**Question:** Hellers myotomy is used in -

A. Gastroesophageal reflux disease (GERD)
B. Achalasia
C. Hiatal hernia
D. Esophageal stricture

**Core Concept:**
Hellers myotomy is a surgical procedure that involves the division of the circular muscles in the esophagus to relieve the obstruction caused by a condition called achalasia. Achalasia is a disorder characterized by the failure of the lower esophageal sphincter (LES) and the esophageal body to relax properly, leading to difficulty in swallowing and regurgitation of food.

**Why the Correct Answer is Right:**
Hellers myotomy is specifically used in the treatment of achalasia (Option B) because it helps to relieve the obstruction caused by the abnormal muscle contractions in the esophagus. By dividing the circular muscles, the LES and esophageal body are able to relax, resulting in improved swallowing function and reduced regurgitation.

**Why Each Wrong Option is Incorrect:**
A. Gastroesophageal reflux disease (GERD) (Option A) is a condition characterized by the backward flow of stomach contents into the esophagus, causing symptoms like heartburn and acid regurgitation. Hellers myotomy is not used to treat GERD, as the procedure focuses on esophageal relaxation and not addressing the reflux issue itself.

C. Hiatal hernia (Option C) is a condition where the upper part of the stomach pushes through the diaphragm into the chest cavity. Hellers myotomy is not addressed to treat hiatal hernia, as the procedure is targeted towards improving esophageal relaxation and not addressing the hernia condition.

D. Esophageal stricture (Option D) is a narrowing of the esophagus due to inflammation, injury, or scarring. Hellers myotomy is not used to treat esophageal stricture, as the procedure focuses on esophageal relaxation and not addressing the stricture issue directly.

**Clinical Pearl:**
Hellers myotomy is a crucial surgical procedure for treating achalasia and improving the impaired esophageal relaxation. It is essential for medical students and practitioners to understand the correct indications and contraindications for this procedure, as well as its relation to other gastrointestinal conditions.