CYLD cutaneous syndrome (CCS) typically manifests in the second or third decade with the appearance of multiple skin tumors including cylindromas, spiradenomas, trichoepitheliomas, and rarely, membranous basal cell adenoma of the salivary gland. The first tumor typically develops at puberty and tumors progressively accumulate through adulthood. Females often have more tumors than males. Tumors typically arise on the scalp and face but can also arise on the torso and sun-protected sites, such as the genital and axillary skin. A minority of individuals develop salivary gland tumors. Rarely, pulmonary cylindromas can develop in large airways and compromise breathing. Although the tumors are usually benign, malignant transformation is recognized. [from GeneReviews]