Explanation: Angiokeratomas are dilated vesels in the dermis. They are related to injury and are benign. Options B and C refer to Fabry disease, which present with angiokeratoma corporis diffusum in a bathing suit distribution. There are 5 different types of angiokeratomas: solitary angiokeratoma as in this case; angiokeratoma of mibelli seen on dorsal fingers and toes in adolescence, angiokeratoma corporis diffusim which are predominantly seen on lower torso and thighs and is seen in Fabry’s disease; angiokeratoma of fordyce on the scrotum or vulva, and angiokeratoma circumscriptum which develop on the lower limb and can be assocaited with Cobb syndrome and Klippel-Trenaunay-Weber Syndrome.
Reference: Hurwitz Clinical Pediatric Dermatology. Paller. 4th ed. Ch 12