颅内肿瘤是小儿时期常见的颅内占位性疾患，也是小儿时期常见的恶性肿瘤之一。由于临床表现多种多样及早期症状不典型，极易误诊为其它疾病，从而延误治疗导致严重后果。国内有文献报告误诊率为45％左右[1，2]。近几年随头颅CT的普遍应用，使其诊断率明显提高，但早期误诊者仍 Intracranial tumors are common intracranial space-occupying disorders in childhood and are also one of the most common malignancies in childhood. Due to the variety of clinical manifestations and early symptoms are not typical, easily misdiagnosed as other diseases, thus delaying the treatment lead to serious consequences. Domestic literature reports misdiagnosis rate of about 45% [1,2]. In recent years, with the universal application of cranial CT, the diagnosis rate was significantly improved, but the early misdiagnosis