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Tumors of the parapharyngeal space (PPS), a potential space lateral to the upper pharynx, are uncommon, making up less than 1% of all head and neck neoplasms. Both benign and malignant tumors may arise from any of the structures contained in this space. Of PPS tumors, 70-80% are benign, and 20-30% are malignant. Most PPS tumors are of salivary or neurogenic origin, although metastatic lesions, lymphoreticular lesions, and a variety of uncommon, miscellaneous lesions or masses may arise in this location.
Types of tumors:
Parapharyngeal space tumors are rare and account for 0.5% of head and neck tumors, 80% benign and 20% malignant;
Performed more than 30 surgeries for parapharyngeal swelling in paediatric and adult patient.