Primary Ki-1 lymphoma in the central nervous system.
Large cell anaplastic malignant lymphoma with Ki-1 (CD30) antigen is a new entity among human non-Hodgkin's malignant lymphomas according Updated Kiel Classification and is also a very rare subtype in primary central nervous system (CNS) malignant lymphomas. The precise clinical characteristics and the significance of Ki-1 antigen have yet to be clarified. The authors herein report a case of Ki-1 positive primary T-cell CNS malignant lymphoma. A 49-year-old man presented with multiple mass lesions in the brain on MRI. Immunohistochemical investigations of biopsy specimens from the superior medullary velum revealed a large cell anaplastic T-cell lymphoma positive for Ki-1 antigen. After administering extensive chemo-radiotherapy, the patient has survived for more than 42 months after the onset of symptoms.
Kawamura
T
T
Department of Neurosurgery, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582 Japan.
Inamura
T
T
Ikezaki
K
K
Miyazono
M
M
Ishihara
S
S
Fukui
M
M
D002528:Cerebellar Neoplasms / Q000737:chemistry* / Q000473:pathology* / Q000532:radiotherapy; D006801:Humans; D017730:Ki-1 Antigen / Q000032:analysis*; D008223:Lymphoma / Q000737:chemistry* / Q000473:pathology* / Q000532:radiotherapy; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged
D017730:Ki-1 Antigen