| Health / Medical Topics |
Appendix Enterochromaffin Cell Serotonin-Producing Neuroendocrine Tumor
A well differentiated neuroendocrine tumor arising from the wall of the appendix. It is characterized by the presence of neoplastic cells forming round solid nests and occasionally glandular structures. The majority of the cases are asymptomatic, and they are found incidentally in appendectomy specimens. The majority of the tumors are located in the distal end of the appendix and they are enterochromaffin-cell carcinoid tumors producing serotonin. Most cases show morphologic evidence of appendiceal wall and lymphatic vessel invasion by tumor cells. Despite the morphologic evidence of invasion, appendiceal carcinoid tumors only infrequently produce lymph node or distant metastases. (NCI Thesaurus)
YOU MAY ALSO LIKE
A malignant epithelial neoplasm arising from the appendix. The vast majority of the cases are adenocarcinomas.
A circumscribed neoplasm arising from the glandular epithelium of the appendix. Morphologically, it is characterized by a proliferation of neoplastic glandular…
A malignant neoplasm arising from the glandular epithelium of the appendix with invasion of the appendiceal wall beyond the muscularis mucosa. …
A small, fingerlike pouch that sticks out from the cecum (the first part of the large intestine near the end of the…
The part of the skeleton that includes the bones of the upper and lower limbs.
The appendix is a small, tube-like organ attached to the first part of the large intestine. It is located in the lower…
