Cutaneous horns are made of the same
protein we have in our nails and hair—
keratin. It is also the same protein that
makes up hooves and feathers.
They
are quite common in older people and
can be cancerous or benign, but it is
very seldom that they grow to be as
large as Zhang Ruifang’s. The 102-year
old grandmother’s growth has already
grown to 6cm in length and another is
busy forming on the other side of her
forehead. These growths can be
removed but it doesn’t treat the
underlying cause which can be
anything from common warts to actinic
keratoses.
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