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Mismatch Repair Cancer Syndrome 4 C5436817

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

A genetic condition that increases risk of developing cancer due to impaired DNA repair. It affects children and requires regular cancer screenings. Early detection and monitoring are essential.

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
severe
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Warning signs - seek immediate care

!

Abnormal uterine bleeding

Generalized symptoms

(oncologic)

Significant symptoms that substantially affect daily functioning.

Frequency: Common at all stages

Pelvic pain

(oncologic)

Weight loss

(oncologic)

Fatigue

(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

Drug therapy with clinical monitoring

Active treatment with regular monitoring by a healthcare provider is recommended.

medication
2

Enhanced Surveillance Program

Regular colonoscopy and upper endoscopy screening at shortened intervals to detect malignancies at early stages. Includes periodic imaging and tumor marker monitoring.

monitoring
3

Prophylactic Colectomy

Surgical removal of the colon before cancer develops in individuals with confirmed genetic mutations. Significantly reduces colorectal cancer risk when performed electively.

surgical

Additional treatment options

Aspirin Chemoprevention

Long-term low-dose aspirin therapy has shown promise in reducing adenoma and cancer development in Lynch syndrome patients through anti-inflammatory mechanisms.

medication

Mediterranean Diet Protocol

High-fiber, plant-based dietary pattern with limited red meat and processed foods. May reduce colorectal polyp formation through anti-inflammatory and antioxidant effects.

dietary

Genetic Counseling Support

Ongoing psychological support addressing anxiety, family communication about genetic risk, and coping strategies for lifelong cancer surveillance needs.

psychological

When to seek medical help

Recognize when you need immediate medical attention.

See a doctor within 24 hours

Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.

Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Mismatch Repair Cancer Syndrome 4 C5436817?

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

general

Medication Comparisons

Compare medications used to treat Mismatch Repair Cancer Syndrome 4 C5436817. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

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