dermatofibroma

Question 1

manif

Answer 1

■ Adermato broma is a very common, button-like dermal nodule, usually occurring on the extremities.
■ Important only because o its cosmetic appearance or its being mistaken or other lesions, such as
malignant melanoma when it is pigmented.
■ Considered to represent late histiocytic reaction to an arthropod bite.
■ Asymptomatic nodule (Fig. 9-48), 3 to 10 mm in diameter, domed but also sometimes depressed
below surrounding skin. Sur ace dull, shiny or scaly

Question 2

sign

Answer 2

Firm, color viarable—skin-colored, pink (Fig.9-48A),brownordarkchocolatebrown(Fig.9-48B);bordersillde ned.Dimplesign:lateral compression produces a “dimple”(

Question 3

tx

Answer 3

■ Appears gradually over several months and persists without urther increase in size or years but may
regress spontaneously.
■ Treatment not necessary. Excision produces scar, cryosurgery with cotton tip applicator usually has
to be repeated and produces a cosmetically more acceptable scar.