Appendix Low Grade Intraepithelial Neoplasia

A precancerous intraepithelial neoplastic lesion that affects the appendix. It is characterized by the presence of mild dysplasia and mild architectural alterations of the mucosal epithelium. There is no evidence of invasion. (NCI Thesaurus)

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Appendix Lipoma

A benign adipose tissue neoplasm involving the wall of the appendix.

Appendix Leiomyosarcoma

A rare leiomyosarcoma that arises from the appendiceal wall.

Appendix Leiomyoma

A well-circumscribed benign smooth muscle neoplasm arising from the appendix. It is characterized by the presence of spindle cells with cigar-shaped nuclei,…

Appendix Large Cell Neuroendocrine Carcinoma

An aggressive, high-grade and poorly differentiated carcinoma with neuroendocrine differentiation that arises from the appendix. It is characterized by the presence…

Appendix L-Cell Glucagon-Like Peptide-Producing Neuroendocrine Tumor

A neuroendocrine tumor arising from the wall of the appendix, producing glucagon-like peptides. Morphologically, it is characterized by the presence of…

Appendix Kaposi Sarcoma

A rare Kaposi sarcoma that arises from the appendiceal wall.