Saunders J E, Kwartler J A, Wolf H K, Brackmann D E, McElveen J T
Department of Surgery, Duke University Medical Center, Durham, NC 27710.
Laryngoscope. 1991 Oct;101(10):1031-7. doi: 10.1288/00005537-199110000-00001.
Intracranial lipomas are rare tumors which may occur in the cerebellopontine angle (CPA) or internal auditory canal (IAC). Although seemingly innocuous in other parts of the body, lipomas within the CPA and IAC often involve the surrounding cranial nerves, making attempts at hearing conservation largely unsuccessful. In an attempt to differentiate the IAC lipoma from the more commonly found acoustic schwannoma, the preoperative imaging studies (magnetic resonance and computerized tomography) on five previously unreported cases of IAC lipomas were evaluated. Based on these studies, features were determined that may allow the surgeon to diagnose IAC lipomas preoperatively. These features will be discussed, as well as the surgical and pathological findings.
颅内脂肪瘤是一种罕见的肿瘤，可发生于桥小脑角（CPA）或内耳道（IAC）。尽管脂肪瘤在身体其他部位看似无害，但CPA和IAC内的脂肪瘤常累及周围的颅神经，这使得保留听力的尝试大多不成功。为了将IAC脂肪瘤与更常见的听神经瘤区分开来，对5例此前未报道的IAC脂肪瘤病例的术前影像学研究（磁共振成像和计算机断层扫描）进行了评估。基于这些研究，确定了一些特征，这些特征可能有助于外科医生术前诊断IAC脂肪瘤。将讨论这些特征以及手术和病理结果。
