• cystic
  • Cutaneous metaplastic synovial cyst is a rare cystic tumor that typically presents as a solitary tender subcutaneous nodule. (biomedcentral.com)
  • 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
  • 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)
  • Examination
  • Consequently, we made an external incision to remove the neoplasm: histological examination of the capsule revealed it to be a cutaneous metaplastic synovial cyst. (biomedcentral.com)
  • 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)
  • metaplastic
  • The cause of formation of cutaneous metaplastic synovial cysts remains unclear, but previous trauma usually precedes its onset. (biomedcentral.com)
  • If confirmed by other colleagues, it might be interesting to consider the development of cutaneous metaplastic synovial cysts as a possible side effect of the use of hyaluronic acid fillers for increasing the volume of certain regions of the face. (biomedcentral.com)
  • bone
  • We performed an MRI that revealed the presence of a cyst that strongly adhered to the bone surface. (biomedcentral.com)
  • In the subcutis, we identified a cyst that we removed with some difficulty because it tenaciously adhered to the underlying bone surface. (biomedcentral.com)
  • 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)
  • 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)
  • case
  • 1 This case illustrates that facet joint cysts can be safely and effectively ruptured percutaneously under fluoroscopic guidance. (lww.com)
  • This case is of a 26-year-old woman who presented with a cyst in the infrazygomatic region that was injected with non-animal stabilized hyaluronic acid at another centre a few months ago. (biomedcentral.com)
  • cause
  • 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)
  • Cysts encroach the neuroforamen and cause spinal nerve irritation and radiculopathy. (lww.com)
  • The cause of facet cysts is not well known. (wikipedia.org)
  • 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
  • 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)
  • Trauma
  • The cyst in the zygomatic region is the element of a seemingly obvious relationship: its formation was attributable to local injection of hyaluronic acid and not to previous local trauma. (biomedcentral.com)
  • some current theories explaining this phenomenon have not yet been tested or challenged but include increased pressure in CSF, filling of congenital cysts with one-way valves, inflammation in response to trauma and disease. (wikipedia.org)
  • injection
  • After several milliliters were injected, the cyst filled completely, and resistance was noted preventing further injection. (lww.com)
  • inflammation
  • If necessary, the cyst can be aspirated to reduce its size, then injected with a corticosteroid to reduce inflammation. (wikipedia.org)