucosa in acute rhinitis is typically **erythematous** (red and inflamed), not pale and edematous. *Vasomotor rhinitis* - Characterized by chronic rhinitis symptoms that are **non-allergic** and non-infectious, often triggered by environmental changes like temperature or strong odors. - While it can cause similar symptoms, the nasal mucosa is usually **normal in appearance** or mildly congested without the distinct pallor and edema seen in allergic rhinitis. *Nasal polyp* - Presents primarily with **nasal obstruction** and possibly anosmia (loss of smell) and postnasal drip. - While chronic inflammation may be present, the classic mucosal appearance of **pale, edematous tissue** throughout the nasal cavity, as described, is not the primary feature of a localized nasal polyp.

Question 233: A 30-year-old woman presents with a painful breast lump that has increased in size over the past two weeks. She also reports fever and malaise. What is the most likely diagnosis?

A. Breast abscess (Correct Answer)
B. Fibroadenoma
C. Breast carcinoma
D. Mastitis

Explanation: ***Breast abscess*** - The presentation of a **painful breast lump**, fever, and malaise suggests an **infective process** leading to localized pus formation. - Typically, a **breast abscess occurs** after complications from mastitis, particularly in lactating women [1]. *Breast carcinoma* - Usually presents as a **painless lump** and does not typically cause **fever or malaise** in the early stages. - Characteristically demonstrates **hard, irregular borders** on examination, which is less likely in this acute scenario. - The possibility of **inflammatory carcinoma** mimicking a non-neoplastic inflammatory disorder should always be considered [1]. *Mastitis* - While it can cause **painful swelling** and fever, mastitis usually presents with **localized redness and warmth**, and does not typically lead to a discrete lump. - If left untreated, mastitis can lead to a **breast abscess**, but it is not the definitive diagnosis in this case. *Fibroadenoma* - Fibroadenomas are **benign tumors** that are usually **painless and mobile**, not associated with acute symptoms. - They typically do not cause systemic symptoms like **fever** or **malaise** and are more stable in size than the rapid increase seen here. **References:** [1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. The Breast, p. 1052.

Question 234: Which vitamin deficiency is associated with Bitot's spots?

A. Vitamin A (Correct Answer)
B. Vitamin B12
C. Vitamin C
D. Vitamin D

Explanation: ***Vitamin A*** - **Bitot's spots** are characteristic white or gray foamy patches on the conjunctiva, which are a classic sign of **vitamin A deficiency** [1]. - **Vitamin A** plays a critical role in maintaining the health and integrity of **epithelial tissues**, including those found in the conjunctiva and retina [1]. *Vitamin B12* - Deficiency in **vitamin B12** (cobalamin) is primarily associated with **megaloblastic anemia** and neurological symptoms, such as paresthesias and cognitive impairment. - While it can affect mucous membranes (e.g., glossitis), it does not cause **Bitot's spots**. *Vitamin C* - A deficiency in **vitamin C** (ascorbic acid) causes **scurvy**, characterized by weakened connective tissue, bleeding gums, poor wound healing, and perifollicular hemorrhages. - It has no known association with **Bitot's spots** or ocular surface changes like those seen in vitamin A deficiency. *Vitamin D* - **Vitamin D** deficiency is well-known for its role in bone health, leading to conditions like **rickets** in children and **osteomalacia** in adults [2]. - While essential for calcium metabolism, it does not cause **Bitot's spots** or other distinct ocular manifestations.

Question 235: A 24-year-old woman presents with recurrent vulvovaginal candidiasis. Which condition should be considered?

A. Diabetes mellitus (Correct Answer)
B. Hypertension
C. Hypothyroidism
D. Hyperlipidemia

Explanation: ***Diabetes mellitus*** - **Uncontrolled blood sugar** provides a rich environment for *Candida* overgrowth, leading to recurrent infections [1]. - Impaired immune response in diabetes also makes individuals more susceptible to **opportunistic fungal infections** [1]. *Hypertension* - **Hypertension** is a cardiovascular condition characterized by elevated blood pressure and is not directly linked to fungal infections. - It does not significantly alter the vaginal microenvironment or immune response in a way that would predispose to recurrent candidiasis. *Hypothyroidism* - **Hypothyroidism** involves insufficient thyroid hormone production and can cause symptoms like fatigue and weight gain. - There is no direct physiological link between thyroid hormone levels and susceptibility to vulvovaginal candidiasis. *Hyperlipidemia* - **Hyperlipidemia** is characterized by high levels of lipids (fats) in the blood and is a risk factor for cardiovascular disease. - This condition does not create a predisposition to recurrent *Candida* infections.

Question 236: A child with history of fever, photosensitivity, rash sparing nasolabial fold presents to OP. Identify the condition?

A. SLE (Correct Answer)
B. Polymorphous light eruption
C. Discoid lupus
D. Skin tuberculosis

Explanation: ***SLE*** - The combination of **fever**, **photosensitivity**, and a **rash sparing the nasolabial folds** (malar rash or butterfly rash) is highly characteristic of Systemic Lupus Erythematosus (SLE). - Childhood-onset SLE can present with similar mucocutaneous and systemic features as adult-onset disease. *Polymorphous light eruption* - This condition is primarily characterized by **photosensitive skin lesions** but typically does not involve systemic symptoms like fever. - While it presents with rash in sun-exposed areas, it generally lacks the distinct malar rash appearance and systemic involvement seen in SLE. *Discoid lupus* - Discoid lupus is a form of **cutaneous lupus** characterized by chronic, scaly, disfiguring plaques, often on the face and scalp. - It usually **lacks systemic symptoms** like fever and does not present as a widespread malar rash sparing nasal folds. *Skin tuberculosis* - Skin tuberculosis (lupus vulgaris or scrofuloderma) presents with **nodular, plaque-like lesions** or cold abscesses, often with ulceration and scarring. - It is not typically associated with **photosensitivity** or a malar rash, and fever, if present, is usually due to systemic Mycobacterium infection.

Question 237: Cullen's sign is associated with which of the following conditions?

A. Acute cholecystitis
B. Acute hepatitis
C. Acute pancreatitis (Correct Answer)
D. Blunt injury abdomen

Explanation: Detailed explanation of Cullen's sign and its associations: ***Acute pancreatitis*** - **Cullen's sign** is periumbilical ecchymosis (bruising around the navel) caused by **hemorrhagic pancreatitis**, where pancreatic enzymes leak into the abdominal cavity [1]. - This symptom indicates severe disease and often signifies **retroperitoneal hemorrhage** [1]. *Acute cholecystitis* - This condition involves inflammation of the gallbladder, typically causing **right upper quadrant pain**, fever, and leukocytosis. - While it can be severe, it does not typically present with the characteristic periumbilical bruising of Cullen's sign. *Acute hepatitis* - Acute hepatitis is an inflammation of the liver, leading to symptoms like **jaundice**, fatigue, and hepatomegaly. - It does not involve hemorrhagic changes that would produce Cullen's sign, which is specific to pancreatitis-induced retroperitoneal bleeding. *Blunt injury abdomen* - While blunt abdominal trauma can cause significant internal bleeding and bruising, **Cullen's sign specifically refers to periumbilical ecchymosis** due to pancreatic injury and retroperitoneal hemorrhage. - A general blunt injury might cause diffuse abdominal bruising, but not necessarily the distinct Cullen's sign associated with pancreatic damage.

Question 238: Which of the following conditions does not lead to pseudoparalysis?

A. Septic arthritis causing severe joint pain
B. Scurvy causing joint pain
C. Viral infection directly causing motor neuron damage (Correct Answer)
D. Osteomyelitis causing severe pain

Explanation: ***Viral infection directly causing motor neuron damage*** - **Pseudoparalysis** is apparent paralysis due to extreme pain or discomfort, not actual neurological damage. A viral infection directly causing motor neuron damage results in **true paralysis**, not pseudoparalysis [1]. - This option describes a **neurological deficit** leading to actual motor weakness or paralysis, which is distinct from the pain-induced immobility seen in pseudoparalysis. *Scurvy causing joint pain* - **Scurvy** can cause severe joint pain due to **subperiosteal hematomas** and hemorrhage, leading a child to avoid moving the limb, thus mimicking paralysis. - This pain-induced immobility, despite intact neurological function, is a classic example of **pseudoparalysis**. *Septic arthritis causing severe joint pain* - **Septic arthritis** causes extreme inflammation and pain in a joint, which can lead a child to refuse to move the affected limb. - This reluctance to move due to pain, despite normal nerve and muscle function, fits the definition of **pseudoparalysis**. *Osteomyelitis causing severe pain* - **Osteomyelitis**, an infection of the bone, can cause intense pain, swelling, and tenderness in the affected limb, leading to a refusal to move it. - The immobility results from the severe pain rather than a neurological deficit, making it a form of **pseudoparalysis**.

Question 239: Presence of Velcro crackles at the lung base on auscultation is a sign of which condition?

A. Scleroderma (Correct Answer)
B. Systemic Lupus Erythematosus
C. Wegener's Granulomatosis
D. Polyarteritis Nodosa

Explanation: ***Scleroderma*** - **Velcro crackles** at the lung base are a characteristic finding in **interstitial lung disease (ILD)**, which is a common and severe complication of **systemic sclerosis (scleroderma)** [1]. - The crackles are caused by the **fibrosis and stiffening of the alveoli** and small airways, which "pop open" during inspiration [2]. *Systemic Lupus Erythematosus* - While SLE can cause **pleuritis** and **lupus pneumonitis**, it is less commonly associated with **Velcro crackles** as a primary pulmonary manifestation [1]. - Lung involvement in SLE often presents as **pleural effusions** or diffuse alveolar hemorrhage, rather than restrictive ILD with crackles [1]. *Wegener's Granulomatosis* - This condition primarily affects the **upper and lower respiratory tracts** and kidneys, causing **granulomatous inflammation** and vasculitis. - Lung involvement typically manifests as **nodules**, **cavitation**, and **hemorrhage**, not typically **Velcro crackles**. *Polyarteritis Nodosa* - This is a **necrotizing vasculitis** that affects medium-sized muscular arteries. - Lung involvement is rare or atypical in PAN, and it does not characteristically present with **interstitial lung disease** or **Velcro crackles**.

Question 240: Which of the following types of gangrene is least likely to be associated with diabetes?

A. Dry gangrene
B. Wet gangrene
C. Fournier's gangrene (Correct Answer)
D. Gas gangrene

Explanation: Fournier's gangrene - This is a rare, life-threatening necrotizing fasciitis of the perineum and genital area, which can occur in people with diabetes but is not primarily or exclusively associated with the systemic vascular or neuropathic complications that lead to the other common types of gangrene in diabetic patients. - While diabetes is a risk factor for Fournier's gangrene due to immunosuppression, it's not a direct consequence of the typical diabetic microvascular or macrovascular disease processes that predominantly cause dry or wet gangrene [1]. Wet gangrene - This type of gangrene is highly associated with diabetes, often resulting from a combination of poor circulation, neuropathy, and infection in a moist environment [1]. - In diabetic patients, impaired immune function and high glucose levels create a favorable environment for bacterial growth, leading to rapid tissue destruction and liquefaction [1]. Dry gangrene - This is very common in diabetes due to the underlying atherosclerosis and peripheral artery disease, which lead to chronic ischemia without significant bacterial infection [1]. - Reduced blood flow, particularly to the extremities, causes tissue death and often results in a shriveled, dark, and mummified appearance [1]. Gas gangrene - Diabetics are at increased risk for gas gangrene due to their compromised immune systems and the development of wounds amenable to infection by Clostridium species [1]. - This rapid and aggressive infection is characterized by the production of gas in tissues and can arise from even minor trauma or surgical wounds in diabetic patients.

Practice by Chapter

Approach to Common Symptoms (Fever, Pain, Fatigue)

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Constitutional Symptoms and Their Differential Diagnosis

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Syncope and Presyncope

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Dizziness and Vertigo

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Dyspnea and Respiratory Distress

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Chest Pain Evaluation

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Abdominal Pain Assessment

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Headache Classification and Management

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Weight Loss and Cachexia

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Edema and Fluid Retention

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