{Reference Type}: Case Reports
{Title}: Intraosseous Petrous Apex Schwannoma: Case Report and Review of Literature.
{Author}: Rozman PA;Benjamin CG;Kondziolka D;Sen C;Roland JT;Zagzag D;Snuderl M;Gordon D;
{Journal}: World Neurosurg
{Volume}: 132
{Issue}: 0
{Year}: Dec 2019
{Factor}: 2.21
{DOI}: 10.1016/j.wneu.2019.08.157
{Abstract}: <B>BACKGROUND: </B>Intraosseous petrous apex schwannomas are an exceedingly rare entity; little is known about their epidemiology, natural history, and postoperative outcomes.<BR><B>METHODS: </B>Here, we present the fourth known case of a primary intraosseous schwannoma of the petrous apex: a 68-year-old woman presenting with diplopia, facial numbness, progressive intermittent vertigo, tinnitus, diminished hearing, and ataxia. She underwent a transtemporal approach for subtotal resection of the tumor with subsequent stereotactic radiosurgery.<BR><B>CONCLUSIONS: </B>Our 2-year follow-up demonstrates slow growth and success of multimodal management in the treatment of these tumors. We review the 3 prior reports of petrous apex schwannomas and identify unifying radiographic and clinical characteristics to aid future diagnostic considerations of lesions of the petrous apex.