Cutaneous metastasis as a primary presentation of occult breast cancer, masquerading as a small seborrhoeic keratosis

Although rare, cutaneous metastases may be the initial presentation of an undetected primary malignancy. Among internal malignancies, breast carcinoma is the most frequent solid tumor to cause cutaneous metastases, occurring in a small minority of breast cancer patients, at a rate of approximately 2.5% per primary tumor. Clinically, the manifestations of cutaneous metastatic breast cancer can vary and may be quite subtle. This may include solitary or multiple skin papules, nodules with cutaneous discoloration or textural changes, and can mimic benign skin lesions.
Source: Journal of the American Academy of Dermatology - Category: Dermatology Source Type: research