Cancer and Skin Lesions

Cutaneous adnexal neoplasms are tumors arising from the skin's appendageal structures — sweat glands, hair follicles, and sebaceous glands — and range from benign growths like trichoepitheliomas and pilomatricomas to malignant conditions such as extramammary Paget's disease, which mimics inflammatory skin disorders and is often diagnosed late. Understanding these neoplasms requires tracing their molecular origins, including mutations in genes like the cylindromatosis gene, which predispose individuals to multiple tumors and reveal how dysregulated signaling drives abnormal appendageal differentiation. Accurate diagnosis depends heavily on immunohistochemistry, which helps distinguish tumor subtypes and identify markers of malignancy, while surgical techniques like Mohs micrographic surgery aim to remove tumors with precise margin control and minimal tissue loss. Active research is working to clarify the relationship between specific molecular alterations and clinical behavior, and to determine how often adnexal tumors signal underlying systemic syndromes that warrant broader genetic evaluation.

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Keywords

Extramammary Paget's DiseaseAdnexal NeoplasmsPaget's DiseaseCylindromatosis GeneMohs Micrographic SurgeryImmunohistochemistry