Radiological Case of the Month

Abstract

A 13-MONTH-OLD girl fell and had painful swelling of the right ankle on which she did not want to bear weight. Delivery was at term after an uncomplicated pregnancy. The mother's venereal disease research laboratory serology test for syphilis was negative early in pregnancy, and it was not repeated. Immunizations, including BCG vaccine, were up to date. Two adults in the household had pulmonary tuberculosis. The child was not