Most ovarian cysts are functional — they form as part of the normal cycle and disappear on their own within two or three months. Finding one on a scan is usually not a cause for alarm, and the first thing we do is work out which kind it is.
Types: functional (follicular, corpus luteum), endometriomas (“chocolate cysts” — see endometriosis), dermoid cysts, cystadenomas, and, uncommonly, malignant cysts.
Symptoms: often none. When present — pelvic pain or a dragging ache on one side, bloating, pain during intercourse, irregular cycles, or pressure symptoms.
Urgent symptoms: sudden severe one-sided pelvic pain with nausea or vomiting may indicate ovarian torsion or a ruptured cyst. This is an emergency — go to a hospital immediately.
Assessment: transvaginal ultrasound is the key test, with tumour markers (CA-125 and others) and MRI where the appearance is not clearly benign. Age matters: a simple cyst in a 25-year-old and the same cyst in a 60-year-old are managed very differently.
Treatment: observation with a repeat scan in 6–12 weeks for simple cysts; laparoscopic cystectomy — removing the cyst while preserving healthy ovarian tissue — for persistent, large, symptomatic or suspicious cysts. Preserving ovarian reserve is a priority in our surgical technique, particularly in women who have not completed their family; this is where a fertility-trained surgeon makes a real difference.