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Showing posts with the label small bowel obstruction

Pneumoperitoneum on X-ray and CT: When a Small Free-Air Finding Becomes a Major Clinical Risk

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Edited by ScholarGen MediAI Team Acute Abdominal Pain, Free Intraperitoneal Air, Small-Bowel Dilatation, and the Role of AI in Preventing Diagnostic Delay A man in his early 50s developed acute abdominal pain and abdominal distension beginning the previous evening. The initial abdominal imaging revealed something that can appear deceptively simple: free intraperitoneal air beneath the diaphragm. But this was not simply an abnormal black crescent on an X-ray. The patient had dilated small-bowel loops with a ladder-like configuration, and surgery subsequently confirmed a perforated peptic ulcer. He recovered well after surgery. The real clinical lesson is therefore broader than the diagnosis of pneumoperitoneum. The critical question is not simply: “Is there free air?” It is: “Why is the free air there, where did the perforation occur, what complications are already present, and how quickly must source control be achieved?” This distinction matters because diagnostic delay in perforated ...

Swirl Sign After Roux-en-Y Gastric Bypass: CT Recognition of Internal Hernia and Small-Bowel Volvulus

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A radiologic approach to a potentially life-threatening postoperative complication By Dr. SB Lee Executive Answer In a patient with previous Roux-en-Y gastric bypass who presents with acute abdominal pain, nausea, and bilious vomiting, a mesenteric swirl sign on CT should immediately raise concern for internal hernia with small-bowel obstruction and possible volvulus . In this case, dilated distal small-bowel loops, proximal decompression, and twisting of bowel and mesenteric vessels were associated with herniation through a mesenteric defect near the jejunojejunostomy. Exploratory laparoscopy confirmed an internal hernia, which was reduced and repaired. The key radiologic lesson is that altered postoperative anatomy should not obscure recognition of abnormal bowel configuration and mesenteric vascular rotation. Why This Case Matters Internal hernia is an important late complication of Roux-en-Y gastric bypass (RYGB). Unlike an external hernia, there may be no obvious abdominal wall ab...

Closed-Loop Small Bowel Obstruction from Internal Hernia: CT Diagnosis That Saves Lives (Radiology Deep Dive)

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  Introduction: A Subtle Emergency Hidden in Plain Sight A 46-year-old woman arrives at the emergency department with sudden epigastric pain, nausea, and vomiting . Her history includes a  prior sleeve gastrectomy —a detail that should immediately raise suspicion among experienced clinicians. At first glance, this may resemble a routine gastrointestinal complaint. But beneath these symptoms lies a potentially fatal condition: 👉 Closed-loop small bowel obstruction (SBO) caused by an internal hernia This is not just another case of bowel obstruction. It is a time-sensitive surgical emergency , where delayed diagnosis can rapidly progress to bowel ischemia, necrosis, and death . In this article, we break down the pathophysiology, radiology interpretation, CT imaging findings, and emergency diagnosis workflow —optimized for both clinical excellence and SEO performance . What Is Closed-Loop Small Bowel Obstruction? Definition Closed-loop SBO occurs when a segment of bowel is occlu...