Primary malignant melanoma of the breast: A case report without relapse

Abstract Objective This study aimed to report the treatment and outcomes of a patient with primary malignant melanoma of the breast parenchyma using mastectomy as the main treatment. Patient and methods A 67‐year‐old female presented with a palpable lump approximately 2 cm in diameter in the lower inner quadrant of the left breast, and underwent ultrasound guided cutting needle biopsy. Cytological examination identified a malignant melanoma of the breast, and she received treatment with a modified radical mastectomy. Further assessment was carried out using a positron emission tomography/computed tomography, which negated the presence of a primary lesion in either adjacent or distant sites. Results After three years of follow‐up with ultrasonography (USG) and mammography annually and a complete physical examination every six months in the clinic, the patient remained alive with no evidence of local or distant recurrence. Conclusion The surgical management of this case is appropriate according to the available literature up to the present. We recommend BRAF mutation testing and melanocytic marker testing for all patients to ensure the correct focus when selecting biomarker‐based immunotherapy.