Sclerosing sweat duct carcinoma of the lower extremity treated with Mohs micrographic surgery

Large Indurated Plaque on the Chest With Ulceration and Necrosis

“…4 Although sclerosing sweat duct carcinoma is characterized by infiltrating cords in sclerotic dermis, the cells were not arranged in ductlike structures 1-to 2-cell layers thick, excluding this diagnosis. 5 Carcinoma en cuirasse-named for skin involvement that appears similar to the metal breastplate of a cuirassier-is a rare form of cutaneous metastasis that typically presents with extensive infiltrative plaques resulting in fibrosis of the skin and subcutaneous tissue. 6,7 Carcinoma en cuirasse most commonly metastasizes from the breast but also may represent metastases from the lungs, gastrointestinal tract, or genitourinary systems.…”