AI Article Synopsis
- - The transcribriform approach involves resecting the crista galli, but the standard technique has its drawbacks, prompting a review of a new method used in patients with olfactory neuroblastomas.
- - The study included 38 patients, revealing that the posterior crista galli was invaded by tumors in four cases, while the anterior part remained unaffected.
- - A cadaveric study showed that after removing the crista galli, access to the superior dura was significantly improved, allowing for easier manipulation during surgery.
Article Abstract
A critical procedure in the transcribriform approach is the resection of the crista galli. However, the standard technique for crista galli resection has several disadvantages. We reviewed the cases of patients with olfactory neuroblastomas who underwent an endoscopic endonasal transcribriform approach using a newly developed technique for crista galli resection. We performed a cadaveric study to measure the superior accessibility limits using the proposed method. We included 38 patients with olfactory neuroblastomas in this study. The tumor invaded the posterior crista galli in four patients. The anterior end of the crista galli was not invaded by the tumor. Our cadaveric study showed that the dura was approachable to the point that was 7.4 ± 1.3 mm superior and 23.2 ± 7.2 mm lateral to the foramen cecum following crista galli removal. By resecting the crista galli in advance, manipulation of the superior dura became feasible.
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