https://www.selleckchem.com/pr....oducts/prostaglandin
The Koos classification of vestibular schwannomas is designed to stratify tumors based on extrameatal extension and compression of the brainstem. Our prior study demonstrated excellent reliability. No study has yet assessed its validity. To present a retrospective study designed to assess the validity of the Koos grading system with respect to facial nerve function following treatment of 81 acoustic schwannomas. We collected data retrospectively from 81 patients with acoustic schwannomas of various Koos grades who were
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