Extramammary Paget's Disease (EMPD)

Extramammary Paget's disease is a rare, slow-growing cancer of apocrine-gland-rich skin, typically in the genital or perianal area. It often looks like a stubborn rash or eczema — itching, redness, scale — and is commonly treated as one for years before a biopsy gives the real answer. If that story sounds familiar, no part of it is your fault; this disease is a known master of disguise.

Its edges are indistinct: the cancer routinely extends well beyond the visible rash. That is why margin-controlled surgery earns its keep here — the entire margin is examined microscopically, so the surgery ends where the disease actually ends, not where it appears to. Care in these areas is handled with the discretion and respect it deserves.