%0 Journal Article %T CD7-Positive Diffuse Large B-Cell Lymphoma Presenting as an Intranasal Tumor %A Abe %A Ko %A Enomoto %A Yoshitaka %A Ikeda %A Sho %A Kawaharada %A Yasushi %A Kubota %A Yosuke %A Kume %A Masaaki %A Miura %A Masahito %A Ohyagi %A Hideaki %A Saito %A Ken %A Saito %A Masahiro %A Saito %A Takashi %A Takahashi %A Naoto %A Takahashi %A Satsuki %A Teshima %A Kazuaki %A Zuguchi %A Masashi %A Zuguchi %A Megumi %J - %D 2020 %R https://doi.org/10.1155/2020/1514729 %X We report a case of a 74-year-old man with a cluster of differentiation (CD) 7-positive diffuse large B-cell lymphoma (DLBCL) in the right nasal cavity. Flow cytometry analyses showed CD7 and CD20 positivity in tumor cells. The patient received 6 cycles of R-CHOP plus local radiation therapy because positron emission tomography-computed tomography after R-CHOP revealed an intranasal lesion. The patient achieved complete remission (CR) after radiation therapy. The frequency of CD7-positive DLBCL is rare, and only 11 cases with follow-up of clinical course have been reported thus far. CR or partial response was noted in 8 of 11 cases after receiving rituximab combined with chemotherapy. In total, 9 of 12 cases involved the development of extranodal lesions, which occurred as an intranasal tumor in 3 cases. It is important to examine the clinical features by accumulation of further cases %U https://www.hindawi.com/journals/crihem/2020/1514729/