title: Central nervous system lymphoma: histologic types and CT appearance.
abstract: The distribution of histologic types of lymphoma according to the proposed working formulation was determined for 55 patients with primary central nervous system (CNS) non-Hodgkin lymphoma. Fifty-five percent of these patients had diffuse large-cell histologic features. When the relationship between histologic type and computed tomographic (CT) appearance was analyzed, the following trends were noted: A greater percentage of mixed cell tumors were multiple when compared with other types; noncleaved small-cell tumors were more commonly located in the central gray matter or corpus callosum than were other types; all immunoblastic tumors were enhanced homogeneously, unlike other types; and smaller tumors appeared to be associated with an increased histologic grade. Eleven patients had CT confirmation of a CNS recurrence; in eight patients, the recurrent tumor was in a different location than the original lesion. Eleven patients had associated intraocular lymphoma, and four were immunosuppressed.
authors.affiliation: Department of Diagnostic Radiology, Mayo Clinic, Rochester, MN 55905.
authors.forename: C R
authors.initials: CR
authors.lastname: Jack
authors.forename: B P
authors.initials: BP
authors.lastname: O'Neill
authors.forename: P M
authors.initials: PM
authors.lastname: Banks
authors.forename: D F
authors.initials: DF
authors.lastname: Reese
mesh_terms: D001932:Brain Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D003937:Diagnosis, Differential; D005134:Eye Neoplasms / Q000000981:diagnostic imaging; D006801:Humans; D007165:Immunosuppression Therapy / Q000009:adverse effects; D015451:Leukemia, Lymphocytic, Chronic, B-Cell / Q000000981:diagnostic imaging / Q000473:pathology; D008228:Lymphoma, Non-Hodgkin / Q000000981:diagnostic imaging* / Q000473:pathology; D008279:Magnetic Resonance Imaging; D009364:Neoplasm Recurrence, Local; D012307:Risk Factors; D014057:Tomography, X-Ray Computed