{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,11,19]],"date-time":"2025-11-19T07:03:50Z","timestamp":1763535830460},"reference-count":23,"publisher":"Georg Thieme Verlag KG","issue":"S 02","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J Neurol Surg B Skull Base"],"published-print":{"date-parts":[[2022,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>\n          Background\u2003Densely packed neurovascular structures, often times inseparable capsular adhesions and sometimes a multicompartmental tumor extension, make surgical excision of cerebellopontine angle epidermoids (CPEs) a challenging task. A simultaneous or an exclusive endoscopic visualization has added a new dimension to the classical microscopic approaches to these tumors recently.<\/jats:p><jats:p>\n          Methods\u2003Eighty-six patients (age: 31.6\u2009\u00b1\u200911.7 years, M:F\u2009=\u20091:1) were included. Nineteen patients (22.1%) had a multicompartmental tumor. Tumor extension was classified into five subtypes. Sixty-two patients underwent a pure microscopic approach (72%) out of which 10 patients (16%) underwent an endoscope-assisted surgery (11.6%) and 24 patients (28%) underwent an endoscope-controlled excision. Surgical outcomes were retrospectively analyzed.<\/jats:p><jats:p>\n          Results\u2003Headache (53.4%), hearing loss (46.5%), and trigeminal neuralgia (41.8%) were the leading symptoms. Interestingly, 21% of the patients had at least one preexisting cranial nerve deficit. Endoscopic assistance helped in removing an unseen tumor lobule in 3 of 10 patients (30%). Pure endoscopic approach significantly reduced the hospital stay from 9.2 to 7.3 days (p\u2009=\u20090.012), and had a statistically insignificant yet a clearly noticeable lesser incidence of subtotal tumor excision (0 vs. 10%, p\u2009=\u20090.18) with comparable cranial nerve deficits but with a higher postoperative cerebrospinal fluid (CSF) leak rate (29% vs. 4.8%, p\u2009=\u20090.004).<\/jats:p><jats:p>\n          Conclusion\u2003Endoscope assistance in CPE surgery is a useful addition to conventional microscopic retromastoid approach. Pure endoscopic excision in CPE is feasible, associated with a lesser duration of hospital stay, better extent of excision in selected cases, and it has a comparable cranial nerve morbidity profile albeit with a higher rate of CSF leak.<\/jats:p>","DOI":"10.1055\/s-0040-1722713","type":"journal-article","created":{"date-parts":[[2021,2,23]],"date-time":"2021-02-23T00:15:38Z","timestamp":1614039338000},"page":"e60-e68","source":"Crossref","is-referenced-by-count":3,"special_numbering":"S","title":["Cerebellopontine Angle Epidermoids: Comparative Results of Microscopic and Endoscopic Excision Using the Retromastoid Approach\u201d"],"prefix":"10.1055","volume":"83","author":[{"given":"Suyash","family":"Singh","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kuntal Kanti","family":"Das","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Krishna","family":"Kumar","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kamlesh","family":"Rangari","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Priyadarshi","family":"Dikshit","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kamlesh Singh","family":"Bhaisora","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jayesh","family":"Sardhara","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anant","family":"Mehrotra","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Arun Kumar","family":"Srivastava","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery, Sanjay Gandhi Postgraduate Institute of 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