<s>[INST] Hi I have a lump on my lower right leg it has been ther around 13 years it feels like its filled with fluid. I recently went on the depo injection n since then gained weight and now it aches at night. I am a hairdresser so I'm on my feet for many hours a day [/INST] Hi. It sounds like a cystic lesion. For the cyst you should get examined by a Surgeon. By examination he can decide what kind of cyst it is. And if it is causing problems you can get it removed. It is usually a minor surgery and is done under local anaesthesia. So let the Surgeon decide once he examines you. Do not worry.Take care.Dr Rishi, New Delhi, India. </s>