Cumulative incidence of radiation-induced cavernomas in long-term survivors of medulloblastoma.

Object: The goal of this study was to determine the incidence of radiation-induced cavernomas in children treated for medulloblastoma.

Methods: A retrospective chart and film review was performed for all patients treated for medulloblastoma at the Insitute for Neurology and Neurosurgery/Beth Israel Medical Center between August 1996 and the present. The clinical and radiographic histories of pediatric patients (ages 3-21 years at diagnosis) with a histologically confirmed diagnosis of medulloblastoma who received craniospinal radiation therapy were reviewed.

Celiac artery compression by the median arcuate ligament: a pitfall of end-expiratory MR imaging.

Purpose: To measure the prevalence and degree of celiac artery compression during breath-hold imaging at end inspiration and end expiration in patients referred to undergo magnetic resonance (MR) imaging of the abdomen for reasons unrelated to intestinal ischemia.

Materials And Methods: A series of 100 patients underwent routine MR imaging of the upper abdomen at 1.5 T; imaging included multiple dynamic contrast-enhanced fat-suppressed transverse three-dimensional spoiled gradient-echo acquisitions (3.