A primary vaginal stone in a disabled child.

BACKGROUND: Primary vaginal stones in children are extremely rare but important because they are often mistaken for bladder calculi on plain film. CASE: A 13-year-old girl was admitted to the hospital with abdominal pain. Physical and serial radiologic examinations found a hard mass anterior to the rectum. By vaginoscopy, the stone was found at the posterior fornix of the vagina.
CONCLUSION: Primary vaginal stones should be suspected, especially in disabled children.