11 January 2021
: Case report 
A Case of Duodenal Neuroendocrine Tumor Accompanied by Gastrointestinal Stromal Tumors in Type 1 Neurofibromatosis Complicated by Life-Threatening Vascular Lesions
Challenging differential diagnosis, Unusual or unexpected effect of treatment, Diagnostic / therapeutic accidents, Rare disease, Adverse events of drug therapy, Educational Purpose (only if useful for a systematic review or synthesis)
Naoki Makita1ABCDEF*, Masato Kayahara1BDEF, Shunsuke Kano1D, Masayoshi Munemoto1D, Yasumichi Yagi1D, Ichiro Onishi1DF, Atsuhiro Kawashima2CDDOI: 10.12659/AJCR.927562
Am J Case Rep 2021; 22:e927562
Figure 1. A contrast-enhanced abdominal computed tomography showing that the duodenal tumor was a 4-cm mass-like wall thickening centered on the submucosa (arrowhead) (A). Gastroduodenoscopy revealed a partially stenosed irregular mass in the postbulbous area of the duodenum (arrow) (B).