Retrospective Study
Copyright ©The Author(s) 2020.
World J Gastrointest Endosc. Oct 16, 2020; 12(10): 355-364
Published online Oct 16, 2020. doi: 10.4253/wjge.v12.i10.355
Figure 1
Figure 1 Endoscopic ultrasound and hematoxylin/eosin staining. A: Pancreatic head mass with fine needle aspiration; B: Hematoxylin/eosin staining: Shows cellular tumor tissue formed by small cells with focal resetting and tumor cell nuclei show fine chromatin with a little cytoplasm (Hematoxylin/eosin, 400 ×); C: Shows moderate membranous reaction of the tumor cells (CD56, 400 ×); and D: Show positive nuclear staining in a few tumor cells (< 2%) (Ki-67, 400 ×); consistent with a well-differentiated neuroendocrine tumor.
Figure 2
Figure 2 Endoscopic ultrasound. A and B: Solid pseudopapillary neoplasm with fine needle aspiration; C and D: Mediastinal lymph nodes with multiple splenic focal lesions diagnosed as lymphoma.
Figure 3
Figure 3 Endoscopic ultrasound. A: Tracheal fibroma separable from the esophageal wall (arrow); B: Antral duplication cyst; C: Rectal gastrointestinal stromal tumor with fine needle aspiration; and D: Mediastinal bronchogenic cyst.