Moghrabi A, Friedman H S, McLendon R, Hockenberger B, Tien R D, Halperin E C, Oakes W J
Department of Pediatrics, Duke University Medical Center, Durham, North Carolina 27710.
Med Pediatr Oncol. 1994;22(2):140-3. doi: 10.1002/mpo.2950220216.
Magnetic resonance imaging (MRI) is becoming the method of choice for evaluation of central nervous system tumors. However, the sensitivity of this modality raises concern that new lesions in patients previously diagnosed with a brain tumor may not necessarily represent recurrent disease. We report a patient previously treated with surgery, radiotherapy, and chemotherapy for a medulloblastoma who developed a new lesion in the floor of the fourth ventricle. Histologic review following excision revealed an arteriovenous malformation.
磁共振成像（MRI）正成为评估中枢神经系统肿瘤的首选方法。然而，这种检查方式的敏感性引发了人们的担忧，即先前被诊断患有脑肿瘤的患者出现的新病灶不一定代表疾病复发。我们报告了一名曾接受手术、放疗和化疗治疗的髓母细胞瘤患者，该患者在第四脑室底部出现了一个新病灶。切除术后的组织学检查显示为动静脉畸形。
