Risk factors for carcinoma esophagus are all except?

RUHS, Jaipur, M.Sc Nursing Entrance Exam-2021

Pathology & Genetics

Medium

Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2021

Explanation

Helicobacter pylori (H. pylori) is a bacterium strongly associated with diseases of the stomach, not the esophagus.
It is a primary cause of peptic ulcer disease, chronic gastritis, and is classified as a Class I carcinogen for gastric adenocarcinoma and MALT lymphoma.
Evidence suggests H. pylori may have a protective role against esophageal adenocarcinoma. By causing atrophic gastritis, it can reduce gastric acid secretion, which in turn lessens gastroesophageal reflux (GERD), a major risk factor for adenocarcinoma of the esophagus.

Option A: Achalasia is a known risk factor for esophageal cancer. It is a motility disorder where the lower esophageal sphincter fails to relax, causing food to stagnate in the esophagus.
Option B: Ingestion of corrosive substances is a significant risk factor. The resulting chemical injury leads to chronic inflammation, scarring, and stricture formation, which predisposes the esophageal lining to malignant changes over time.
Option D: Plummer-Vinson syndrome, characterized by esophageal webs, iron-deficiency anemia, and dysphagia, is a well-established pre-malignant condition for squamous cell carcinoma of the esophagus, particularly in the post-cricoid region.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Risk factors for esophageal carcinoma as background academic context rather than a clinical decision trigger.
Nurses play a key role in patient education regarding modifiable risk factors for esophageal cancer, such as smoking cessation, moderating alcohol intake, and managing GERD symptoms.
Patients with long-standing risk factors like achalasia or a history of corrosive ingestion require long-term monitoring for symptoms like dysphagia, odynophagia, or weight loss, which could indicate malignant transformation.
What if the question asked for a risk factor for gastric cancer? In that case, H. pylori infection would be a correct answer, as it is a primary cause of distal gastric adenocarcinoma.

How to Approach the Question

First, identify the core subject of the question, which is risk factors for esophageal cancer.
Note the keyword 'EXCEPT'. This means you are looking for the option that is NOT a risk factor.
Evaluate each option against your knowledge of esophageal pathologies.
Recall that Achalasia, Corrosive injury, and Plummer-Vinson syndrome all cause chronic irritation or inflammation of the esophageal lining, predisposing to squamous cell carcinoma.
Recall that H. pylori primarily affects the stomach and is linked to gastric cancer, not esophageal cancer. This makes it the correct exception.

Concept Tested & Keywords

Concept Tested: Risk factors for esophageal carcinoma
Stem keywords: Risk factors, carcinoma esophagus
Lead-in keywords: except
Negative lead-in flag: The question asks for the option that is NOT a risk factor for esophageal cancer.

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E6 Medicine Harrison 22e Part 1 p. 1341-1343

E6 Pathology- ROBBINS & COTRAN PATHOLOGIC BASIS OF DISEASE 10TH Ed p. 758-760