Abstract
Ten cases of acoustic neurinoma were investigated with regards to CT density. The degree of enhancement, tumor stain on angiograms, operative findings, and histological findings in order to see whether the consistency of acoustic neurinoma is predictable by preoperative CT scan findings.
Four out of the five cases of the tumor, which were found to be solid and hard by surgery, presented a plain CT density of over 50 Hounsfield units. In four out of five cases, low density areas with their density under 30 on plain CT were cystic and soft. There was no correlation between the consistency of acoustic neurinoma and degree of enhancement on CT scan. Tumors stained by transbrachial retrograde vertebral angiography were mostly solid and needed sharp dissection at operation. There was no correlation between CT findings and histological findings.
