Cancer originating in the skin and its appendages has received due attention in dermatologic literature, and the pertinent facts are well known. A type of cutaneous cancer which has received scant mention is the metastatic form, in cases of which metastases from tumors in other organs result from circulating emboli or contiguous implantation from lesions which are directly under the integument. In this communication we shall describe a rare example of extension into, and involvement of, the skin from a mammary cancer.
The skin may be involved by mere extension of underlying cancer, and ulceration and papillary tumors may result; such lesions are usually easily recognized. Another common type of carcinomatous metastasis results in a single or in multiple lenticular nodes occurring in or on the skin and may offer considerable difficulty in diagnosis unless a biopsy is made.
Carcinoma of the breast is the condition which most
FREEMAN CD, LYNCH FW. CARCINOMA OF THE BREAST WITH PECULIAR CUTANEOUS METASTASESREPORT OF A CASE. Arch Derm Syphilol. 1937;35(4):643–652. doi:10.1001/archderm.1937.01470220083007
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