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Updated: Aug 13, 2026
07:41
Quantification of Levator Ani Hiatus Enlargement by Magnetic Resonance Imaging in Males and Females with Pelvic Organ Prolapse
Published on: April 17, 2019
Computed tomographic appearance of internal herniation through the sigmoid mesocolon
Ming-Shiang Yang1, Da-Ming Yeh, Song-Shei Lin
1Department of Diagnostic Radiology, Chung-Shan Medical University Hospital, Taichung, Taiwan, ROC.
Journal of the Chinese Medical Association : JCMA
|April 27, 2005
Summary
Internal herniation of the ileum through the sigmoid mesocolon is a rare condition. A CT scan revealed a characteristic "bird-beak" sign, aiding diagnosis in a patient with acute abdominal pain.
Area of Science:
- Gastroenterology
- Radiology
- Surgical Pathology
Background:
- Internal herniation, particularly through the sigmoid mesocolon, is an uncommon cause of bowel obstruction.
- Prompt diagnosis is crucial for effective management and prevention of complications.
Observation:
- A 66-year-old male presented with acute lower abdominal pain and leukocytosis.
- Computed tomography (CT) imaging demonstrated a thickened ileal loop with a "bird-beak" morphology in the pelvis.
- The affected loop was positioned medially, adjacent to an effaced sigmoid colon.
Findings:
- The CT findings were highly suggestive of internal herniation of the ileum through the sigmoid mesocolon.
- Surgical confirmation of internal herniation was obtained.
Implications:
- This case highlights the importance of recognizing specific CT imaging features for diagnosing rare internal herniations.
- Early identification via advanced imaging like CT can guide timely surgical intervention.
- Understanding rare anatomical variations is key in diagnosing complex abdominal pathologies.
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