Correct Answer: D. Achalasia cardia
Heller's operation (laparoscopic or open cardiomyotomy) is the gold-standard surgical treatment for achalasia cardia. Achalasia is characterized by failure of the lower esophageal sphincter (LES) to relax and loss of normal esophageal peristalsis, leading to progressive dysphagia and megaesophagus. The pathophysiology involves degeneration of ganglion cells in the myenteric plexus, resulting in unopposed parasympathetic innervation and persistent LES tone. Heller's operation involves division of the circular muscle fibers of the LES (myotomy) for a length of 6 cm proximally and 2–3 cm distally, typically combined with a partial fundoplication (Dor or Toupet) to prevent postoperative reflux. This procedure relieves the mechanical obstruction by reducing LES pressure and restoring passage of food into the stomach. In India, achalasia is relatively common in certain regions, and Heller's myotomy remains the definitive surgical option when medical therapy (calcium channel blockers, nitrates, botulinum toxin injections) fails or is not tolerated. The operation provides long-term symptom relief in >90% of patients and is preferred over esophageal dilatation due to lower recurrence rates.
Why the other options are wrong
A. Esophageal stricture — Esophageal strictures (caustic, peptic, radiation-induced, or post-surgical) are managed by endoscopic dilation, bougie dilatation, or esophageal stent placement—not myotomy. Heller's operation does not address the fibrotic narrowing that characterizes strictures. This option confuses functional obstruction (achalasia) with anatomical obstruction (stricture). B. Carcinoma esophagus — Esophageal cancer requires oncological resection (Ivor Lewis esophagectomy or McKeown procedure) with lymphadenectomy, not myotomy. Heller's operation has no role in malignancy. This is a distractor that tests whether students confuse benign motility disorders with malignant disease requiring different surgical approaches. C. Hypertrophic pyloric stenosis — Hypertrophic pyloric stenosis (HPS) in infants is treated by Ramstedt's pyloromyotomy, not Heller's operation. While both are myotomy procedures, they target different anatomical sites—Ramstedt addresses the pylorus, Heller addresses the gastroesophageal junction. This is a classic NBE trap pairing two myotomy procedures to test anatomical precision.
High-Yield Facts
- Heller's operation = laparoscopic cardiomyotomy for achalasia; divides circular muscle fibers of LES for 6 cm proximally and 2–3 cm distally.
- Achalasia pathophysiology = degeneration of myenteric plexus ganglion cells → loss of LES relaxation + absent esophageal peristalsis.
- Heller's success rate >90% long-term symptom relief; superior to repeated endoscopic dilation (which has 50% recurrence at 5 years).
- Partial fundoplication (Dor anterior or Toupet posterior) is routinely added to Heller's myotomy to prevent postoperative reflux.
- Ramstedt's pyloromyotomy (not Heller's) is the operation for hypertrophic pyloric stenosis in infants—common NBE confusion point.
Mnemonics
HELLER = Esophageal cardia Heller → Esophageal cardia (achalasia). Ramstedt → Pyloric stenosis. Myotomy procedures are named by surgeon and anatomical site. Achalasia Triad Dysphagia (solids > liquids), Regurgitation (undigested food), Chest pain. Heller's myotomy relieves all three by reducing LES pressure.
NBE Trap
NBE pairs Heller's operation with hypertrophic pyloric stenosis (Ramstedt's pyloromyotomy) to test whether students confuse two different myotomy procedures performed at different anatomical sites. Both are "myotomy" operations, but the anatomical target and patient population are entirely different.
Clinical Pearl
In Indian practice, achalasia often presents late with severe dysphagia and megaesophagus; Heller's myotomy combined with fundoplication is the definitive treatment after failed medical therapy or botulinum toxin injections. Laparoscopic approach is now standard, reducing morbidity compared to open surgery.
_Reference: Bailey & Love Ch. 62 (Esophagus); Harrison Ch. 298 (Disorders of Swallowing)_