What to expect from joint aspiration for a ganglion cyst

The clinician confirms the cyst's position and cleans the skin. Local anaesthetic may be offered before a needle enters the lump. The thick, clear or jelly-like contents are withdrawn, and pressure over the area may be applied afterwards. Ultrasound can help when the cyst is small or close to a tendon, joint, or nerve. Aspiration may improve pressure or movement, but it does not always remove the cyst wall or its joint connection.

Tell your clinician about medicines that affect bleeding, allergies, skin problems, or previous procedures at the same site. Keep the dressing clean and follow advice about a splint or activity. Avoid repeatedly pressing, hitting, or loading the lump while it is tender. Do not try to burst it yourself. Contact the clinic if the dressing becomes soaked or if you are unsure when to resume sport or work.

Arrange prompt review for spreading redness, increasing warmth, pus, fever, or pain that is becoming stronger. Seek urgent assessment if fingers become weak, blue, unusually cold, or persistently numb. A rapidly enlarging lump or a new lump that has not been assessed also deserves clinical examination rather than repeat self-treatment.

Ask whether the lump is suitable for aspiration, whether imaging is needed, how close it is to a nerve or tendon, what recurrence might mean, and when surgery or observation would be considered.