Department of Pediatric Surgery,Spedali Civili Hospital;
Department of Surgery,Spedali Civili Hospital;
Department of Pediatric Surgery,Papa Giovanni XXXIII Hospital;
Department of Pathology,Papa Giovanni XXXIII Hospital;
Department of Pediatric Surgery,Spedali Civili Hospital,University of Brescia;
Inflammatory; fibroid; polyp; Duodenum; Ultrasound; endoscopy; Children; Surgery;