extraneural perineurioma https://www.malacards.org/card/extraneural_perineurioma NCIT:C6912 Extraneural perineurioma is a rare tumor of cranial and spinal nerves arising from peripheral nerve sheet and composed exclusively or predominantly of cells showing perineurial differentiation. It presents as a well-circumscribed, rarely encapsulated mass, not associated with a recognizable nerve, most commonly arising in the dermis and subcutis of the extremities or trunk, or, rarely, in deep soft tissue or skin (e.g., in the stomach, kidney, pancreas, maxillary sinus, mandible, bronchial tree and the face). The clinical presentation depends on the localization. SCTID:768926005 UMLS:C4708595 soft tissue perineurioma GARD:0019730 MONDO:0015031 MEDGEN:1643216 icd11.foundation:691853283 Orphanet:100002 perineurioma