**Question:** Corkscrew oesophagus is seen in:

A. Peptic ulcer disease
B. Chronic gastroesophageal reflux disease (GERD)
C. Ankylosing spondylitis
D. Chronic bronchitis

**Core Concept:**

Corkscrew oesophagus, also known as a hiatal hernia with esophageal motility disorder, is a rare anatomical and functional abnormality involving the esophagus. In this condition, the esophagus assumes a corkscrew or serpentine pattern due to the abnormal contractions of the smooth muscle cells lining the esophagus, which results in impaired food passage and reflux symptoms.

**Why the Correct Answer is Right:**

Corkscrew oesophagus is primarily associated with Peptic ulcer disease (PUD) and Chronic gastroesophageal reflux disease (GERD). In these conditions, the abnormal contractions of the smooth muscle cells are triggered by the increased pressure in the stomach due to ulceration or reflux. This increased pressure pushes the lower esophageal sphincter (LES) upward, causing the esophagus to twist into a corkscrew pattern, leading to symptoms like dysphagia, chest pain, and regurgitation.

**Why Each Wrong Option is Incorrect:**

A. Peptic ulcer disease and GERD are the primary etiologies for corkscrew oesophagus, not peptic ulcer disease itself. Peptic ulcer disease is a consequence of the increased pressure in the stomach, not a cause for corkscrew oesophagus.

C. Ankylosing spondylitis is a rheumatic condition affecting the spine and joints, not related to esophageal motility disorders.

D. Chronic bronchitis is an inflammation of the bronchi, unrelated to the motility disorders of the esophagus.

**Clinical Pearl:**

In cases of corkscrew oesophagus, the diagnosis is typically made through upper gastrointestinal endoscopy and manometry, which evaluates the pressure and motility of the esophagus. Treatment options include medications like proton pump inhibitors (PPIs), antacids, and botulinum toxin injections (for refractory cases). Surgery is rarely needed, but may be considered if symptoms persist despite medical management.