MedGen

A benign skin adnexal tumor of eccrine differentiation. [from HPO]

An adenoid cystic carcinoma arising from the salivary gland. It is characterized by the presence of epithelial and myoepithelial cells forming tubular, cribriform, and solid patterns. It usually presents as a slow growing mass. Patients may experience pain because of the tumor propensity for perineural invasion. The tumor may follow an aggressive clinical course with recurrences and mestastases to distant sites including lungs, bones, brain, and liver. [from NCI]

A rare neoplastic disease with the presence of a neoplasm located in the parotid, sublingual, submandibular and/or minor salivary glands. The disease presents with a wide spectrum of clinical features depending on the location, size and type of salivary gland involved, ranging from clinically asymptomatic, slow-growing, painless mass(es), that may or may not be fixed to underlying skin or muscles, to rapidly growing mass(es) associated with pain, facial weakness/nerve palsy, dysphagia, palatal/parapharyngeal fullness, nasal obstruction/bleeding, voice hoarseness/change, trismus, palate bone erosion, telangiectasia, mucosal/skin ulceration and/or cervical adenopathy. [from SNOMEDCT_US]