Sampath Chandra Prasad1, Enrico Piccirillo2, Martin Chovanec3, Claudio La Melia4, Giuseppe De Donato2, Mario Sanna5. 1. Department of Otology & Skull Base Surgery, Gruppo Otologico, Piacenza-Rome, Italy. Electronic address: sampathcp@yahoo.co.in. 2. Department of Otology & Skull Base Surgery, Gruppo Otologico, Piacenza-Rome, Italy. 3. Department of Otorhinolaryngology and Head and Neck Surgery, Faculty Hospital Motol, Charles University, Prague, Czech Republic. 4. Unit of Otolaryngology and Middle Ear Surgery, University of Parma, Italy. 5. Department of Otology & Skull Base Surgery, Gruppo Otologico, Piacenza-Rome, Italy; Otolaryngology Clinic, University of Chieti, Italy.
Abstract
OBJECTIVE: To evaluate the role of lateral skull base approaches in the management of benign parapharyngeal space tumors and to propose an algorithm for their surgical approach. METHODS: Retrospective study of patients with benign parapharyngeal space tumors. The clinical features, radiology and preoperative management of skull base neurovasculature, the surgical approaches and overall results were recorded. RESULTS: 46 patients presented with 48 tumors. 12 were prestyloid and 36 poststyloid. 19 (39.6%) tumors were paragangliomas, 15 (31.25%) were schwannomas and 11 (23%) were pleomorphic adenomas. Preoperative embolization was performed in 19, stenting of the internal carotid artery in 4 and permanent balloon occlusion in 2 patients. 19 tumors were approached by the transcervical, 13 by transcervical-transparotid, 5 by transcervical-transmastoid, 6, 1 and 2 tumors by the infratemporal fossa approach types A, B and D, respectively. Total radical tumor removal was achieved in 46 (96%) of the cases. CONCLUSION: Lateral skull base approaches have an advantage over other approaches in the management of benign tumors of the parapharyngeal space due to the fact that they provide excellent exposure with less morbidity. The use of microscope combined with bipolar cautery reduces morbidity. Stenting of internal carotid artery gives a chance for complete tumor removal with arterial preservation.
OBJECTIVE: To evaluate the role of lateral skull base approaches in the management of benign parapharyngeal space tumors and to propose an algorithm for their surgical approach. METHODS: Retrospective study of patients with benign parapharyngeal space tumors. The clinical features, radiology and preoperative management of skull base neurovasculature, the surgical approaches and overall results were recorded. RESULTS: 46 patients presented with 48 tumors. 12 were prestyloid and 36 poststyloid. 19 (39.6%) tumors were paragangliomas, 15 (31.25%) were schwannomas and 11 (23%) were pleomorphic adenomas. Preoperative embolization was performed in 19, stenting of the internal carotid artery in 4 and permanent balloon occlusion in 2 patients. 19 tumors were approached by the transcervical, 13 by transcervical-transparotid, 5 by transcervical-transmastoid, 6, 1 and 2 tumors by the infratemporal fossa approach types A, B and D, respectively. Total radical tumor removal was achieved in 46 (96%) of the cases. CONCLUSION: Lateral skull base approaches have an advantage over other approaches in the management of benign tumors of the parapharyngeal space due to the fact that they provide excellent exposure with less morbidity. The use of microscope combined with bipolar cautery reduces morbidity. Stenting of internal carotid artery gives a chance for complete tumor removal with arterial preservation.
Authors: Kuauhyama Luna-Ortiz; Oscar Villa-Zepeda; Jose F Carrillo; Ernesto Molina-Frias; Antonio Gómez-Pedraza Journal: J Maxillofac Oral Surg Date: 2018-06-27