A case of apocrine sweat gland carcinoma

Cytologic features of the metastatic lesion

Abstract

An 83-year-old male was diagnosed with apocrine sweat gland carcinoma in the right axillary region. After the first operation, a metastatic lesion near the primary site was noticed and a second operation was performed. Cytological examination showed tumor clusters arranged in papillary or sheet-like pattern. Some of the tumor cells had abundant eosinophilic cytoplasm with Orange G-stained coarse granules and were positive for GCDFP-15 and B 72.3 immunohistochemically.
In conclusion, cytological features of the metastatic lesion retain the characteristic cytological appearance of apocrine sweat glands, which enabled a diagnosis of carcinoma of apocrine sweat gland origin.