The duodenum is the initial C-shaped segment of the small intestine and is a continuation of the pylorus. (Lopez PP, Gogna S, Khorasani-Zadeh A. Anatomy, Abdomen and Pelvis: Duodenum. [Updated 2023 Jul 17]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2024 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK482390/)
