The condition is relatively rare and goes away without treatment.

Such cases are relatively rare, but the following have been reported.

Such changes were relatively rare, occurring about once a century.

It has been noted to be a relatively rare species.

As a result, the type was relatively rare until the 1870s.

In practice it is relatively rare for all the different sources to be taken into account before an order.

Other relatively rare conditions have been reported in association with this disease.

California's move was a relatively rare instance of a state actually taking money from a fund.

Others find things are worse but this is relatively rare.

But eating out was still a relatively rare family event.