Arıkan, Osman KürşatMuluk, Nuray BayarAtasoy, Pınar2020-06-252020-06-252010closedAccess1049-22751536-3732https://doi.org/10.1097/SCS.0b013e3181cfe9dbhttps://hdl.handle.net/20.500.12587/4784Primary tumors that originated from the pterygopalatine fossa are seen rarely. In this paper, the case of a 69-year-old woman who complained of a 2-month history of headache, extending to the left part of the face, teeth, and shoulder, is reported. She had undergone right total mastectomy and axillar dissection of a spindle cell-type metaplastic carcinoma of the breast 1 year ago. Computed tomographic and magnetic resonance images showed a mass originating from the pterygopalatine fossa. Pathologic examination of the biopsy specimen of the mass revealed a nasal-type extranodal natural killer/T-cell lymphoma with CD45(+) and intense CD56(+) staining. Our case shows that a nasal-type extranodal natural killer/T-cell lymphoma should be thought in mind for the differential diagnosis of primary tumors of the pterygopalatine fossa.eninfo:eu-repo/semantics/closedAccessNasal-type extranodal natural killer (NK)/T-cell lymphomapterygopalatine fossaintense CD56(+) stainingArticle21244444710.1097/SCS.0b013e3181cfe9db2-s2.0-7795287948220216452Q3WOS:000276073200036Q3