Gastroenterology Practice Questions

Q: Treatment of H. pylori is required in all of the following conditions EXCEPT?

Gastroesophageal reflux disease. **Explanation:** The primary goal of *H. pylori* eradication is to prevent complications such as peptic ulcer disease (PUD) [1] and gastric malignancy [3]. **1. Why Gastroesophageal Reflux Disease (GERD) is the correct answer:** There is no proven causal link between *H. pylori* infection and the development of GERD [2]. In fact, some studies suggest that *H. pylori* infection (especially strains causing corpus gastritis) may have a protective effect against GERD and its complications (like Barrett's esophagus) by reducing gastric acid secretion. Eradication of the bacteria does not improve GERD symptoms and, in some cases, may paradoxically worsen them [2]. Therefore, GERD is not a standard indication for testing or treating *H. pylori*. **2. Why the other options are incorrect:** * **Gastric and Duodenal Ulcers:** *H. pylori* is the most common cause of peptic ulcers. Eradication is mandatory as it promotes ulcer healing and significantly reduces the rate of recurrence and complications like bleeding [1]. * **Gastric Lymphoma:** Specifically, **MALToma** (Mucosa-Associated Lymphoid Tissue lymphoma) is strongly associated with *H. pylori* [3]. In early-stage (low-grade) MALToma, eradication of the bacteria alone can lead to complete regression of the tumor in up to 70-80% of cases [3]. **High-Yield Clinical Pearls for NEET-PG:** * **Definitive Indications for Eradication:** PUD (active or history of), MALToma, early gastric cancer (post-resection), and first-degree relatives of gastric cancer patients. * **Diagnostic Gold Standard:** Endoscopic biopsy followed by **Rapid Urease Test (RUT)** or Histopathology [1]. * **Non-invasive Test of Choice:** **Urea Breath Test (UBT)** is the best for confirming eradication (done 4 weeks after treatment) [1]. * **First-line Treatment:** Standard Triple Therapy (PPI + Clarithromycin + Amoxicillin/Metronidazole) for 14 days.

Q: Which of the following is NOT true about ulcerative colitis?

Noncaseating granulomas are characteristic. The correct answer is **D**. Ulcerative Colitis (UC) is characterized by continuous mucosal inflammation limited to the colon [1]. **Noncaseating granulomas** are the hallmark histological feature of **Crohn’s Disease**, not Ulcerative Colitis. In UC, the inflammation is superficial (mucosal and submucosal), whereas Crohn’s is transmural [1]. **Analysis of Options:** * **A. Rectum is typically involved:** This is a key feature of UC. The disease almost always starts in the rectum (**proctitis**) and spreads proximally in a continuous fashion [1]. * **B. Pseudopolyps can be present:** These are "islands" of regenerating or normal mucosa surrounded by areas of extensive ulceration [1]. They are a common finding in chronic UC. * **C. Pancolitis may occur:** While UC starts in the rectum, it can progress to involve the entire colon up to the cecum, a condition known as pancolitis [1]. **NEET-PG High-Yield Pearls:** 1. **Histology of UC:** Look for **crypt abscesses** (neutrophils in crypt lumens) and crypt distortion [1]. Granulomas are absent. 2. **Smoking Paradox:** Smoking is **protective** in UC but a risk factor for Crohn’s Disease. 3. **Lead Pipe Appearance:** Chronic UC leads to loss of haustrations, seen on barium enema as a "lead pipe" colon. 4. **Complications:** UC has a higher risk of **Toxic Megacolon** and **Primary Sclerosing Cholangitis (PSC)** compared to Crohn’s. 5. **Serology:** UC is typically associated with **p-ANCA**, while Crohn’s is associated with **ASCA**.

Q: Which of the following conditions is associated with an increased risk of developing adenocarcinoma of the esophagus?

Barrett's esophagus. The development of esophageal cancer is broadly divided into two histological types: **Adenocarcinoma** and **Squamous Cell Carcinoma (SCC)**. Understanding their distinct risk factors is crucial for NEET-PG. **1. Why Barrett's Esophagus is correct:** Barrett’s esophagus is the most significant precursor to **Adenocarcinoma** [1]. It occurs due to chronic Gastroesophageal Reflux Disease (GERD), where the normal stratified squamous epithelium of the lower esophagus undergoes metaplasia into simple columnar epithelium (with goblet cells). This metaplasia-dysplasia-carcinoma sequence specifically leads to adenocarcinoma, typically in the distal third of the esophagus [1]. **2. Why other options are incorrect:** * **Long-standing Achalasia:** While it increases the risk of esophageal cancer (due to food stasis and chronic inflammation), it is primarily associated with **Squamous Cell Carcinoma**, not adenocarcinoma. * **Corrosive Stricture:** Ingestion of lye or other corrosives causes chronic scarring and inflammation, which significantly increases the risk of **Squamous Cell Carcinoma** (often occurring decades after the initial insult). * **Alcohol Abuse:** Alcohol is a major risk factor for **Squamous Cell Carcinoma**. Interestingly, alcohol has not been strongly linked to adenocarcinoma; however, **obesity** and **smoking** are major risk factors for the adenocarcinoma subtype [1]. **Clinical Pearls for NEET-PG:** * **Location:** Adenocarcinoma is usually found in the **lower third**; SCC is more common in the **upper and middle thirds**. * **Most common type:** Globally, SCC is more common; however, in Western countries, the incidence of Adenocarcinoma is rising rapidly due to obesity and GERD [1]. * **Protective Factor:** *H. pylori* infection is paradoxically associated with a *decreased* risk of esophageal adenocarcinoma (likely due to reduced gastric acid production).

Q: The Child-Turcotte-Pugh (CTP) score is used for the assessment of severity in which of the following conditions?

Cirrhosis. **Explanation:** The **Child-Turcotte-Pugh (CTP) score** is a validated clinical tool used primarily to assess the prognosis and severity of **Cirrhosis** (chronic liver disease) [1]. It predicts the 1-year and 2-year survival rates and helps determine the necessity of liver transplantation. The score is calculated using five parameters (Mnemonic: **ABCDE**): 1. **A**lbumin 2. **B**ilirubin 3. **C**oagulation (INR/Prothrombin Time) 4. **D**istension (Ascites) 5. **E**ncephalopathy **Analysis of Options:** * **A. Cirrhosis (Correct):** CTP categorizes patients into Classes A (5–6 points), B (7–9 points), and C (10–15 points), reflecting increasing severity and mortality risk [1]. * **B. Hepatocellular Carcinoma (HCC):** While CTP is used to assess the underlying liver function in HCC patients, the specific staging system for HCC is the **BCLC (Barcelona Clinic Liver Cancer)** staging. * **C. Biliary Atresia:** The severity of liver disease in the pediatric population (including biliary atresia) is assessed using the **PELD (Pediatric End-stage Liver Disease)** score, rather than CTP [1]. **High-Yield Clinical Pearls for NEET-PG:** * **MELD Score:** Unlike CTP, the MELD (Model for End-Stage Liver Disease) score is purely objective (Bilirubin, Creatinine, INR) and is the primary tool for **organ allocation** in liver transplants [1]. * **CTP Limitations:** It includes subjective parameters like the grading of ascites and encephalopathy, which can be influenced by medical intervention (e.g., diuretics or lactulose) [1]. * **Class C** indicates a 1-year survival rate of approximately 45%, signifying decompensated cirrhosis.

Q: What is true about Crigler-Najjar syndrome type II?

Inherited as a recessive trait. Crigler-Najjar Syndrome (CNS) is a rare genetic disorder characterized by non-hemolytic unconjugated hyperbilirubinemia due to a deficiency of the enzyme **UDP-glucuronosyltransferase (UGT1A1)** [1]. **1. Why Option B is Correct:** Crigler-Najjar Type II (also known as **Arias Syndrome**) is inherited as an **autosomal recessive** trait (though some rare cases show dominant inheritance with variable penetrance). It involves a partial deficiency of UGT1A1, with enzyme activity typically <10% of normal [1]. **2. Analysis of Incorrect Options:** * **Option A:** CNS Type II is associated with a deficiency of **monoglucuronides** and **diglucuronides** (conjugated bilirubin), leading to a rise in unconjugated bilirubin [2]. * **Option C:** Kernicterus (bilirubin encephalopathy) is **rare** in Type II because bilirubin levels usually stay between 6–20 mg/dL. In contrast, Kernicterus is common and often fatal in **CNS Type I**, where bilirubin levels exceed 20–50 mg/dL [1]. * **Option D:** Phenobarbital is the **mainstay of treatment** for Type II. It acts as an enzyme inducer, stimulating the residual UGT1A1 activity and reducing serum bilirubin by 25% or more [2]. In Type I, Phenobarbital has no effect because enzyme activity is completely absent [1]. **High-Yield Clinical Pearls for NEET-PG:** * **CNS Type I:** Autosomal Recessive; 0% enzyme activity; No response to Phenobarbital; Treatment: Phototherapy, Plasmapheresis, Liver Transplant [1]. * **CNS Type II:** Autosomal Recessive; <10% enzyme activity; **Responds to Phenobarbital** [1]. * **Gilbert Syndrome:** Most common hereditary hyperbilirubinemia; ~30% enzyme activity; triggered by stress/fasting [1].

Question 1

Which of the following is a risk factor for cholangiocarcinoma?

Accepted Answer

Caroli disease

Answer

Pancreatitis

Answer

Pyelonephritis

Answer

Ulcerative colitis

Question 2

Which of the following is NOT true about acute pancreatitis?

Accepted Answer

Serum amylase levels remain elevated more than 72 hours after the onset of the attack.

Answer

Gallstones and alcohol are common etiologies.

Answer

It can cause a secondary pleural effusion.

Answer

It can present with shock.

Question 3

Treatment of H. pylori is required in all of the following conditions EXCEPT?

Accepted Answer

Gastroesophageal reflux disease

Answer

Gastric ulcers

Answer

Duodenal ulcers

Answer

Gastric lymphoma

Question 4

Which of the following is NOT true about ulcerative colitis?

Accepted Answer

Noncaseating granulomas are characteristic

Answer

Rectum is typically involved

Answer

Pseudopolyps can be present

Answer

Pancolitis may occur

Question 5

Which of the following conditions is associated with an increased risk of developing adenocarcinoma of the esophagus?

Accepted Answer

Barrett's esophagus

Answer

Long-standing achalasia

Answer

Corrosive stricture

Answer

Alcohol abuse

Question 6

The Child-Turcotte-Pugh (CTP) score is used for the assessment of severity in which of the following conditions?

Accepted Answer

Cirrhosis

Answer

Hepatocellular carcinoma

Answer

Biliary atresia

Answer

None of the above

Question 7

Which of the following is NOT useful for the management of severe Clostridium difficile infection?

Accepted Answer

Neomycin enema

Answer

Intravenous metronidazole

Answer

Fecal transplant

Answer

Tigecycline

Question 8

What is the treatment of choice for Zollinger Ellison syndrome (ZES)?

Accepted Answer

Proton pump inhibitors (PPIs)

Answer

Somatostatin analogues

Answer

Streptozocin

Answer

Sucralfate

Question 9

What is true about Crigler-Najjar syndrome type II?

Accepted Answer

Inherited as a recessive trait

Answer

Associated with diglucuronide deficiency

Answer

Kernicterus is commonly seen

Answer

Phenobarbital is not useful in management

Question 10

Secretory diarrhea is not seen in which of the following conditions?

Accepted Answer

Celiac disease

Answer

Magnesium injection

Answer

Cholera

Answer

Ulcerative colitis

Gastroenterology — MCQs

Gastroenterology — MCQs

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