Primary Cutaneous Malignant Melanoma of the Breast: A Case Report

Introduction: The incidence of melanoma has remarkably increased over the last years. It commonly involves the extremities in females and the trunk in males. Cutaneous malignant melanoma (CMM) of the breast accounts for less than 5% of all melanomas. Case Presentation: A 60-year-old man referred with a black pigmented skin lesion (4 × 2 cm) on the periareolar skin in the upper inner quadrant of the right breast without nipple retraction. The patient mentioned that he failed medical follow-up of the lesion, which had been excised for about a year in 2016 as a CMM that resulted in its rapid growth. Examinations revealed a mole (4 cm) on the right areola and also a palpable axillary lymph node. Incisional biopsy reported malignant melanoma. After final confirmation, he underwent a modified mastectomy. The pathology report revealed that nipple and areolae were free of tumor, however, a deep margin and two axillary lymph nodes were involved, which resulted in considered adjuvant radiotherapy. Two months after the surgery, his health condition was normal without any sign of recurrent metastasis. Conclusions: In this case, the modified mastectomy was inevitably done and no recurrence or complication was observed.