Adenocarcinoma [Disease/Finding] Paget Disease, Extramammary [Disease/Finding] A rare cutaneous neoplasm that occurs in the elderly. It develops more frequently in women and predominantly involves apocrine gland-bearing areas, especially the vulva, scrotum, and perianal areas. The lesions develop as erythematous scaly patches that progress to crusted, pruritic, erythematous plaques. The clinical differential diagnosis includes squamous cell carcinoma in situ and superficial fungal infection. It is generally thought to be an adenocarcinoma of the epidermis, from which it extends into the contiguous epithelium of hair follicles and eccrine sweat ducts. (DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1478) Paget Disease, Extramammary Paget's Disease, Extramammary Paget Disease, Extra-Mammary Extra-Mammary Paget's Disease C0030186 C4732 Paget Disease, Extramammary 1024557 Paget's Disease, Extra-Mammary Extra-Mammary Paget Disease D010145 71447003 Paget Disease Extramammary Extramammary Paget Disease N0000002277 M0015741 Extramammary Paget's Disease Neoplasms, Ductal, Lobular, and Medullary [Disease/Finding]