Spontaneous regression of malignant lymphoma of the lumbar spine.
Spontaneous regression of diffuse B-cell type lymphoma of the lumbar vertebra is reported. A 61-year-old woman experienced spontaneous disappearance of a large psoas mass associated with an infiltrating process of the lumbar vertebrae. The biopsy of the residual change after spontaneous regression revealed reactive foamy histiocytes and small lymphocytes with no atypia. The lesion recurred 7 months later with no systemic treatment in the interim, when the diagnosis of lymphoma was finally made. Spontaneous regression may be related to potentiation of the host immune response, which affects tumor growth.
Ohgi
Shie
S
Department of Radiology, Iwate Medical University School of Medicine, 19-1 Uchimaru, Morioka 020-8505 Japan.
Ehara
Shigeru
S
Satoh
Takashi
T
Kato
Sadafumi
S
Shimosegawa
Kenji
K
Ishida
Yoji
Y
D005260:Female; D006801:Humans; D008159:Lumbar Vertebrae / Q000473:pathology; D016393:Lymphoma, B-Cell / Q000175:diagnosis* / Q000473:pathology; D016403:Lymphoma, Large B-Cell, Diffuse / Q000175:diagnosis* / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D012008:Recurrence; D012075:Remission, Spontaneous; D013125:Spinal Neoplasms / Q000175:diagnosis* / Q000473:pathology