What are ganglion cysts and what are their symptoms?
Ganglion cysts are benign fluid-filled sacs that most commonly appear on the back of the wrist, palm, or fingers. They are connected to the joint capsule or a tendon sheath and contain thick fluid similar to synovial fluid. The exact cause of ganglion cyst formation is not fully understood, but it may be related to repetitive strain or degenerative changes in the tissues that produce joint fluid, leading to the accumulation of fluid outside the joint.
Ganglia are more common in individuals who put frequent strain on their joints or perform repetitive hand movements, such as typing or manual labor, but they can also appear without an identifiable cause. Their size may vary, and they often fluctuate over time: they may grow, shrink, or temporarily disappear. Depending on their size and location, ganglion cysts may cause:
- Visible swelling under the skin
- Pain or a feeling of pressure, especially when located near a nerve
- Reduced joint mobility or numbness
- Psychological discomfort due to their appearance
What is the role of Ultrasound in treating ganglion cysts?
Musculoskeletal Ultrasound is highly valuable for both the diagnosis and treatment of ganglion cysts. It enables differential diagnosis from other soft-tissue masses, such as lipomas or tumors, and provides accurate assessment of the cyst’s size, location, and relationship to surrounding structures.
Once a ganglion cyst is diagnosed, a specialized Radiologist can perform Ultrasound-Guided Aspiration. This modern, minimally invasive procedure involves placing a fine needle into the cyst and aspirating the fluid. Aspiration may be followed by a corticosteroid injection to reduce inflammation and prevent recurrence. Continuous Ultrasound Guidance during the procedure ensures that the needle is precisely positioned, guaranteeing both the safety and effectiveness of the treatment.
What are the advantages of Ultrasound-Guided Aspiration for ganglion cysts?
Ultrasound-Guided Aspiration is a safe, minimally invasive technique that allows for targeted and effective treatment of ganglion cysts without the need for surgery. It is an ideal option for patients who wish to avoid surgery and its associated recovery time, as it does not require incisions or stitches. This enables patients to return to daily activities immediately while minimizing the risk of complications.
The procedure takes approximately 30 minutes, is performed under local anesthesia, and is generally well tolerated by patients.

