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1996-03-30
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Document 1077
DOCN M9651077
TI Gamma Knife radiosurgery in AIDS-related primary central nervous system
lymphoma.
DT 9505
AU Nicolato A; Gerosa MA; Foroni R; Piovan E; Zampieri PG; Pasoli A; Giri
MG; Iuzzolino P; Ghimenton C; Luzzati R; et al; Department of
Neurosurgery, University Hospital of Verona, Italy.
SO Stereotact Funct Neurosurg. 1995;64 Suppl 1:42-55. Unique Identifier :
AIDSLINE MED/96151255
AB The frequency of AIDS-associated primary central nervous system (PCNS)
lymphoma is rapidly increasing in adults and children. In AIDS-related
PCNS lymphoma, different authors have reported an overall poorer
response rate to conventional radiation compared with immunocompetent
patients. This poorer response consists of a significantly positive,
although transient effect on survival following radiotherapy (XRT), with
a poor toleration for prolonged whole-brain RT (WBR) and with
radiation-induced changes within the normal CNS tissue on autopsy
examinations after a course of XRT. These observations led us to
consider highly focused single-session radiosurgical treatments as a
potentially useful therapeutic modality for AIDS-associated PCNS
lymphomas. A multi-institutional diagnostic and therapeutic protocol for
the evaluation and treatment of AIDS patients with high-risk
intracerebral space-occupying lesions has been developed at the
University Hospital of Verona. Therapy is based on tumor biopsy. Tumors
< or = 3.5 cm in diameter are subjected to Gamma Knife radiosurgery,
whereas tumors < or = 4.5 cm are treated with stereotactic
brachytherapy. At the Department of Neurosurgery, Verona, Italy, Gamma
Knife treatment was performed in 2 cases of deep-seated histologically
verified malignant non-Hodgkin's lymphoma. A short-term
cliniconeuroradiological follow-up (2 months later) showed neurologic
improvement and virtually complete disappearance of the tumor in both
patients. The excellent local control and the well-tolerated
single-session treatment and absence of brain toxicity signs on CT scan
indicate a putative role for Gamma Knife radiosurgery in the treatment
of these patients.
DE Adult Case Report Central Nervous System Neoplasms/ETIOLOGY/*SURGERY
Female Human Lymphoma, AIDS-Related/*SURGERY Male *Radiosurgery
Treatment Outcome JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).