## Why Schatzki ring at the squamocolumnar junction causing intermittent dysphagia to solids is right A Schatzki ring is a mucosal ring located at the squamocolumnar junction within the lower esophageal sphincter region (marked **D** at ~40 cm). It presents with intermittent dysphagia specifically to solids (classically described as "steakhouse syndrome" when a bolus of meat impacts). The barium swallow appearance is a smooth, concentric narrowing. This is the most common benign cause of esophageal dysphagia in adults over 60 and is treated with endoscopic dilatation. The clinical presentation—intermittent dysphagia over months without progressive weight loss—is pathognomonic for Schatzki ring. ## Why each distractor is wrong - **Achalasia with bird-beak appearance and proximal esophageal dilation**: Achalasia presents with progressive dysphagia to both solids and liquids, absent peristalsis on manometry, and failure of LES relaxation. The barium appearance is "bird-beak" or "rat-tail" with marked proximal dilation, not a simple shelf-like narrowing. This patient's presentation is intermittent, not progressive. - **Peptic stricture from chronic GERD with irregular narrowing**: Peptic strictures are typically irregular and long, located in the distal esophagus, and occur in the setting of chronic GERD with documented reflux symptoms. This patient has no mention of heartburn or reflux, and the narrowing is described as smooth and concentric, not irregular. - **Adenocarcinoma of the esophagus with apple-core appearance**: Adenocarcinoma at the gastroesophageal junction presents with progressive dysphagia, weight loss, and an "apple-core" stricture appearance with shouldering. This patient has intermittent dysphagia without weight loss, which is inconsistent with malignancy. **High-Yield:** Schatzki ring = smooth concentric narrowing at GE junction + intermittent dysphagia to solids = treat with dilatation; achalasia = bird-beak + progressive dysphagia to solids AND liquids + manometry shows failure of LES relaxation. [cite: Sutton Radiology 7e Ch 24; Bailey & Love 28e Ch 67]
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