A<unk>  is a benign nerve-sheath tumor in the peripheral nervous system. In 90% of cases, they are found as stand-alone tumors (solitary<unk> , solitary nerve sheath tumor or sporadic<unk> , while the remainder are found in persons with<unk> tosis type I <unk> 1), an autosomal-dominant genetically inherited disease. They can result in a range of symptoms from physical disfiguration and pain to cognitive disability.<unk> s arise from nonmyelinating-type Schwann cells that exhibit biallelic inactivation of the<unk> 1 gene that codes for the protein<unk> n. This protein is responsible for regulating the RAS-mediated cell growth signaling pathway. In contrast to schwannomas, another type of tumor arising from Schwann cells,<unk> s incorporate many additional types of cells and structural elements in addition to Schwann cells, making it difficult to identify and understand all the mechanisms through which they originate and develop.
Neurofibroma
Palisaded encapsulated neuroma
Neuroma
Hemangioblastoma
Ameloblastoma
Ganglioneuroma
Ganglion cyst
Brenner tumour