Partial biliary obstruction due to adenomyoma of the terminal common bile duct

A patient diagnosed with histiocytic lymphoma presented with abnormal liver function studies, prompting a hepatobiliary scintigraphy that indicated partial distal common bile duct obstruction. Following the patient's death, an autopsy identified an adenomyoma in the terminal common bile duct as the cause of the markedly narrowed lumen and subsequent biliary obstruction. This case report highlights a rare anatomical occurrence where an adenomyomatous lesion within the extrahepatic bile duct led to significant clinical complications. Relevance to endometriosis: The paper discusses adenomyoma, which is composed of endometrial-like glands and stroma, but explicitly states it does not involve endometriosis or adenomyosis; it was included in the corpus via a keyword match in the upstream search index.

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