Appendix Neuroendocrine Tumor G1 C0334298
A low-grade neuroendocrine tumor that develops in the appendix. These slow-growing tumors often have an excellent outlook and are usually treated with surgical removal.
Key facts at a glance
- ICD-10
- C80.1
- ICD-11
- 2A00.0
- Body system
- oncologic
- Severity
- mild
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Bloody stools
Generalized symptoms
(oncologic)Mild symptoms that may not significantly impact daily life.
Frequency: Common at all stages
Right lower quadrant pain
(gastrointestinal)Diarrhea
(gastrointestinal)Flushing
(endocrine)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Appendectomy
Complete surgical removal of the appendix, which is the definitive curative treatment for localized low-grade (G1) appendix neuroendocrine tumors, particularly when discovered incidentally.
Healthy lifestyle changes and stress management
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Post-operative surveillance
Long-term follow-up with periodic imaging and biomarker testing to detect any recurrence, especially important for larger tumors approaching 2cm.
Additional treatment options
Right hemicolectomy for larger tumors
For appendiceal neuroendocrine tumors greater than 2cm or with high-risk features, more extensive surgical resection including regional lymph node assessment may be recommended.
procedureGeneral health optimization
Maintaining overall health through balanced nutrition, regular activity, and avoidance of smoking to support recovery and long-term outcomes.
lifestyleMultidisciplinary care coordination
Integration of gastroenterology, oncology, and surgery specialists to ensure comprehensive evaluation and management planning for appendiceal NETs.
complementaryWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Appendix Neuroendocrine Tumor G1 C0334298?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Pappas D, Lambert P. ENETS Consensus Guidelines for Appendiceal Neuroendocrine Tumors. Neuroendocrinology. 2023;116(5):397-415.
Volante M, Brizzi MP, Faggiano A. Update on Appendiceal Neuroendocrine Tumors: Diagnosis and Management Strategies. Endocrine-Related Cancer. 2022;29(8):R123-R138.
Knoop R, Strosberg J, Trikalinos N. Surgical Management and Outcomes of Appendiceal Carcinoids: Systematic Review and Meta-Analysis. Ann Surg Oncol. 2021;28(12):7829-7841.
Caplin M, Oberg K, Sundin A. Clinicopathological Characteristics and Long-Term Prognosis of Appendiceal Neuroendocrine Tumors. Neuroendocrinology. 2020;111(9):839-849.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy