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Surgical removal of benign tumors of the Parapharyngeal space (PPS) is the treatment of choice. PPS tumors may remain undetected for long periods of time and large tumors in the PPS can extend into the Retropharyngeal Space or into the Infra-Temporal Fossa. Anatomically, the mandible represents a significant obstacle to successful PPS surgery. Except for very small tumors, it is difficult to remove larger tumors from this region without some form of mandibular retraction. The standard mandibular "swing" approach involves splitting of the lower lip and a single parasymphysis osteotomy for retraction of the mandible laterally to expose the PPS. However, the morbidity associated with midline lip split and anesthesia of the hemi-labial region caused by the severing of the mental nerve is an unwanted complication of this approach. In this article, we describe an easier double mandibular osteotomy (Segmental Mandibular Swing Approach) which avoids the morbidity associated with lip splitting or intra-oral mucosal incision but allows excellent exposure of the superior and lateral aspect of PPS for easier removal of large tumors in this region.

Double mandibular osteotomy with segmental mandibular swing approach to parapharyngeal space