[A case of apocrine adenocarcinoma suspected as an axillary lymph node metastasis from cecal cancer]

The patient was a 69-year-old male. He had a 2-year history of subcutaneous tumor in the left axilla. Biopsy of the tumor showed the features of metastatic adenocarcinoma. FDG PET to check the primary lesion revealed the collection of an ileocecal junction and left axilla. After CT scan and colonoscopy, we diagnosed cecal cancer and metastasis of the axillary lymph nodes from it. He underwent ileocecal resection and a wide local resection of the axillary tumor. Histopathological examination showed the axillary tumor was different from the cecal cancer. Axillary tumor was diagnosed not as metastasis of axillary lymph nodes from cecal cancer but apocrine adenocarcinoma.