[Illustration: FIG. 100.--Sebaceous Horn growing from Auricle.
(Dr. Kenneth Maclachan's case.)]
#New Growths in the Skin and Subcutaneous Tissue.#--The _Angioma_ has
been described with diseases of blood vessels. _Fibroma._--Various types
of fibroma occur in the skin. A soft pedunculated fibroma, about the
size of a pea, is commonly met with, especially on the neck and trunk;
it is usually solitary, and is easily removed with scissors. The
multiple, soft fibroma known as _molluscum fibrosum_, which depends upon
a neuro-fibromatosis of the cutaneous nerves, is described with the
tumours of nerves. Hard fibromas occurring singly or in groups may be
met with, especially in the skin of the buttock, and may present a local
malignancy, recurring after removal like the "recurrent fibroid" of
Paget. The "painful subcutaneous nodule" is a solitary fibroma related
to one of the cutaneous nerves. The hard fibroma known as _keloid_ is
described with the affections of scars.
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