Short answer · Medically reviewed summary · Last updated: 2026-05-08
Desmoid tumors are rare, locally aggressive soft tissue tumors with an estimated incidence of 2 to 4 cases per million people per year. While they are considered rare, the true prevalence of Desmoid Tumor is difficult to quantify due to clinical underdiagnosis and the asymptomatic nature of some small, stable cases. How common is Desmoid Tumor in the population? Desmoid Tumor is classified as a rare disease.
1 people with Desmoid Tumor have shared their first-person experience on this question at DiseaseMaps.
What is the prevalence of Desmoid Tumor?
Prevalence of Desmoid Tumor: how many people are affected worldwide, differences by sex and region, with sources.
Desmoid tumors are rare, locally aggressive soft tissue tumors with an estimated incidence of 2 to 4 cases per million people per year. While they are considered rare, the true prevalence of Desmoid Tumor is difficult to quantify due to clinical underdiagnosis and the asymptomatic nature of some small, stable cases.
How common is Desmoid Tumor in the population?
Desmoid Tumor is classified as a rare disease. Because these tumors do not metastasize, they are often excluded from traditional cancer registries, leading to challenges in obtaining precise prevalence data. Current estimates suggest that Desmoid Tumor affects approximately 5 to 6 individuals per million in the general population, though these figures are likely conservative given the potential for misdiagnosis as benign fibromatosis.
What are the demographic patterns of Desmoid Tumor?
Epidemiological data reveals distinct patterns regarding who develops Desmoid Tumor:
- Gender Distribution: While the disease affects both sexes, it is more commonly diagnosed in females, particularly those of reproductive age, which may be linked to the role of estrogen in tumor growth.
- Age of Onset: Desmoid Tumor most frequently presents in adults between the ages of 30 and 40, though it can occur at any age, including in pediatric populations.
- Genetic Association: A subset of cases is associated with Familial Adenomatous Polyposis (FAP), where the risk is significantly higher than in the general population.
Are there geographic or community-based variations?
There is no strong evidence of specific geographic or ethnic clusters for Desmoid Tumor. However, real-world data from platforms like DiseaseMaps.org provides essential context; currently, 50 members have joined the community to share their experiences. This community data is vital, as it helps map the lived experience of those managing Desmoid Tumor, often highlighting symptoms like chronic pain that are under-reported in clinical literature.
Next steps
- Consult with an oncologist or a specialist in sarcoma to discuss your current treatment regimen, including Tamoxifen and Zolodex.
- Connect with the 50 members at DiseaseMaps.org to share experiences regarding symptom management and quality of life.
- Maintain regular monitoring with gastroenterology or colorectal surgery teams if your Desmoid Tumor involves the digestive system.
Medical disclaimer: This content is for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment; always seek the advice of your physician regarding any medical condition.
References
- Orphanet: Rare disease database (ORPHA: 79262).
- NIH GARD (Genetic and Rare Diseases Information Center): Desmoid tumor overview.
- The Desmoid Tumor Research Foundation (DTRF): Patient resources and clinical data.
- PubMed: Recent epidemiological reviews on extra-abdominal and abdominal fibromatosis.
Posted Sep 6, 2017 by Maria 1910
