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This study aims to explore anatomical landmarks to aid in performing a nasopharyngectomy via the transoral corridor. An endoscopic transoral nasopharyngectomy was successfully achieved on all 12 sides. Identification of the pICA is a prerequisite before the Eustachian tube (ET) transection. The ET and the prevertebral contents could be adequately removed via the transoral corridor. The pterygoid hamulus, sphenoidal spine and petrotympanic fissure are reliable landmarks for performing a transoral nasopharyngectomy. Identifying the pICA is a prerequisite before the transection of the ET to avoid pICA injury.
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