Primary ductal apocrine adenocarcinoma of axilla vs accessory mammary gland carcinoma in axilla – a diagnostic dilemma: case rep

Primary cutaneous ductal apocrine adenocarcinoma (PCDAA) is a rare malignant cutaneous neoplasm usually arising in areas of high apocrine gland density. To date, there have been 40 cases of apocrine adenocarcinoma reported in the literature. Similarly, male breast cancer arising in ectopic axillary breast tissue is also an extremely rare malignant neoplasm that has a high incidence of misdiagnosis. Due to the atypical location, a correct diagnosis is often reached during the later stages of cancer. The number of previous studies on male axillary ectopic breast cancer is extremely low. In the current study, a case of primary cutaneous apocrine carcinoma arising in male axilla is presented, highlighting the diagnostic dilemma between Primary Ductal Apocrine Adenocarcinoma of Axilla and Accessory Mammary Gland Carcinoma in Axilla. Written informed consent was obtained from the patient.