To explore the value of magnetic resonance imaging (MRI) in diagnosis of occupying lesions in cerebellopontine angle area. MRI records of 78 patients with pathologically confirmed occupied lesions in cerebellopontine angle area were analyzed. Of the 78 cases, 48 (61.5%) were unilateral acoustic neuroma, 5 (6.4%) were bilateral acoustic neuroma, 12 (15.4%) were meningioma, 4 (5.1%) were trigeminal neuroma, 3 (3.8%) were lipoma, 2 (2.6%) were melanoma, and 1 (1.3%) was medulloblastoma. According to the anatomic site, tumor lesion character, and MRI signal, the majority of cerebellopontine angle area tumors were diagnosed accurately. MRI plays an important role in diagnosis of occupying lesions in cerebellopontine angle area.

MRI differentiation diagnosis of occupying lesions in cerebellopontine angle area

Objective Improve to intracranial lipoma diagnosis.Methods six patients with lipoma were examined both by CT and MRI.All of them were proved by post-operative pathology.The tumors of 4 cases were located in corpus callosum,1 cases in lateral fissure and the other in longitudinal fissure.Results The lipoma showed high signal on both T_1 and T_2 weighted images.Low density was seen on all CT images.Conclusion Lipoma usually accompanies with congenital abnormal development.It is reliable to intracranial lipoma diagnosis by CT and MRI.

Han Yan

Papers

CT and MR Diagnosis of Intracranial Lipoma