@article{oai:soar-ir.repo.nii.ac.jp:00003882,
 author = {Nagaya,  Tadanobu and Tanaka,  Naoki and Kamijo,  Atsushi and Joshita,  Satoru and Nakazawa,  Koh and Miyabayashi,  Hideharu and Yoneda,  Suguru and Ito,  Tetsuya and Komatsu,  Michiharu and Tanaka,  Eiji and Kitano,  Kiyoshi},
 issue = {15},
 journal = {INTERNAL MEDICINE},
 month = {},
 note = {A 33-year-old Japanese man was referred to our hospital after a huge intrapelvic tumor with bilateral hydronephrosis was found following persistent lumbago. Natural killer/T-cell lymphoma was suspected due to positive immunostaining for CD56, but CHOP therapy was ineffective. Re-evaluation of the tumor cells showed that they were positive for CD99, neuron-specific enolase, and synaptophysin and had a t(11; 22) (q 24; q12) translocation, leading to the revised diagnosis of primitive neuroectodermal tumor (PNET). Systemic chemotherapies and radiation therapy were added to surgical resection, and no recurrence has been detected for 3 years. Taken together, PNET may be considered in adult patients with CD56-positive tumors., Article, INTERNAL MEDICINE. 48(15):1267-1272 (2009)},
 pages = {1267--1272},
 title = {Primitive Neuroectodermal Tumor as a Differential Diagnosis of CD56-Positive Tumors in Adults},
 volume = {48},
 year = {2009}
}