Mixed Adenoneuroendocrine Carcinoma (MANEC) of the Distal Common Bile Duct Arising from a Choledochal Cyst

Given the concern for biliary pathology, a transabdominal right upper quadrant ultrasound was obtained and demonstrated a contracted gall bladder with no stones or sludge; the common bile duct measured 8 mm. Also noted was a large oval anechoic structure, 5.5 cm in diameter, of uncertain origin and...

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Veröffentlicht in:The American surgeon 2018-02, Vol.84 (2), p.319-321
Hauptverfasser: Siddiqui, Imran, Kirks, Russell C., Sastry, Amit V., Baker, Erin H., Vrochides, Dionisios, Iannitti, David A., Kamionek, Michal, Martinie, John B.
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Sprache:eng
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Zusammenfassung:Given the concern for biliary pathology, a transabdominal right upper quadrant ultrasound was obtained and demonstrated a contracted gall bladder with no stones or sludge; the common bile duct measured 8 mm. Also noted was a large oval anechoic structure, 5.5 cm in diameter, of uncertain origin and separate from the gall bladder. With this abnormal finding, a subsequent CT scan of the abdomen and pelvis revealed a 5.2 x 4.8 cm cystic lesion adjacent to the head of the pancreas containing mural nodules or debris in the anterior wall with associated mild dilatation of the intrahepatic bile ducts. [...]MANEC is a rare tumor, and few case reports of biliary MANEC have been reported.4 These lesions are aggressive, and little is known about their natural course.
ISSN:0003-1348
1555-9823
DOI:10.1177/000313481808400245