Gastroenterology Practice Questions

Q: Which diagnostic evaluation is most sensitive for achalasia cardia?

Esophageal manometry. **Explanation:** **Esophageal Manometry** is the **Gold Standard** and the most sensitive diagnostic tool for achalasia cardia [1]. The pathophysiology involves the failure of the Lower Esophageal Sphincter (LES) to relax and the absence of progressive peristalsis in the distal esophagus [1]. Manometry is the only test that directly measures these pressure changes and motor patterns, allowing for a definitive diagnosis even in early stages when structural changes are not yet visible on imaging [2]. **Why other options are incorrect:** * **Barium Swallow:** While it shows the classic "Bird’s beak" appearance (tapering of the distal esophagus), it is less sensitive than manometry, especially in early achalasia [2]. It is useful for assessing structural anatomy and esophageal dilation. * **Upper GI Endoscopy:** This is primarily used to **rule out pseudoachalasia** (malignancy at the GE junction) [2]. While it may show retained food or resistance at the LES (the "pop" sign), it cannot confirm the functional motility disorder. * **Chest X-ray:** This is a non-specific screening tool. It may show a widened mediastinum, an air-fluid level in the esophagus, or the absence of a gastric air bubble, but it is not diagnostic. **High-Yield Clinical Pearls for NEET-PG:** * **Chicago Classification:** Used to categorize achalasia into three types based on manometry (Type II is the most common and has the best prognosis) [2]. * **Key Manometric Findings:** 1) Incomplete LES relaxation (Residual pressure >10 mmHg), 2) Aperistalsis of the esophageal body, 3) Elevated resting LES pressure (>45 mmHg). * **Treatment of Choice:** Laparoscopic Heller Myotomy with partial fundoplication is the surgical gold standard; Peroral Endoscopic Myotomy (POEM) is a modern endoscopic alternative.

Q: The complete Rockall scoring system in the setting of non-variceal upper GI bleeding correlates well with:

Mortality. The **Rockall Score** is a clinical prediction tool used to assess the prognosis of patients with non-variceal upper gastrointestinal bleeding (NVUGIB). It is divided into two components: the clinical (pre-endoscopic) score and the complete (post-endoscopic) score. [1] ### **Explanation of the Correct Answer** **B. Mortality:** The primary objective and most validated application of the complete Rockall score is to predict **mortality**. It utilizes parameters such as age, shock (pulse and blood pressure), comorbidities, endoscopic diagnosis, and stigmata of recent hemorrhage. [1] A score of 8 indicates a high risk of death. ### **Explanation of Incorrect Options** * **A. Morbidity:** While a high score implies a sicker patient, the Rockall score is specifically validated as a prognostic tool for death rather than general morbidity. * **C. Rebleeding:** Although the Rockall score does have some correlation with the risk of rebleeding, it is significantly **less accurate** at predicting rebleeding compared to its ability to predict mortality. For predicting rebleeding, the **Forrest Classification** is the gold standard. * **D. Cardiac failure:** While "heart failure" is one of the comorbidities factored into the score, the score itself does not correlate with the development or severity of cardiac failure. ### **High-Yield Clinical Pearls for NEET-PG** * **Components of Rockall Score:** Age, Shock, Comorbidity, Diagnosis, and Endoscopic findings (Stigmata of hemorrhage). [1] * **Rockall vs. Blatchford:** The **Glasgow-Blatchford Score (GBS)** is superior for predicting the need for **clinical intervention** (transfusion or surgery) and is used *before* endoscopy. [1] The **Rockall Score** is used *after* endoscopy to predict **mortality**. * **Low-risk Rockall:** A score of **0–2** is considered low risk, often allowing for early discharge.

Q: Autoimmune hepatitis type I is characterized by the presence of all of the following antibodies except:

Anti-liver kidney microsome type 1 (Anti-LKM-1) antibodies. **Explanation:** Autoimmune Hepatitis (AIH) is a chronic inflammatory liver disease classified into two main types based on the specific circulating autoantibodies present [1]. **Why Option C is the correct answer:** **Anti-LKM-1 antibodies** are the hallmark of **Type II Autoimmune Hepatitis**, not Type I [1]. Type II AIH typically affects children and adolescents, follows a more aggressive clinical course, and is often associated with other autoimmune conditions like Type 1 Diabetes or Vitiligo. **Analysis of incorrect options:** * **Option A (ANA):** Antinuclear antibodies are the most common markers for **Type I AIH** [1]. They are found in approximately 75% of patients. * **Option B (SMA):** Anti-smooth muscle antibodies (specifically directed against F-actin) are highly characteristic of **Type I AIH**. Type I is the most common form globally (80% of cases) and typically affects young to middle-aged women [1]. **High-Yield Clinical Pearls for NEET-PG:** * **Type I AIH:** Characterized by **ANA** and/or **SMA** [1]. It has a bimodal age distribution (10–20 years and 45–70 years). * **Type II AIH:** Characterized by **Anti-LKM-1** and/or **Anti-Liver Cytosol type 1 (Anti-LC1)** antibodies. * **Hypergammaglobulinemia:** A classic laboratory finding in AIH is a selective elevation of **IgG levels** [1]. * **Histology:** The characteristic pathological feature is **Interface Hepatitis** (piecemeal necrosis) with a dense plasma cell infiltrate [1]. * **Treatment:** The mainstay of therapy is corticosteroids (Prednisolone) alone or in combination with Azathioprine [1].

Q: What is the most common symptom of primary biliary cirrhosis?

Pruritus. **Explanation:** **Primary Biliary Cholangitis (PBC)**, formerly known as Primary Biliary Cirrhosis, is a chronic autoimmune cholestatic liver disease characterized by the destruction of small intrahepatic bile ducts [1]. **Why Pruritus is the correct answer:** Pruritus (itching) is the **most common presenting symptom** of PBC, occurring in approximately 50–70% of patients [1]. It often precedes the onset of jaundice by months or years [1]. While the exact pathogenesis is debated, it is believed to be caused by the accumulation of pruritogens (such as bile acids, endogenous opioids, or lysophosphatidic acid) in the skin due to cholestasis. It is typically worse at night and in warm weather. **Analysis of Incorrect Options:** * **B. Abdominal pain:** While some patients may experience vague right upper quadrant discomfort, it is not a hallmark or the most common symptom [1]. * **C. Jaundice:** This is a late-stage finding [1]. Its appearance usually signifies advanced ductal destruction and carries a poor prognostic implication. * **D. Bleeding:** Variceal bleeding or easy bruising (due to Vitamin K malabsorption) occurs only in the advanced cirrhotic stage of the disease. **NEET-PG High-Yield Pearls:** * **Demographics:** Classically affects middle-aged women (9:1 female-to-male ratio) [1]. * **Most Common Initial Symptom:** Fatigue (often reported alongside or before pruritus) [1]. * **Diagnostic Gold Standard:** **Anti-Mitochondrial Antibody (AMA)** is positive in >95% of cases (highly specific) [1]. * **Biochemical Marker:** Disproportionate elevation of **Alkaline Phosphatase (ALP)**. * **Treatment of Choice:** Ursodeoxycholic acid (UDCA) slows disease progression. * **Associated Conditions:** Frequently associated with other autoimmune diseases like Sjögren’s syndrome and Hashimoto’s thyroiditis [1].

Q: Which of the following is NOT a hallmark of celiac sprue?

It may be associated with diabetes insipidus.. ### Explanation **Celiac Disease (Gluten-Sensitive Enteropathy)** is an immune-mediated inflammatory disorder of the small intestine triggered by the ingestion of prolamins (gluten) in genetically predisposed individuals (HLA-DQ2/DQ8). **Why Option D is the Correct Answer (The "NOT" hallmark):** Celiac disease is strongly associated with **autoimmune** conditions, most notably **Type 1 Diabetes Mellitus** (up to 10% of patients), autoimmune thyroiditis, and dermatitis herpetiformis. It is **not** associated with **Diabetes Insipidus**, which is a disorder of water metabolism related to Antidiuretic Hormone (ADH) deficiency or resistance. **Analysis of Incorrect Options:** * **Option A:** This is a hallmark. Celiac sprue is defined as a permanent intolerance to gluten (found in wheat, barley, and rye), leading to mucosal inflammation and villous atrophy. * **Option B:** This is a hallmark. **IgA tissue transglutaminase (tTG) antibody** is the preferred screening test due to its high sensitivity and specificity (>95%). (Note: IgA endomysial antibody is more specific but less sensitive). * **Option C:** This is the **gold standard** for diagnosis. Biopsy (usually from the second part of the duodenum) classically shows villous atrophy, crypt hyperplasia, and increased intraepithelial lymphocytes (Marsh Criteria). **High-Yield Clinical Pearls for NEET-PG:** * **Dermatitis Herpetiformis:** The pathognomonic skin manifestation (itchy vesicles on elbows/knees); biopsy shows granular IgA deposits in dermal papillae. * **Malignancy Risk:** Increased risk of **Enteropathy-associated T-cell lymphoma (EATL)** and small bowel adenocarcinoma. * **Deficiencies:** Often presents with iron-deficiency anemia (refractory to oral iron) and Vitamin D/Calcium deficiency. * **Treatment:** Strict lifelong **Gluten-Free Diet (GFD)**. Safe grains include Rice, Maize (Corn), and Millets.

Q: Anti-LKM antibodies are found in which condition?

Autoimmune hepatitis. Autoimmune Hepatitis (AIH) is a chronic inflammatory liver disease characterized by the presence of specific autoantibodies [1]. Anti-LKM-1 (Liver-Kidney Microsome type 1) antibodies are the hallmark of Type 2 Autoimmune Hepatitis, which typically affects children and adolescents. These antibodies are directed against the enzyme Cytochrome P450 2D6. Analysis of Options: * Autoimmune Hepatitis (Correct): AIH is classified into two types. Type 1 is associated with Anti-Smooth Muscle Antibodies (ASMA) and ANA. Type 2 is associated with Anti-LKM-1 and Anti-LC1 (Liver Cytosol type 1) antibodies [1]. * Inflammatory Myopathies: These (e.g., Dermatomyositis/Polymyositis) are associated with Anti-Jo-1, Anti-Mi-2, and Anti-SRP antibodies. * Systemic Lupus Erythematosus (SLE): Characterized by Anti-dsDNA (specific) and Anti-Smith antibodies. * CREST Syndrome: A limited form of Systemic Sclerosis characterized by Anti-Centromere antibodies. High-Yield Clinical Pearls for NEET-PG: * Type 1 AIH: Most common; seen in adults; markers: ASMA and ANA. * Type 2 AIH: More severe; seen in children; markers: Anti-LKM-1. * Hypergammaglobulinemia: A classic biochemical finding in AIH (specifically elevated IgG) [1]. * Interface Hepatitis: The characteristic histological finding on liver biopsy (piecemeal necrosis) [1]. * Treatment: Prednisolone and Azathioprine are the mainstays of therapy [1].

Q: Which extra-intestinal symptom of IBD worsens with exacerbation of disease activity?

Arthritis. The extra-intestinal manifestations (EIMs) of Inflammatory Bowel Disease (IBD) are categorized based on whether their clinical course parallels the activity of the underlying bowel inflammation. **Why Arthritis is Correct:** Peripheral arthritis (Type 1) is the most common EIM of IBD. **Type 1 peripheral arthritis** involves large joints (pauciarticular) and characteristically **parallels the activity of the intestinal disease** [1]. When the colitis flares, the joint pain and swelling worsen; conversely, medical or surgical treatment of the bowel inflammation typically leads to resolution of the arthritis. **Analysis of Incorrect Options:** * **Toxic Megacolon (A):** This is a life-threatening **intestinal complication** of IBD (specifically Ulcerative Colitis), not an extra-intestinal symptom. * **Primary Sclerosing Cholangitis (C):** PSC is strongly associated with UC, but its progression is **independent** of bowel activity. Colectomy or remission of colitis does not improve the course of PSC. * **Uveitis (D):** While ocular manifestations like episcleritis parallel bowel activity, **uveitis** often follows an **independent** course and may persist even when the bowel disease is quiescent. **High-Yield Clinical Pearls for NEET-PG:** * **Parallels Bowel Activity:** Type 1 Peripheral Arthritis, Episcleritis, Erythema Nodosum, and Aphthous ulcers. * **Independent of Bowel Activity:** Ankylosing Spondylitis, Sacroiliitis [1], Uveitis, Primary Sclerosing Cholangitis (PSC), and Pyoderma Gangrenosum. * **HLA Association:** Ankylosing spondylitis in IBD is strongly associated with **HLA-B27** [2]. * **Most common EIM overall:** Arthritis.

Q: Which of the following is more commonly associated with acute liver failure?

Hepatitis B. Hepatitis B (HBV) is the most common viral cause of Acute Liver Failure (ALF) worldwide, particularly in endemic regions like Asia and Africa. While most HBV infections in adults are self-limiting, approximately 1% of cases progress to fulminant hepatic failure due to an intense, immune-mediated destruction of hepatocytes [1]. Analysis of Options: * Hepatitis B (Correct): It is the leading viral cause of ALF [4]. The risk of fulminant failure increases significantly with coinfection or superinfection with Hepatitis D, or in cases of reactivation (e.g., during chemotherapy) [3]. * Hepatitis A: While HAV can cause ALF, it is much less frequent than HBV [4]. It typically follows a benign, self-limiting course, especially in children [2]. * Hepatitis C: HCV is a major cause of chronic liver disease and cirrhosis but is extremely rare as a cause of acute liver failure [4]. It typically does not cause a robust enough acute immune response to trigger fulminant necrosis. * Hepatitis D: HDV requires the presence of HBV to replicate. While it increases the severity of HBV infection, as a standalone option, HBV remains the primary driver and the more common epidemiological answer [4]. High-Yield Clinical Pearls for NEET-PG: * Most common cause of ALF overall: In developed countries, it is Acetaminophen (Paracetamol) toxicity; in developing countries, it is Viral Hepatitis (HBV/HEV). * Pregnancy & ALF: Hepatitis E (HEV) is the most common cause of ALF in pregnant women, carrying a high mortality rate (~20%). * Definition of ALF: Development of hepatic encephalopathy and coagulopathy (INR >1.5) within 26 weeks of the onset of symptoms in a patient without pre-existing cirrhosis [1].

Question 1

Which of the following statements regarding diagnostic studies in steatorrhea of various etiologies is FALSE?

Accepted Answer

Intestinal lymphangiectasia: D-Xylulose test is abnormal, Schilling test is normal, duodenal biopsy shows dilated lymphatics.

Answer

Chronic pancreatitis: D-Xylulose test is normal, Schilling test is abnormal, duodenal biopsy is normal.

Answer

Bacterial overgrowth syndrome: D-Xylulose test is normal, Schilling test is abnormal, duodenal biopsy is normal.

Answer

Celiac disease: D-Xylulose test is decreased, Schilling test is normal, duodenal biopsy shows absent villi.

Question 2

Which diagnostic evaluation is most sensitive for achalasia cardia?

Accepted Answer

Esophageal manometry

Answer

Barium swallow

Answer

Upper GI endoscopy

Answer

Chest X-ray

Question 3

The complete Rockall scoring system in the setting of non-variceal upper GI bleeding correlates well with:

Accepted Answer

Mortality

Answer

Morbidity

Answer

Rebleeding

Answer

Cardiac failure

Question 4

Autoimmune hepatitis type I is characterized by the presence of all of the following antibodies except:

Accepted Answer

Anti-liver kidney microsome type 1 (Anti-LKM-1) antibodies

Answer

Antinuclear antibodies (ANA)

Answer

Anti-smooth muscle antibodies (SMA)

Answer

None of the above

Question 5

What is the most common symptom of primary biliary cirrhosis?

Accepted Answer

Pruritus

Answer

Abdominal pain

Answer

Jaundice

Answer

Bleeding

Question 6

A 66-year-old woman with a history of chronic alcohol abuse has had headaches and nausea for the past 4 days. She has become increasingly obtunded. On physical examination, she has right upper quadrant tenderness, tachycardia, tachypnea, and hypotension. Laboratory studies show serum AST of 475 U/L, ALT of 509 U/L, alkaline phosphatase of 23 U/L, total bilirubin of 0.9 mg/dL, albumin of 3.8 g/dL, and total protein of 6.1 g/dL. She is treated with N-acetylcysteine. Which of the following drugs has she most likely ingested in excess?

Accepted Answer

Acetaminophen

Answer

Aspirin

Answer

Ibuprofen

Answer

Meperidine

Question 7

Which of the following is NOT a hallmark of celiac sprue?

Accepted Answer

It may be associated with diabetes insipidus.

Answer

It is a gluten-sensitive enteropathy.

Answer

The most sensitive test is the presence of IgA antibodies to tissue transglutaminase.

Answer

It is diagnosed on the basis of a small intestinal biopsy.

Question 8

Anti-LKM antibodies are found in which condition?

Accepted Answer

Autoimmune hepatitis

Answer

Inflammatory myopathies

Answer

Systemic lupus erythematosus (SLE)

Answer

CREST syndrome

Question 9

Which extra-intestinal symptom of IBD worsens with exacerbation of disease activity?

Accepted Answer

Arthritis

Answer

Toxic megacolon

Answer

Primary sclerosing cholangitis

Answer

Uveitis

Question 10

Which of the following is more commonly associated with acute liver failure?

Accepted Answer

Hepatitis B

Answer

Hepatitis A

Answer

Hepatitis C

Answer

Hepatitis D

Gastroenterology — MCQs

Gastroenterology — MCQs

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