Volumetric Analysis of Nasopharyngectomy via Endoscopic Endonasal, Maxillary Transposition, and Lateral Temporal-Subtemporal Approaches.

Objective: This project develops a computer model that allows volumetric analysis of the exposure afforded by an endonasal-endoscopic approach, maxillary transposition, and lateral temporal-subtemporal approaches during a nasopharyngectomy. The model will demonstrate idiosyncracies of these approaches, including sacrifice of normal tissues, ease of instrumentation, and gate of entry.

Subjects And Methods: Computed tomographic scans of an anatomic specimen were used to create computer simulations of the endoscopic endonasal, maxillary transposition, and lateral temporal-subtemporal approaches for T1and T4 nasopharyngeal carcinoma; therefore, allowing assessment of their surgical corridor using Intuition, a software that allows a semiautomated computerized segmented volumetric analysis.

Volumetric analysis of endoscopic and traditional surgical approaches to the infratemporal fossa.

Objectives/hypothesis: In an effort to decrease morbidity, skull base surgeons have explored less invasive approaches to the infratemporal fossa, including endonasal-endoscopy, minicraniotomies, and transantral endoscopic and microscopic corridors. This project presents quantitative data that assesses the practicality, and volumetric exposure afforded by endonasal and open approaches to the infratemporal fossa.

Study Design: First, the study defines the anatomy of endoscopic-endonasal and preauricular approaches to the infratemporal fossa.