case_images: PMC9941615_01
case_images: PMC9941615_02
case_images: low-grade appendiceal mucinous neoplasia: cystic dilatation of the appendix tip lined by a well differentiated mucinous epithelium with flat and tubulous architecture associated with atrophy of the lymphoid tissue; the muscularis propria and the subserosa tissue were not infiltrated (HEx20)
case_images: PAMJ-43-161-g001.jpg
case_images: PMC9941615_02_PAMJ-43-161-g001.jpg
case_images: F1
case_images: Appendix examination objectified the co-existence of two independent tumors located in the tip, without transitional changes: the first tumor consisted of a LAMN classified as pTis (Figure 1).
case_images: neuroendocrine tumor: granular cytoplasmic positivity to chromogranin (immunohistochemistry, x20)
case_images: PAMJ-43-161-g002.jpg
case_images: PMC9941615_02_PAMJ-43-161-g002.jpg
case_images: F2
case_images: The NET tumor cells displayed granular cytoplasmic positivity to chromogranin A and synaptophysin (Figure 2, Figure 3).
case_images: neuroendocrine tumor: granular cytoplasmic positivity to synaptophysin (immunohistochemistry, x20)
case_images: PAMJ-43-161-g003.jpg
case_images: PMC9941615_02_PAMJ-43-161-g003.jpg
case_images: F3
case_images: The NET tumor cells displayed granular cytoplasmic positivity to chromogranin A and synaptophysin (Figure 2, Figure 3).