 [ Symptoms ] just discovered a 4cm x 4cm cyst inside my left ovary via ultrasound will ovary need removal [ Disease ] ovarian cysts smaller than 5 cm should be removed if the medical treatment fails after 3 4 months and it is extremely symptomatic it can be endometriomas benignaccording to your symptoms but they are usually bigger than 5cm… you do not need to be scared it is a common problem … try loosing extra pounds asap and exercise if you can yoga will help you also…with medical treatment…