A retrospective analysis of surgery in prestyloid parapharyngeal tumors:
lateral approaches vs transoral robotic surgery
Abstract
Objective Surgery is the standard treatment for most tumors in the
prestyloid parapharyngeal space (PPS) but it can be a challenging
procedure because of the anatomical complexity of the area. Prestyloid
surgery can be performed with various lateral approaches or with a
medial approach using transoral robotic surgery (TORS) – either alone
or in combination with a transcervical incision. Here we report our
experience in the surgical management of prestyloid PPS tumors. Design
We have retrospectively compared results with lateral or medial
approaches to surgical resection of prestyloid tumors. Participants
Between 2015 and 2020, 28 patients with prestyloid PPS tumors underwent
surgery at our center: 14 with lateral approaches, including
transcervical, transcervical-parotid, and transcervical-mandibular, 12
with TORS, and two with TORS plus a transcervical incision. Main outcome
measures Surgical time, post-surgical complications, length of hospital
stay, need for feeding tube, and relapse-free survival in the two
patient groups. Results Pleomorphic adenoma was the most frequent tumor
and 60.7% of the tumors were benign. Tumor volume and maximum length
were similar in patients undergoing surgery with a lateral approach and
in those undergoing TORS. Intraoperative image guidance and ultrasound
were used in 33% of TORS. TORS was associated with less surgical time,
fewer complications, and shorter hospital stays. Survival rates were
similar in the two groups. Conclusion The medial approach by TORS offers
better surgical results in prestyloid tumors than the open lateral
approach and can be refined by intraoperative guidance.