Gastroenterology Practice Questions

Q: A patient presents to a physician with "heartburn" and dysphagia. Esophageal motility studies demonstrate a near absence of smooth muscle peristalsis and lower esophageal sphincter tone. No mass lesions are noted, and the esophagus is not dilated. Which of the following findings would most likely also be present?

Thick skin. **Explanation:** The clinical presentation of heartburn and dysphagia, combined with manometric findings of **absent peristalsis** and **decreased Lower Esophageal Sphincter (LES) tone**, is classic for **Systemic Sclerosis (Scleroderma)**. [3] In Scleroderma, the esophageal smooth muscle undergoes atrophy and fibrosis. [3] This leads to an incompetent LES (causing severe GERD/heartburn) and aperistalsis (causing dysphagia). Since the LES is "wide open" rather than obstructed, the esophagus typically does not dilate significantly, unlike in Achalasia. [1] **Thick skin (Sclerodactyly)** is the hallmark cutaneous finding of this systemic disease. [2] **Analysis of Incorrect Options:** * **A & B (Anemia & Atrophic glossitis):** These are features of **Plummer-Vinson Syndrome**, which presents with esophageal webs and iron-deficiency anemia. However, it does not cause the specific manometric pattern of low LES pressure. * **C (Hourglass stomach):** This is the classic radiological description of a **Sliding Hiatal Hernia**. While hiatal hernias cause heartburn, they do not explain the global absence of esophageal peristalsis. **NEET-PG High-Yield Pearls:** * **Manometry Contrast:** * **Achalasia:** *Increased* LES pressure + Failure to relax + Aperistalsis. [1] * **Scleroderma:** *Decreased* LES pressure + Aperistalsis. [3] * **CREST Syndrome:** Remember the pentad: **C**alcinosis, **R**aynaud’s, **E**sophageal dysmotility, **S**clerodactyly, and **T**elangiectasia. [2] * **Autoantibody:** Anti-Scl-70 (diffuse) and Anti-centromere (limited/CREST).

Q: Which of the following is NOT true regarding Zollinger Ellison syndrome?

Decreased ratio of basal acid output to maximal acid output. **Explanation:** Zollinger-Ellison Syndrome (ZES) is caused by a gastrin-secreting tumor (gastrinoma), typically located in the "gastrinoma triangle." This leads to massive gastric acid hypersecretion. **1. Why Option D is the Correct Answer (The False Statement):** In ZES, the **Basal Acid Output (BAO)** is significantly elevated because the tumor continuously secretes gastrin. While the **Maximal Acid Output (MAO)** (stimulated by pentagastrin) is also high, the stomach is already secreting near its maximum capacity at baseline. Therefore, the **BAO/MAO ratio is increased** (typically >0.6 or 60%). A decreased ratio would imply low baseline acid production, which is the opposite of ZES pathophysiology. **2. Why the other options are wrong (True Statements):** * **A. Diarrhea:** This is a common symptom (seen in ~50% of patients). It occurs because the massive acid load inactivates pancreatic enzymes (lipase) and damages the intestinal mucosa, leading to malabsorption and steatorrhea. * **B. Recurrence after operation:** ZES has a high rate of recurrence, especially in patients with MEN-1 syndrome, where tumors are often small, multiple, and difficult to localize. * **C. Hypergastrinemia:** This is the hallmark of ZES. Fasting serum gastrin levels are typically >1000 pg/mL. **High-Yield Clinical Pearls for NEET-PG:** * **Diagnosis:** The best initial test is Fasting Serum Gastrin. The most sensitive/confirmatory test is the **Secretin Stimulation Test** (Secretin causes a paradoxical *increase* in gastrin in ZES). * **Location:** Most common site is the **Duodenum**, followed by the Pancreas. * **Association:** 25% of cases are associated with **MEN-1** (3Ps: Parathyroid, Pancreas, Pituitary). * **Ulcer Site:** Look for ulcers in "atypical" locations, such as the distal duodenum or jejunum.

Q: Congenital Wilson's disease is characterized by which of the following?

May present as acute hepatitis. **Explanation:** Wilson’s Disease (Hepatolenticular degeneration) is an autosomal recessive disorder caused by a mutation in the **ATP7B gene** on chromosome 13. This leads to impaired biliary copper excretion and failure to incorporate copper into ceruloplasmin, resulting in toxic copper accumulation in the liver, brain, and cornea. **Why Option B is correct:** Wilson’s disease is a "great masquerader" in hepatology. While it is a chronic condition, it frequently presents as **acute hepatitis**, which can progress to fulminant hepatic failure (often characterized by Coombs-negative hemolytic anemia and low alkaline phosphatase levels) [1]. Hepatic symptoms typically manifest in childhood or adolescence (ages 5–15), whereas neuropsychiatric symptoms appear later [1]. **Why other options are incorrect:** * **Option A:** Kayser-Fleischer (KF) rings are caused by copper deposition in the **Descemet’s membrane** of the cornea. They are **never present at birth** [1]; they develop over time as copper stores saturate the liver and spill into the systemic circulation. * **Option C:** In Wilson’s disease, there is **increased 24-hour urinary copper excretion** (>100 μg/day) because non-ceruloplasmin-bound copper is filtered by the kidneys. * **Option D:** The hallmark of the disease is **increased hepatic copper concentration** (>250 μg/g dry weight), as the liver is the primary site of accumulation. **NEET-PG High-Yield Pearls:** * **Best Initial Screening Test:** Serum Ceruloplasmin (decreased <20 mg/dL). * **Gold Standard Diagnosis:** Liver biopsy for copper quantification. * **Most Sensitive Finding for Neuro-Wilson’s:** "Face of the Giant Panda" sign on MRI Brain [1]. * **Treatment of Choice:** Chelating agents like **D-Penicillamine** (requires Pyridoxine supplementation) or Trientine. Zinc is used for maintenance or asymptomatic patients.

Q: Which of the following is the most common presenting symptom of non-cirrhotic portal hypertension?

Upper gastrointestinal bleeding. **Explanation:** **Non-Cirrhotic Portal Hypertension (NCPH)** refers to a group of disorders characterized by an increase in portal pressure (HVPG > 5 mmHg) in the absence of cirrhosis [1]. The two most common types are **Extrahepatic Portal Venous Obstruction (EHPVO)** and **Non-Cirrhotic Portal Fibrosis (NCPF)**. **Why Upper Gastrointestinal (UGI) Bleeding is correct:** In NCPH, the liver's synthetic function remains preserved, but the portal pressure is significantly elevated. This leads to the formation of large, high-pressure esophageal and gastric varices [2]. Because these patients do not have the systemic decompensation seen in cirrhosis, they typically remain asymptomatic until a varix ruptures. Therefore, **painless, massive hematemesis (UGI bleeding)** is the most common and often the first presenting symptom [2]. **Why other options are incorrect:** * **Chronic Liver Disease (CLD):** By definition, NCPH occurs in the absence of cirrhosis. Stigmata of CLD (like palmar erythema or spider nevi) are typically absent. * **Ascites:** Since serum albumin and liver function are preserved, ascites is rare [3]. If present, it is usually transient and follows an episode of UGI bleed or infection. * **Encephalopathy:** Hepatic encephalopathy is extremely rare in NCPH because the liver's metabolic and detoxification functions are intact. **High-Yield Clinical Pearls for NEET-PG:** * **Hallmark of NCPH:** Massive Splenomegaly + Variceal Bleed + Preserved Liver Function. * **EHPVO:** Most common cause of portal hypertension in children; often associated with a history of neonatal umbilical sepsis. * **Investigation of Choice:** Color Doppler Ultrasound (shows "Cavernoma" formation in EHPVO) [3]. * **Prognosis:** Much better than cirrhotic portal hypertension because the liver is healthy.

Q: Which of the following is true regarding classical spontaneous bacterial peritonitis?

Ascitic fluid neutrophil count is > 250/cumm. Spontaneous Bacterial Peritonitis (SBP) is an acute bacterial infection of ascitic fluid, occurring in the absence of an identifiable intra-abdominal source of infection (like a perforated viscus). It is a common and serious complication of cirrhosis. **Why Option A is Correct:** The diagnosis of SBP is established by an **absolute neutrophil count (ANC) ≥ 250 cells/mm³** (0.25 x 10⁹/L) in the ascitic fluid. This is the most sensitive indicator of infection. Even if the culture is negative (Culture-Negative Neutrocytic Ascites), a patient with an ANC > 250 should be treated empirically with antibiotics (e.g., Cefotaxime). **Why Other Options are Incorrect:** * **Option B & D:** These are features of **Secondary Peritonitis**. SBP occurs without a surgically treatable source like bowel perforation. Clinical signs of "board-like rigidity" and "rebound tenderness" are typical of surgical peritonitis; SBP often presents subtly with vague abdominal pain or worsening encephalopathy. * **Option C:** SBP is typically **monomicrobial**. The most common organisms are *E. coli*, *Klebsiella*, and *Streptococcus pneumoniae*. Isolation of multiple organisms (polymicrobial) suggests Secondary Peritonitis due to a gut wall breach. **High-Yield Clinical Pearls for NEET-PG:** * **Most common organism:** *Escherichia coli*. * **Treatment of choice:** Third-generation cephalosporins (Cefotaxime). * **Albumin Therapy:** Administering IV albumin (1.5g/kg on day 1 and 1g/kg on day 3) reduces the risk of Hepatorenal Syndrome and mortality [1]. * **Prophylaxis:** Indicated for patients with low ascitic protein (<1.5 g/dL) or a prior episode of SBP (usually with Norfloxacin or Rifaximin) [2].

Q: Which of the following is NOT a feature of Celiac disease?

Biopsy findings are pathognomonic for the disease.. **Explanation:** The correct answer is **D**. While small bowel biopsy is a cornerstone of diagnosis, the findings (villous atrophy, crypt hyperplasia, and increased intraepithelial lymphocytes) are **not pathognomonic** [1]. These histological features can also be seen in Tropical Sprue, Giardiasis, Common Variable Immunodeficiency (CVID), and Autoimmune Enteropathy. Diagnosis requires a combination of clinical features, positive serology (anti-tTG IgA), and biopsy findings that improve on a gluten-free diet [1]. **Analysis of Incorrect Options:** * **Option A:** Celiac disease typically presents with malabsorptive symptoms [1]. Iron deficiency anemia (refractory to oral iron) is a classic "silent" presentation due to primary involvement of the duodenum, where iron is absorbed [1]. * **Option B:** It is an immune-mediated enteropathy triggered by the ingestion of **gluten** (specifically the gliadin fraction) found in wheat, barley, and rye [1]. * **Option C:** Over 95% of patients express **HLA-DQ2** (most common) or **HLA-DQ8** [1]. The absence of these alleles has a high negative predictive value, effectively ruling out the disease. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard Diagnosis:** Small bowel biopsy (D2 part of the duodenum). * **Best Initial Screening Test:** IgA Anti-tissue Transglutaminase (anti-tTG) antibody. * **Dermatological Association:** **Dermatitis Herpetiformis** (itchy, vesicular rash on extensors; biopsy shows IgA deposits at dermal papillae). * **Associated Malignancy:** Increased risk of **Enteropathy-associated T-cell lymphoma (EATL)**. * **Marsh Classification:** Used to grade the severity of histological changes on biopsy.

Question 1

A patient presents to a physician with "heartburn" and dysphagia. Esophageal motility studies demonstrate a near absence of smooth muscle peristalsis and lower esophageal sphincter tone. No mass lesions are noted, and the esophagus is not dilated. Which of the following findings would most likely also be present?

Accepted Answer

Thick skin

Answer

Anemia

Answer

Atrophic glossitis

Answer

Hourglass-shaped stomach on barium swallow

Question 2

Which of the following is NOT true regarding Zollinger Ellison syndrome?

Accepted Answer

Decreased ratio of basal acid output to maximal acid output

Answer

Diarrhoea

Answer

Recurrence after operation

Answer

Hypergastrinemia

Question 3

Congenital Wilson's disease is characterized by which of the following?

Accepted Answer

May present as acute hepatitis

Answer

Kayser-Fleischer rings are present at birth

Answer

Decreased urinary copper excretion

Answer

Decreased hepatic copper concentration

Question 4

Which of the following is the most common presenting symptom of non-cirrhotic portal hypertension?

Accepted Answer

Upper gastrointestinal bleeding

Answer

Chronic liver disease

Answer

Ascites

Answer

Encephalopathy

Question 5

A 23-year-old female presented with symptoms of severe pancreatitis. All of the following are considered bad prognostic signs in this patient, EXCEPT:

Accepted Answer

Prothrombin time > 2 times the control

Answer

TLC > 16000

Answer

Calcium < 8 mg/dL

Answer

Glucose > 200 mg%

Question 6

A 30-year-old female patient presents with non-progressive dysphagia for both solids and liquids. What is the characteristic finding on barium swallow that will confirm the probable diagnosis?

Accepted Answer

Multiple sacculations and pseudodiverticula (corkscrew esophagus)

Answer

Dilated esophagus with a narrow lower end (rat tail esophagus)

Answer

Narrow and irregular esophageal lumen

Answer

Stricture ulcer in the esophagus

Question 7

Which of the following is true regarding classical spontaneous bacterial peritonitis?

Accepted Answer

Ascitic fluid neutrophil count is > 250/cumm

Answer

Bowel perforation should be present

Answer

Multiple organisms are isolated from ascitic fluid

Answer

Board-like rigidity is present in the abdomen

Question 8

A 9-month-old pregnant lady presents with jaundice, abdominal distension, and pedal edema after delivering a normal baby. Her clinical condition deteriorates with increasing abdominal distension and severe ascites. Her bilirubin is 5 mg/dL, S. alkaline phosphatase is 450 U/L, and ALT is 345 U/L. There is tender hepatomegaly 6 cm below the costal margin, and the ascitic fluid shows protein less than 2 mg%. What is the most likely diagnosis?

Accepted Answer

Budd-Chiari syndrome

Answer

Acute fatty liver of pregnancy

Answer

HELLP syndrome

Answer

Acute fulminant liver failure

Question 9

A 47-year-old man presents to the emergency room with sudden onset of severe upper abdominal pain with vomiting. The pain is focused in the epigastrium with radiation to the back. Serum amylase levels are 2000 U/L. Which of the following are the most commonly encountered predisposing factors for this condition?

Accepted Answer

Alcohol use and gallstones

Answer

Helicobacter pylori infection and excess gastric acid secretion

Answer

Hepatitis B infection and iron overload

Answer

Obesity and high serum cholesterol

Question 10

Which of the following is NOT a feature of Celiac disease?

Accepted Answer

Biopsy findings are pathognomonic for the disease.

Answer

Diarrhea, malabsorption, and iron deficiency anemia are common symptoms.

Answer

It is a condition characterized by sensitivity to gluten.

Answer

Individuals with Celiac disease often express HLA DQ2 or DQ8.

Gastroenterology — MCQs

Gastroenterology — MCQs

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