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In a series of 53 acoustic neurinomas removed by translabyrinthine surgery, measurement technique focused on maximum tumor size estimated with computed tomography (CT) compared with maximum size determined at surgery. Fifty-three tumors varying in size and location were evaluated. Ten small tumor not found with initial CT were identified at CT revision. Of the 34% which could not be seen with CT, all but two were less than 15 mm in diameter, indicating a lower limit for CT detection of 15 mm.
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Tos et al. (1980) studied this question.
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