A fully formed vascular tumor present at birth that either rapidly involutes (RICH) or remains stable without growth (NICH).
A firm, solitary nodule or plaque present at birth, often with a reddish or violaceous hue, that tends to grow rapidly in infancy.
A bright red ('strawberry') tumor that is absent or subtle at birth, undergoes rapid growth in the first few months, and then slowly involutes.
A firm, rapidly expanding, deep purple or reddish-brown tumor, often associated with profound thrombocytopenia (Kasabach-Merritt phenomenon).
A rapidly growing, bright red, friable papule that bleeds easily and is often surrounded by a collarette of scale.
Multiple red-to-blue nodules and papules, often appearing in a linear arrangement on a limb, and associated with Maffucci syndrome.
A slow-growing, firm, dusky-red to violaceous plaque or nodule that is often tender and may cause Kasabach-Merritt phenomenon.
