Monophasic Synovial Sarcoma of Foot Masquerading Squamous Cell Carcinoma
Sankappa P Sinhasan,
Professor, Department of Pathology, All India Institute of Medical Sciences (AIIMS), Guwahati, Assam, India.
Synovial sarcoma being a rare sarcoma typically arises near articular surface most commonly around knee joint. Hereby, a case report of a 38-year-old male with complaint of cauliflower-like proliferative growth on the plantar aspect of left foot. It rapidly progressed in size over a period of one month. Wedge biopsy was done and diagnosis of malignant mesenchymal tumour was suggested. Further clinical workup of the case was carried out and the surgeons proceeded with amputation of the foot. Gross examination of specimen showed a large, ulcerated, nodular, exophytic, cauliflower-like growth over the plantar aspect of left foot along with areas of haemorrhage and necrosis masquerading more common squamous cell carcinoma. Histopathology revealed characteristic hypocellular and hypercellular areas showing pleomorphic spindle cells in fascicles and whorls suggesting monophasic synovial sarcoma. Immunohistochemistry stains further confirmed the diagnosis. The current case report highlights the rare presentation of synovial sarcoma as a cauliflower type of growth at a rare location.