Anaplastic Carcinoma Possibly Arising from a Heterotopic Pancreas

Yasushi Adachi; Hiroaki Mita; Hideaki Takahashi; Kimishige Akino; Takefumi Kikuchi; Yoshifumi Ishii; Takao Endo

doi:10.2169/internalmedicine.54.5043

CASE REPORTS

Anaplastic Carcinoma Possibly Arising from a Heterotopic Pancreas

Yasushi Adachi, Hiroaki Mita, Hideaki Takahashi, Kimishige Akino, Takefumi Kikuchi, Yoshifumi Ishii, Takao Endo

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Keywords: anaplastic carcinoma, cancer of unknown primary, ectopic pancreas, pancreatic cancer

JOURNAL OPEN ACCESS

2015 Volume 54 Issue 23 Pages 3017-3022

DOI https://doi.org/10.2169/internalmedicine.54.5043

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Abstract

Anaplastic carcinoma is a rare pancreatic cancer, and the malignant transformation of a heterotopic pancreas is also rare. We herein report a case of an elderly woman with a mass of unknown origin in the abdominal cavity. Computed tomography identified the extent of the tumor but not the organ of origin. The abdominal tumor eventually metastasized to the liver and lung. An autopsy and immunohistochemical examination revealed an anaplastic carcinoma possibly originating in an ectopic pancreas.

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