• degenerative
  • The appearances are in keeping with long-standing lesion, most likely a degenerative synovial cyst related to the left C6-7 facet joint, on a background of severe facet joint disease with erosions. (radiopaedia.org)
  • Degenerative right L5-S1 facet joint synovial cyst which contacts the exiting right L5 nerve root and also compresses the traversing right S1 nerve root. (radiopaedia.org)
  • Trauma-related: Fracture with avulsed fragment Fragmentation of meniscus with calcification Degenerative joint disease related: Degenerative joint disease with detached spur Synovial proliferation: Pigmented villonodular synovitis Neoplastic: Synovial chondrosarcoma Other: Osteochondritis dissecans Sequestrum from osteomyelitis Neuropathic (Charcot) joint Intra-articular bodies in SOC typically have popcorn calcification, with a dense sclerotic border with radiolucent central region. (wikipedia.org)
  • cystic
  • A meniscal cyst is a well-defined cystic lesion located along the peripheral margin of the meniscus, a part of the knee, nearly always associated with horizontal meniscal tears. (wikipedia.org)
  • tendons
  • This description is based on the observations that the cysts occur close to tendons and joints, the microscopic anatomy of the cyst resembles that of the tenosynovial tissue, the fluid is similar in composition to synovial fluid, and dye injected into the joint capsule frequently ends up in the cyst, which may become enlarged after activity. (wikipedia.org)
  • Extensor tendons pass through the extensor retinaculum at wrist joint in 6 synovial sheaths, also referred to compartments. (wikipedia.org)
  • De Quervain's syndrome is a medical condition when the synovial sheath surrounding tendons in the first extensor tendon compartment becomes inflamed, so called tenosynovitis. (wikipedia.org)
  • The tendons of the abductor pollicis longus and the extensor pollicis brevis run narrower due to the thickening of the synovial sheath, which causes pain when extending and moving the thumb outward. (wikipedia.org)
  • decompression
  • Treatment of meniscal cysts consists of a combination of cyst decompression (intraarticular decompression versus open cystectomy) and arthroscopic repair of any meniscal abnormalities. (wikipedia.org)
  • knee
  • The relationship that occult popliteal cysts may have to discomfort behind the knee is noted. (annals.org)
  • The synovial sac of the knee joint can, under certain circumstances, produce a posterior bulge, into the popliteal space, the space behind the knee. (wikipedia.org)
  • A ruptured cyst is treated with rest, leg elevation, and injection of a corticosteroid into the knee. (wikipedia.org)
  • Size is variable, and meniscal cysts are known to change in size with knee flexion/extension. (wikipedia.org)
  • neurological
  • Because of this, serious problems such as neurological deficits or cauda equina syndrome (loss of bowel and bladder control) are extremely uncommon even for very large cysts. (spine-health.com)
  • Tarlov cysts are relatively common when compared to other neurological cysts. (wikipedia.org)
  • meniscus
  • In their most subtle form, meniscal cysts present as focal areas of high signal intensity within a swollen meniscus. (wikipedia.org)
  • It is not uncommon for radiologists to miss this type of meniscal cyst because the signal intensity is not quite as great as fluid on T2 weighted sequences.2 When this fluid is extruded into the adjacent soft tissues, the swollen meniscus subsequently assumes a more normal shape, and the extruded fluid demonstrates a higher T2 signal typical of parameniscal cysts. (wikipedia.org)
  • Medial meniscus horizontal tear extending into a meniscal cyst. (wikipedia.org)
  • Large medial meniscus cyst. (wikipedia.org)
  • lesions
  • Arthrography and venography using imaging dyes allow for the detection of popliteal cysts and the exclusion of thrombotic lesions but are invasive procedures. (wikipedia.org)
  • lipoma
  • This implies that the presence of this muscle is usually asymptomatic, although the extensor digitorum brevis manus might cause a painful swelling which can potentially be misdiagnosed as other pathology such as synovial cyst and lipoma. (wikipedia.org)
  • peripherally
  • It is important not to forget synovial cysts as a cause of peripherally enhancing masses in the extrathecal space, anywhere along the spinal canal, but particularly in the lower lumbar and midcervical regions. (radiopaedia.org)
  • The most widely accepted theory describes meniscal cysts resulting from extrusion of synovial fluid through a peripherally extended horizontal meniscal tear, accumulating outside the joint capsule. (wikipedia.org)
  • connective tissue
  • Histologic examination reveals the Tarlov-cyst outer wall is composed of vascular connective tissue, and the inner wall is lined with flattened arachnoid tissue. (wikipedia.org)
  • bone
  • Synovial osteochondromatosis (SOC) (synonyms include synovial chondromatosis, primary synovial chondromatosis, synovial chondrometaplasia) is a rare disease that creates a benign change or proliferation in the synovium or joint-lining tissue, which changes to form bone-forming cartilage. (wikipedia.org)
  • Also, they can deposit in the synovial lining, reestablish a blood supply, and become replaced by bone. (wikipedia.org)
  • Cysts that were compressing one or more nerves and causing bone erosions have been reported to occur near the shoulder joint. (wikipedia.org)
  • The cysts are often multiple, extending around the circumference of the nerve, and can enlarge over time to compress neighboring nerve roots, to cause bone erosion. (wikipedia.org)