A 76-year-old woman presented with a poorly circumscribed, blue-purple nodule with prominent bright-red branching vessels on her left nipple (Fig 1). Clinically, the main differential diagnosis was pigmented basal cell carcinoma, melanoma, and hemorrhagic metastasis of unknown internal malignancy. Regarding the lesions history, the patient reported on the development of the nodule approximately 2 weeks after an accidental fall 2 months before. Based on the given history, posttraumatic hematoma was included in the differential diagnosis and the patient was referred for biopsy.
