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A minimally invasive endoscopic transnasal retropterygoid approach to the upper parapharyngeal space: Anatomic studies and surgical implications

International Forum of Allergy & Rhinology Nov 08, 2019

Liu J, Sun X, Liu Q, et al. - Based on anatomic studies and surgeries, researchers characterized a minimally invasive technique of approaching the upper parapharyngeal space by an endoscopic transnasal retropterygoid approach. Six fresh human heads of the deceased are prepared for anatomic study at the Surgical Neuroanatomy Laboratory of the Center for Cranial Base Surgery within the Department of Neurological Surgery at the University of Pittsburgh School of Medicine. The medial pterygoid plate is the primary landmark of the upper parapharyngeal space approach to endoscopic transnasal retropterygoid. Through extracting the mucosa on the medial pterygoid plate and the mucosa below the Eustachian tube's pharyngeal orifice, access to the upper parapharyngeal space could be gained. The study's 3 patients tolerated the procedure well and after surgery there were no serious complications. The anatomic data and clinical cases in this study indicate that an endoscopic transnasal retropterygoid procedure for selected tumors in the upper parapharyngeal space is a feasible and successful surgical treatment.
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