Müge Ustaoğlu, Gülgün Koçak, Çiğdem Siviloğlu, and Ercüment Cengiz. “An Unusual Case of Duodenal Metastasis of Pulmonary Pleomorphic Carcinoma ”. Turkish Journal of Gastroenterology 29, no. 1 (July 25, 2019): 136–137. Accessed July 5, 2025. https://tjg.avesjournals.com/index.php/tjg/article/view/3503.