Prevalence and Incidence of Medulloblastoma
Medulloblastoma: Rare Disease
Medulloblastoma is listed as a "rare disease" by the Office of
Rare Diseases (ORD) of the National Institutes of Health
(NIH). This means that Medulloblastoma, or a subtype of Medulloblastoma,
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 Medulloblastoma as a "rare disease".
More information about Medulloblastoma is available from Orphanet
About prevalence and incidence statistics:
The term 'prevalence' of Medulloblastoma usually refers to the estimated population
of people who are managing Medulloblastoma at any given time.
The term 'incidence' of Medulloblastoma refers to the annual diagnosis rate,
or the number of new cases of Medulloblastoma 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.