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Zenker’s Diverticulum on Barium Swallow: An Imaging Guide to Progressive Dysphagia, Regurgitation, and Halitosis

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  A Case-Based Radiology Review | ScholarGen MediAI Executive Answer Zenker’s diverticulum is a pharyngoesophageal pulsion diverticulum caused by herniation of the mucosa and submucosa through Killian’s dehiscence, a weak area between the thyropharyngeus and cricopharyngeus portions of the inferior pharyngeal constrictor complex. The characteristic imaging finding is a posterior, contrast-filled pouch arising near the pharyngoesophageal junction, typically around the C5–C6 level. A lateral barium esophagram is particularly useful for demonstrating the pouch and its relationship to the cervical esophagus. Recognizing this pattern is important because retained food, progressive dysphagia, regurgitation, and aspiration-related complications may persist without appropriate treatment. 1. Why This Case Matters Progressive dysphagia in an older adult deserves more than a routine evaluation for gastroesophageal reflux or an esophageal motility disorder. When difficulty swallowing is accomp...
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Infantile Hypertrophic Pyloric Stenosis: The Caterpillar Sign on Abdominal X-Ray

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  Edited by ScholarGen MediAI Team Recognizing Gastric Hyperperistalsis, Understanding Ultrasound Diagnostic Criteria, and Identifying Early Gastric Outlet Obstruction in Infants Introduction: When an Infant's Vomiting Reveals a Mechanical Obstruction Progressively worsening vomiting in a young infant should never be dismissed as simple gastroesophageal reflux without considering an underlying structural abnormality. One important diagnosis is infantile hypertrophic pyloric stenosis (IHPS) , a condition characterized by progressive thickening of the pyloric muscle, narrowing of the gastric outlet, and impaired passage of gastric contents into the duodenum. The clinical presentation can be deceptively straightforward: an otherwise healthy infant develops increasingly frequent, forceful, nonbilious vomiting after feeding. However, as the obstruction progresses, the infant may develop dehydration, inadequate weight gain, and potentially significant electrolyte and acid-base disturbanc...
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Falciform Ligament Sign on Abdominal Imaging: A Key Clue to Pneumoperitoneum

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  A subtle radiographic sign can reveal free intraperitoneal air and signal a life-threatening gastrointestinal perforation. Executive Answer The falciform ligament sign is an imaging finding associated with pneumoperitoneum, or free air within the peritoneal cavity. When intraperitoneal air outlines the falciform ligament, the ligament may appear as a vertically oriented soft-tissue band on abdominal radiographs or CT. Recognizing this sign is particularly important in patients with acute abdominal pain, hypotension, and peritoneal tenderness. In the case presented here, the finding prompted recognition of pneumoperitoneum associated with a perforated duodenal ulcer, confirmed at emergency laparotomy. Why This Case Matters Pneumoperitoneum is an important radiologic warning sign because it may indicate gastrointestinal perforation requiring urgent intervention. The falciform ligament sign illustrates how normal anatomy can become conspicuous when surrounded by abnormal gas. Rather...
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Button Magnets in the Nasal Cavity: A Pediatric Radiology Case of Septal Compression and Urgent Removal

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  A radiographic diagnosis with time-sensitive consequences Executive Answer Two small, disk-shaped metallic objects seen at the same level on opposite sides of the nasal septum in a child with epistaxis and severe nasal pain should raise immediate concern for paired magnets. When magnets attract across the septum, sustained pressure can injure the mucosa and perichondrium, leading to cartilage exposure, necrosis, and septal perforation. This is an urgent otolaryngologic problem: prompt removal and careful assessment of septal injury are essential. Clinical Scenario An 11-year-old boy presented to the emergency department approximately six hours after inserting button magnets into both nostrils. He was unable to remove them and reported severe nasal pain and epistaxis. Nasal examination showed mucus and crusted blood. Facial radiographs demonstrated two disk-shaped foreign bodies at the same level, positioned across the nasal septum. The initial emergency department removal attempt...
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