DOI: 10.36347/sjams.2020.v08i01.013

Pages: 65-66

Synovial sarcoma is a soft tissue sarcoma, which is rarely seen, affecting 1-3 per million populations per year, more common among teenagers and young adults but can also be seen in old age. Despite the name, synovial sarcoma, it is not related to the synovial tissues of the joints. Most commonly seen in the legs and arms, but can appear in any part of the body. It is a high grade tumor with distant spread seen in up to 50% of cases. Here is a 51 year old female presented with complaints of swelling over the right side of scalp since 3 months, insidious onset and gradually progressive. History of similar swelling in the scalp 6 months ago, for which she underwent excision. On examination 5x4 cm solitary swelling in right posterior parietal region of scalp, scar noted over the swelling, surface is nodular, with engorged veins, no visible pulsations, non-tender, firm in consistency, with restricted mobility, skin is free over swelling. Enlarged level II right cervical group of lymph nodes noted. No neurological deficits noted. CT showed features of lobulated hetero-genous mass in right parietal scalp area of size 5.2x3.7x5.5cm. No involvement of underlying cranium with normal brain parenchyma. FNAC has been reported as? Monophasic synovial sarcoma and suggested IHC S100, CD99, BCL2, CD34 markers.