How do doctors diagnose a Bartholin cyst?
To diagnose a Bartholin cyst, a doctor will do a physical exam to look at the vagina. If the cyst produces discharge, your doctor may test the fluid for sexually transmitted infections (STIs) or other bacterial infections.
In women older than age 40, doctors may perform a test called a biopsy to rule out cancer of the vulva. During this test, the doctor will remove a small sample of tissue and look at it under a microscope.