The incidence of pelvic phleboliths in pediatric patients.

During a seven year period in a pediatric x-ray department 15 patients with pelvic phleboliths were encountered in a total of an estimated 12,000 pelvic roentgenograms, an incidence of 1 case per 800. The age range was from 9 to 17 years (average age 13 years), there were 10 girls and 5 boys, and 6 patients had more than 1 phlebolith.