



I would say its a ganglion. Totally harmless. Its just a collecton of fluid around a joint. No need to remove unless it gets huge or is very painful. They often just disappear on their own,although this can take some time
i have a thing that looks similar. mine appeared over night I went to the doctor and she said that it could be a ganglion cyst and gave me a referal go get a ultra sound incase it grows or causes any pain