About 5,000 girls and women in South Sudan suffer from fistula each year.
The sick sister was healed after relics from John XXIII were placed on the fistula on her abdomen.
"long, narrow ulcer," late 14c., from Latin fistula "pipe; ulcer," of uncertain origin.
fistula fis·tu·la (fĭs'chə-lə)
n. pl. fis·tu·las or fis·tu·lae (-lē')
An abnormal passage from a hollow organ to the body surface, or from one organ to another.