Can ganglion cysts go away on their own?

Maybe: They may diminish in size on their own. Excision is not necessary. Aspiration of the cyst with a needle is a simple way to treat it.

Synovial fluid fills: Ganglion cysts. These are fluid filled sacs and synovial fluid is what lubricates the joint, fluid enters the cyst through a tiny attachment from the joint and makes the cyst large . This is why activity or force seemingly makes the ganglion larger as more pressure in the joint leaks into the cyst. Typically it's a like one way valve into the cyst but they can drain back so they go up and down.