Computed Tomography-guided Stereotactic Aspiration of Posterior Fossa Hematomas: A Supine Lateral Retromastoid Approach

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Abstract
We report a supine lateral retromastoid approach for computed tomography-guided stereotactic aspiration of hematomas of the posterior fossa. The method involves horizontal insertion of the aspiration needle at the suboccipital region with the patient in a supine position with the head turned 30 to 40 degrees away from the lesion and with slight forward flexion of the neck. Eleven hematomas have been removed through this approach thus far, nine cerebellar and two pontine. With this technique, general anesthesia is not needed and operative invasion is minimal, allowing hematoma aspiration in patients in whom operation would previously not have been indicated. An additional merit is the suitability of this method for elderly patients.

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