Ganeva K, Shivachev P, Anakievski D, Kalchev K, Balev B, Iotova V. The challenge to prove a rare cause of secondary arterial hypertension. A case report of a pediatric renal solitary fibrous tumor. Turk J Pediatr 2022; 64: 759-765. https://doi.org/10.24953/turkjped.2020.2809