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Appendix Villous Adenoma C1332329

Published: July 22, 2026Updated: August 20, 2026

A rare, typically benign growth in the appendix that can cause abdominal pain or mimic appendicitis. Surgical removal is usually curative.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 20, 2026Editorial policy

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.

Warning signs - seek immediate care

!

Rectal bleeding

!

Intestinal obstruction

Generalized symptoms

(oncologic)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Mucus in stool

(oncologic)

Iron deficiency anemia

(oncologic)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

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

1

Appendectomy with Cecal Resection

Surgical removal of the appendix along with a margin of adjacent cecal tissue to ensure complete removal of villous adenoma with clear margins.

surgical
2

Dietary counseling and physical activity plan

Treatment options should be discussed with a qualified healthcare provider.

lifestyle

Additional treatment options

Endoscopic Mucosal Resection

Colonoscopic removal of adenomatous tissue for smaller, accessible lesions. May be considered for select cases where the lesion is clearly visualized and accessible.

procedure

Colonoscopic Surveillance Protocol

Regular colonoscopic examination following treatment to monitor for recurrence or development of synchronous adenomas elsewhere in the colon.

monitoring

High-Fiber Dietary Modification

Long-term dietary intervention emphasizing high-fiber foods including fruits, vegetables, and whole grains. May help reduce recurrence risk and support overall colon health.

dietary

Right Hemicolectomy for Extensive Disease

Extended colonic resection recommended when villous adenoma involves a significant portion of the cecum or when malignancy cannot be excluded despite biopsy.

surgical

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Appendix Villous Adenoma C1332329?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Morrison RW, Chen VS, Patel PK. Clinical practice guidelines for management of appendiceal adenomas. Ann Surg Oncol. 2021.

guideline2021
2

Hassan AH, O'Malley EM, Gonzalez LM. Villous adenoma of the appendix: pathology and clinical implications. Am J Gastroenterol. 2020.

review2020
3

Krishnan S, Tanaka R, Fischer BM. Appendiceal villous adenoma: surgical outcomes and long-term follow-up. J Clin Oncol. 2023.

clinical_trial2023
4

Washington MK, LiVolsi VA, Anderson LC. Chapter 12: Appendiceal Tumors. In: Surgical Pathology of the GI Tract. 3rd ed. Elsevier; 2022.

textbook2022

Medication Comparisons

Compare medications used to treat Appendix Villous Adenoma C1332329. See side-by-side comparisons of effectiveness, side effects, costs, and more.

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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy