Which condition has a recurrence risk if the cyst lining is not removed?

• A. Removal of cyst lining (cystectomy)
• B. Antibiotics
• C. Observation
• D. Chemotherapy

Answer: (A)

The important idea is that the cyst lining is what keeps the cyst forming and refilling. If that lining is left behind, it can continue to produce fluid and the cyst can come back after treatment. Removing the cyst lining, i.e., performing a cystectomy, gets rid of the source of recurrence, so it’s the best way to prevent the cyst from coming back.

Antibiotics treat infection and don’t remove the lining, so they won’t prevent recurrence. Observation leaves the lining in place and the cyst can persist or reform. Chemotherapy targets abnormal or malignant cells, not the simple process of a benign cyst refilling from its lining.