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Malignant melanoma presenting as a mass obstructing the common bile duct
The Journal of Computed Tomography
|April 1, 1985
Summary
Malignant melanoma obstructing the common bile duct is rare. This case highlights the importance of considering melanoma in imaging diagnoses, even without other tumors present.
Area of Science:
- Gastroenterology
- Oncology
- Radiology
Background:
- Common bile duct (CBD) obstructions are typically caused by gallstones or pancreatic cancer.
- Malignant melanoma is a rare cause of biliary obstruction.
Observation:
- A patient presented with an obstructing mass in the common bile duct.
- Computed tomography (CT) revealed the mass, with no other tumors identified in the body.
Findings:
- Pathologic examination confirmed the CBD mass to be malignant melanoma.
- This presentation of isolated malignant melanoma in the CBD is unprecedented.
Implications:
- Malignant melanoma should be included in the differential diagnosis for common bile duct masses identified on CT scans.
- This case expands the understanding of extranodal melanoma presentation.