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Cowden Syndrome 5 C3554518

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

A hereditary disorder characterized by numerous benign growths throughout the body. Patients need lifelong monitoring for cancer risk. Treatment involves removing concerning growths and cancer surveillance.

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

Key facts at a glance

ICD-10
C96.9
ICD-11
2A00.0
Body system
oncologic
Severity
moderate
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Generalized symptoms

(oncologic)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Macrocephaly

(neurologic)

Thyroid nodules

(endocrine)

Mucocutaneous papillomatous papules

(dermatologic)

Colorectal polyps

(gastrointestinal)

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

Breast Cancer Screening Protocol

Age-appropriate breast imaging beginning in early adulthood including clinical breast exams, mammography, and breast MRI to maximize early detection in high-risk tissue.

monitoring
2

Lifestyle modification and dietary intervention

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
3

Endometrial Cancer Surveillance

Regular pelvic ultrasound and endometrial sampling for women to detect early endometrial pathology, as uterine cancer risk is elevated in Cowden syndrome.

monitoring

Additional treatment options

Risk-Reducing Hysterectomy Evaluation

Prophylactic removal of uterus and ovaries after childbearing is completed for significant risk reduction, particularly in patients with strong family history of gynecologic cancers.

surgical

PTEN Mutation Carrier Education Program

Education on syndrome manifestations, warning signs, and importance of adherence to surveillance schedules to empower patients in their own healthcare management.

lifestyle

Cancer Anxiety Management

Therapeutic interventions including cognitive behavioral therapy to address heightened health anxiety and fear of cancer diagnosis common among mutation carriers.

psychological

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 Cowden Syndrome 5 C3554518?

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

Miesfeldt S, Eng C. NCCN Clinical Practice Guidelines in Oncology: Genetic/Familial High-Risk Assessment: Breast, Ovarian, and Pancreatic Cancer. JNCCN. 2023.

guideline2023
2

Tan MH, Mester JL, Ngeyi J, Eng C. The diagnostic and therapeutic implications of PTEN mutations in Cowden syndrome and other related disorders. Hum Mol Genet. 2022.

review2022
3

Pilarski R, Burt R, Kohlmann W, Phoon C. PTEN mutation analysis and long-term clinical follow-up in patients with Bannayan-Riley-Ruvalcaba syndrome. Fam Cancer. 2021.

clinical_trial2021
4

Eng L, Blanke CD. Management of hereditary cancer syndromes: A comprehensive review for the practicing oncologist. Oncology. 2020.

other2020

Medication Comparisons

Compare medications used to treat Cowden Syndrome 5 C3554518. 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