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Emphysematous Cholecystitis: When a Small Pocket of Gallbladder Wall Gas Becomes a Surgical Emergency

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  Clinical Hook A 76-year-old man presents to the emergency department with right upper quadrant abdominal pain. At first glance, this sounds like one of the most familiar presentations in abdominal emergency medicine: acute cholecystitis. But the CT tells a more important story. Along the gallbladder wall are small, unmistakably abnormal foci of gas. There is surrounding inflammatory change, and gallstones are present. That tiny amount of gas is not an incidental detail. It changes the diagnosis from an ordinary inflammatory gallbladder disorder to emphysematous cholecystitis , an aggressive infection in which ischemic tissue and gas-producing organisms can combine to produce necrosis, perforation, peritonitis, and sepsis. The key lesson is deceptively simple: When gas is identified around the gallbladder, do not stop at identifying the gas. Determine exactly where it is. Gas confined to the lumen has a different differential diagnosis from gas embedded within the gallbladder wall...
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Ectopic Lingual Thyroid on MRI: Diagnosis, Imaging Features, and Management

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Clinical Hook A 22-year-old woman presents with a persistent sensation of something being stuck in her throat. The symptom is nonspecific. A globus sensation can arise from gastroesophageal reflux, anxiety, pharyngeal irritation, muscular dysfunction, inflammatory disease, or a structural lesion. In a young patient, the initial clinical impression may therefore be reassuring. But MRI reveals something unexpected. At the midline tongue base, centered near the foramen cecum, there is a well-defined 12-mm mass whose imaging characteristics resemble thyroid tissue. A second 9-mm midline lesion is present more inferiorly. Most importantly, the thyroid gland is not identified in its expected cervical position. The apparent “mass” is not simply another head-and-neck lesion. It is ectopic thyroid tissue. This distinction matters because the lesion may represent the patient's only functioning thyroid tissue. Removing it without confirming the location and functional status of the normal thy...
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