Co-existing pelvi-ureteric junction obstruction and retrocaval ureter in a 7-year-old Nigerian girl: a case report. Pyramid Journal of Medicine, [S. l.], v. 9, n. 1, 2026. DOI: 10.4081/pjm.2026.575. Disponível em: https://africa.pagepress.net/pjm/article/view/575. Acesso em: 17 apr. 2026.