Abstract
Objectives To describe the operative technique for treatment of epidermoid cysts in the cerebellopontine
angle (CPA).
Design The present video is a case report.
Setting Patient is positioned in three-quarters prone. Retrosigmoid approach should be made
under neurological monitoring and with neuronavegation to help achieve maximal safe
resection. The skin incision is vertical, slightly curved, 5 mm medial to the mastoid
notch. Craniectomy is superiorly limited by the transverse sinus and laterally limited
by the sigmoid sinus. A C-shaped durotomy is made with its base protecting the sigmoid sinus. The lesion is
removed in piecemeal fashion ([Fig. 1]). The neurological monitoring helps.
Results The patient was discharged 2 days later without neurological deficits.
Conclusions The surgical treatment associated with neurological monitoring and neuronavegation
is a safe procedure to treat epidermoid cysts in the CPA.
The link to the video can be found at: https://youtu.be/sEuFyq9c2sw.
Keywords
epidermoid cyst - cerebellopontine angle lesion - cerebellopontine angle microsurgery
- epidermoid cyst surgery
