Intrathecal thiotepa: reappraisal of an established therapy

Journal of Pediatric Hematology/oncology
Paul G FisherDavid N Korones

Abstract

Intrathecal thiotepa is recommended as a treatment of leptomeningeal metastases (LM) in children, although published data to support this approach are limited. The authors sought to determine the efficacy of intrathecal thiotepa for pediatric LM. The authors reviewed all children treated with intrathecal thiotepa for LM at two tertiary children's hospitals, assessing outcome by cerebrospinal fluid cytology, neuroimaging, neurologic examination, and overall survival rate. Fifteen children with LM evidenced by malignant cells in the cerebrospinal fluid (mean age 7.3 years; five medulloblastoma, one anaplastic astrocytoma, one glioblastoma, one retinoblastoma, one neuroblastoma, two rhabdomyosarcoma, one non-Hodgkin lymphoma, two acute lymphoblastic leukemia, and one acute myelogenous leukemia) were treated with intrathecal thiotepa at 5 to 11.5 mg/m2 per dose for two to seven doses. Five children received concomitant craniospinal irradiation; 12 received simultaneous systemic or other intrathecal chemotherapy, or both. Four children experienced clearance of malignant cells from the spinal fluid, but this response was sustained in only two. All four children with cytologic response received concurrent radiotherapy, chemotherapy, o...Continue Reading

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Related Concepts

Teens
Cerebrospinal Fluid
Combined Modality Therapy
Mixed Gliomas
Intrathecal Injection
Reticulosarcoma
Magnetization Transfer Contrast Imaging
Intracranial Meningeal Neoplasms
Neoplasm Recurrence, Local
TNM Staging System

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