Some fusion abnormalities can be seen in newborns. Lumps in the lower belly, found with a physical exam may signal this problem. An ultrasound can show why a lump pushes the bladder forward and the vagina back.
Some patients with complete duplication and a block are found at puberty. A girl can get her period, but she will feel uncomfortable. At that time a lump in the lower belly can be seen. This lump is from the buildup of menstrual fluid in the blocked vagina.
If a physical exam doesn’t show a problem, an exam called a vaginoscopy may be done. For this exam, a scope is placed in the vagina to let the surgeon to see inside. Sometimes an MRI is used to get a full diagnosis.