2B81.2 Neuroendocrine neoplasms of appendix

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

Malignant neoplasms with neuroendocrine differentiation that arise in the appendix. Most are well differentiated neuroendocrine tumours (low and intermediate grade), i.e. carcinoids. Poorly differentiated neuroendocrine carcinomas (high grade) are exceedingly rare.

postcoordination

synonyms

• Neuroendocrine neoplasms of appendix
• Neuroendocrine tumour of appendix
• NET- [neuroendocrine tumour] of appendix
• carcinoid tumour of appendix
• appendiceal carcinoid tumour
• Neuroendocrine tumour, G1 of appendix
• Neuroendocrine tumour, G2 of appendix
• Neuroendocrine carcinoma of appendix
• NEC - [neuroendocrine carcinoma] of appendix
• Large cell neuroendocrine carcinoma of appendix
• Small cell neuroendocrine carcinoma of appendix
• Other specified neuroendocrine neoplasms of appendix
• Mixed adenoneuroendocrine carcinoma of appendix

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