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Updated: Sep 24, 2025
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Dissection and Flat-mounting of the Threespine Stickleback Branchial Skeleton
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Fish Bone Descending in the Mediastinum.
Kuniyo Sueyoshi1, Kosuke Otsubo1, Shinya Hirota1
1Department of Thoracic Surgery, St. Luke's International Hospital, Tokyo, Japan.
Summary
A rare case of fish bone ingestion is presented, where the foreign body migrated through the hypopharynx into the mediastinum. This unique trajectory highlights unusual migration patterns of ingested sharp foreign bodies.
Area of Science:
- Medicine
- Radiology
- Gastroenterology
Background:
- Ingested sharp foreign bodies can migrate extraluminally, but rarely follow unusual pathways.
- Migration into adjacent organs like the pharynx, lungs, or liver is uncommon.
Observation:
- A patient presented with a fish bone foreign body.
- Computed tomography (CT) revealed the fish bone in the aortopulmonary space within the left mediastinum.
- Peri-esophageal pneumomediastinum was also noted on CT imaging.
Findings:
- Endoscopic examination showed mucosal lacerations in the left hypopharynx.
- No injury to the esophageal mucosa was detected.
- The fish bone's unique migration path was determined to be through the laryngopharynx into the mediastinum.
Implications:
- This case demonstrates an atypical migration route for ingested sharp foreign bodies.
- Understanding such unique trajectories is crucial for accurate diagnosis and management.
- It emphasizes the importance of thorough imaging and endoscopic evaluation in suspected foreign body ingestion.
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