Prevalence and Incidence of Leiomyosarcoma
Leiomyosarcoma: Rare Disease
Leiomyosarcoma is listed as a "rare disease" by the Office of
Rare Diseases (ORD) of the National Institutes of Health
(NIH). This means that Leiomyosarcoma, or a subtype of Leiomyosarcoma,
affects less than 200,000 people in the US population.
Ophanet, who are a consortium of European partners,
currently defines a condition rare when if affects 1 person per 2,000.
They list Leiomyosarcoma as a "rare disease".
More information about Leiomyosarcoma is available from Orphanet
About prevalence and incidence statistics:
The term 'prevalence' of Leiomyosarcoma usually refers to the estimated population
of people who are managing Leiomyosarcoma at any given time.
The term 'incidence' of Leiomyosarcoma refers to the annual diagnosis rate,
or the number of new cases of Leiomyosarcoma diagnosed each year.
Hence, these two statistics types can differ:
a short-lived disease like flu can have high annual incidence but low prevalence,
but a life-long disease like diabetes has a low annual incidence but high prevalence.
For more information see about prevalence and incidence statistics.