Primary Central Nervous System Natural Killer Cell Lymphoma in a Chinese Woman with Atypical 11 C-Choline Positron Emission Tomography and Magnetic Resonance Spectrometry Findings

Primary central nervous system extranodal nasal‐type natural killer/T‐cell lymphoma with CD20 expression

“…Thus, our case also represented an extremely rare case of PCNS ENKTCL. Only 10 cases of PCNS ENKTCL are reported in the literature . Among the 10 cases, there were seven males and three females, similar to the male predominance of ENKTCL, with a median age of 43.5 years (range 25 to 68 years), younger than those patients with ENKTCL (median age, 53 years).…”

“…Among PCNSL, 98% are comprised of B‐cell lymphomas, and only 2% are T‐cell lymphomas (TCL) . PCNS extranodal natural killer/T‐cell lymphoma (ENKTCL) is exceedingly rare, to the best of our knowledge, with only 10 cases reported in the literature …”

Clinicopathological analysis of primary central nervous system NK/T cell lymphoma: rare and localized aggressive tumour among extranasal NK/T cell tumours

“…A total of 10 cases were collected from case reports in the English language literature (Table ) and analysed . There were nine IC cases and one IS case that was infected with HIV.…”

“…according to the 2008 World Health Organization (WHO) classification . Moreover, published case reports were reviewed, and 10 additional cases were selected for further analysis . The clinical and pathological information was obtained from a review of the papers.…”

“…2 Moreover, published case reports were reviewed, and 10 additional cases were selected for further analysis. [4][5][6][7][8][9][10][11][12][13] The clinical and pathological information was obtained from a review of the papers. A total of 51 cutaneous and eight GI tract NK/T cell lymphoma cases enrolled in previous reports were used for comparison after excluding chronic active EBV infection (CAEBV) and immunosuppressed (IS) cases.…”