case_images: PMC7784227_01
case_images: Microscopic findings of the resected appendix showed tumour cells infiltration into the muscularis propriae, with two distinct components identified (H&E, 40x).
case_images: JAFES-35-1-102-g001.jpg
case_images: PMC7784227_01_JAFES-35-1-102-g001.jpg
case_images: f0001
case_images: Both tumour groups (Figures 1 and 2) encompass >30% of tumour volume each.
case_images: First component: nests of tumour cells exhibiting uniform, round nuclei with salt and pepper chromatin (arrow head). Second component: goblet cells displaying univacuolated cytoplasm and peripherally compressed nuclei (arrow) (H&E, 200x).
case_images: JAFES-35-1-102-g002.jpg
case_images: PMC7784227_01_JAFES-35-1-102-g002.jpg
case_images: f0002
case_images: Both tumour groups (Figures 1 and 2) encompass >30% of tumour volume each.
case_images: Immunohistochemical findings revealed both components are positive for synaptophysin (A). However, only the goblet cells are positive for CK20 (B) (400x).
case_images: JAFES-35-1-102-g003.jpg
case_images: PMC7784227_01_JAFES-35-1-102-g003.jpg
case_images: f0003
case_images: The Ki-67 proliferation index is <2% (Figure 3).