Cutaneous Scalp Metastasis From Mammary Ductal Carcinoma.

The clinical progression of metastatic breast cancer may be indicated by dermatologic manifestations of the internal malignancy. Although uncommon, underlying malignancies can metastasize to the scalp and resemble various common dermatological lesions. We report the case of a 62-year-old female patient with a history of mammary ductal carcinoma who presented with a metastatic papule on the posterior mid-parietal scalp. Given that the cutaneous expression of internal malignancies is rare, it is imperative for dermatologists to conduct comprehensive patient histories and engage in multidisciplinary collaboration to optimize treatment strategies and improve patient prognosis.