On digital vaginal exam, a large, thin-walled, fluctuant structure was palpably filling the vaginal lumen just cranial to the urethral meatus. Digital pressure was used against the wall of the structure to perforate it; approximately 200 mL of brown, mucoid fluid was immediately released from the vulva. A sample was collected for cytology and culture. Within a minute, the drainage had ceased, and vaginoscopy was performed, revealing remnants of an imperforate hymen just cranial to the external urethral orifice. No fluid remained in the distended vagina, and no other abnormalities were seen. The remainder of the hymen was removed endoscopically with grasping forceps and submitted for histopathology.