The most common form of capillary angioma is the naevus or congenital
telangiectasis.
#Naevus.#--A naevus is a collection of dilated capillaries, the afferent
arterioles and the efferent venules of which often share in the
dilatation. Little is known regarding the _etiology_ of naevi beyond the
fact that they are of congenital origin. They often escape notice until
the child is some days old, but attention is usually drawn to them
within a fortnight of birth. For practical purposes the most useful
classification of naevi is into the cutaneous, the subcutaneous, and the
mixed forms.
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