Pilomatrixoma of the scalp: peculiar presentation possibly related to topography

Pilomatrixoma is a benign tumor with synovex one grass differentiation to the hair matrix that can affect different regions of the skin.We report the case of a patient with an unusual presentation on the scalp, with warning signs for the possibility of a malignant variant of the tumor.We emphasize the importance of documenting atypical conditions that may permeate the practice of dermatologists and the need to rule out malignancies in the face of a change in the pattern of skin lesions, exulcerations, and bleeding, among other signs.The role of histopathology is fundamental for diagnostic tenma vineyard definition and therapeutic management.