ALK-positive anaplastic large cell lymphoma presenting multiple lymphomatous polyposis: A case report and literature review

Figure 3 Esophagogastroduodenoscopy findings. Multiple polypoid lesions of 2-3 mm in diameter were seen in the descending portion of the duodenum (A). Various large and small polypoid lesions were seen in the antrum of the stomach (B; lesser curvature side, C; extensive curvature side), accompanied by a change in white tone at the center. Mucosal folds in the corpus of the stomach at the extensive curvature side were slightly thickened, and its surface had changed to a white tone (D). After treatment, numerous white scars were found, and the thickened mucosal folds were improved in the stomach (E).