(sarcoma, synovial, malignant) A malignant neoplasm that usually arises in the synovial membranes of the joints and the synovial cells of the tendons and bursae.

A malignant neoplasm characterized by the chromosomal translocation t(X;18)(p11;q11). It can occur at any age, but mainly affects young adults, more commonly males. Although any site can be affected, the vast majority of the cases arise in the deep soft tissues of extremities, especially around the knee. Microscopically, synovial sarcoma is classified as monophasic (with a spindle or epithelial cell component) or biphasic (with both spindle and epithelial cell components). Synovial sarcomas can recur or metastasize to the lungs, bones, and lymph nodes.

A malignant tumor that develops in the synovial membrane of the joints.

A type of mesenchymal tissue cell tumor that exhibits epithelial differentiation, which most frequently arises in the extremities.

(sarcoma, synovial) A malignant neoplasm arising from tenosynovial tissue of the joints and in synovial cells of tendons and bursae. The legs are the most common site, but the tumor can occur in the abdominal wall and other trunk muscles. There are two recognized types: the monophasic (characterized by sheaths of monotonous spindle cells) and the biphasic (characterized by slit-like spaces or clefts within the tumor, lined by cuboidal or tall columnar epithelial cells). These sarcomas occur most commonly in the second and fourth decades of life. (From Dorland, 27th ed; DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1363)

Synovial sarcoma is a rare type of cancer that tends to arise near large joints, particularly the knee, in young adults. Despite its name, it typically doesn't affect the interior of joints, where synovial tissue and fluid are located.

Synovial sarcoma is a rare and aggressive soft tissue sarcoma. In the early stages of the condition, it may cause no noticeable signs or symptoms. However, as the tumor grows larger, affected people may notice a lump or swelling. In some cases, the tumor can limit range of motion or cause numbness and/or pain if it presses on nearby...