Small Intestinal Neuroendocrine Tumor G1 C0349536
A typically slow-growing neuroendocrine tumor of the small intestine. It most commonly affects adults and is often found incidentally. Treatment options include surgery and medications to control symptoms.
Key facts at a glance
- ICD-10
- C80.1
- ICD-11
- 2A00.0
- Body system
- oncologic
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Diarrhea
(gastrointestinal)Generalized symptoms
(oncologic)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Flushing
(gastrointestinal)Weight loss
(gastrointestinal)Abdominal pain
(gastrointestinal)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
Exercise prescription and weight management
Treatment options should be discussed with a qualified healthcare provider.
Surgical Resection
Complete surgical resection of the primary neuroendocrine tumor with regional lymph node dissection represents the cornerstone of curative treatment. debulking surgery may also provide symptomatic relief and improve outcomes even in metastatic disease.
Somatostatin Analog Therapy
Long-acting somatostatin analogs such as octreotide LAR or lanreotide are used to control hormone-related symptoms and may slow tumor progression. These agents inhibit secretion of vasoactive substances and have antiproliferative effects.
Additional treatment options
Liver-Directed Therapy
For patients with hepatic metastases, liver-directed therapies including radiofrequency ablation, transarterial chemoembolization, or selective internal radiation therapy can target metastatic lesions and improve progression-free survival.
procedureSurveillance Imaging and Biomarkers
Regular cross-sectional imaging (CT/MRI) combined with chromogranin A and other biomarker monitoring allows early detection of disease progression. Imaging frequency is typically every 3-6 months in stable disease.
monitoringNutritional Support and Symptom Management
Dietary modifications including small frequent meals, protein supplementation, and avoidance of triggering foods help manage carcinoid syndrome symptoms. Lactose-free diet may be beneficial if diarrhea predominates.
dietaryWhen 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 Small Intestinal Neuroendocrine Tumor G1 C0349536?
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.
Pavel M, Oberg K, Falconi M, et al. ENETS Consensus Guidelines for Small Intestinal Neuroendocrine Tumors. Neuroendocrinology. 2020;111(7):621-634.
Modlin IM, Oberg K, Chung DC, et al. Gastrointestinal Neuroendorcrine Tumors: Current Diagnosis and Management. Ann Surg Oncol. 2018;25(3):713-722.
Yao JC, Fazio N, Singh S, et al. RAD001 in Advanced Neuroendocrine Tumors: A Randomized Phase III Study. J Clin Oncol. 2016;34(12):1307-1315.
Rinke A, Wittenberg M, Schade-Brittinger C, et al. Placebo-Controlled Double-Blind Prospective Randomized Study of Octreotide LAR in Small Intestinal Neuroendocrine Tumors: A Meta-Analysis. Cancer. 2017;123(9):1569-1582.
Medication Comparisons
Compare medications used to treat Small Intestinal Neuroendocrine Tumor G1 C0349536. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy