RT Journal Article SR Electronic T1 An Unusual Sinonasal Tumor: Soft Tissue Perineurioma JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP 437 OP 439 DO 10.3174/ajnr.A1284 VO 30 IS 2 A1 Fang, W.S. A1 Emerson, L.L. A1 Hunt, J.P. A1 Salzman, K.L. YR 2009 UL http://www.ajnr.org/content/30/2/437.abstract AB SUMMARY: Soft tissue perineuriomas are an unusual type of peripheral nerve sheath tumors distinct from schwannomas and neurofibromas, with interesting histologic findings. They are not well characterized on radiographic examination. We report this case of a patient with sinonasal perineurioma to help define the imaging and pathologic features of this rare head and neck tumor.