DOI: 10.36347/sjams.2021.v09i05.010

Pages: 680-683

Synovial sarcoma is an unusual malignant tumour, derived from soft tissue mesenchymal cells,It arises most commonly in the deep soft tissues of lower extremities, especially in the region of the lower thigh, with a predilection for sites in proximity to large joints, such as the knee and ankle. Only 3% to 10% of all synovial sarcomas occur in the head and neck region. Primary synovial sarcoma of the parotid gland is exceptionally uncommon, with few cases reported in the literature. We report the case of a 10-month-old infant, who consulted for right parotid swelling evolving for 1 month, rapidly increasing in size without inflammatory signs or deterioration of the general condition. Ultrasound, CT and MRI were done showing a locally infiltrating lesion process. The infant underwent a biopsy with immunohistochemical study confirming the diagnosis of synovial sarcoma of the right parotid gland.