Angiomas of Skin Flashcards
Obj 2.6
Angiomas
They are vascular anomalies that are specifically developmental defects in which some transitory and/or surplus primitive blood or lymphatic vessels persist.
Those composed of blood vessels may be mainly arterial, venous, or cavernous–but are often mixed types.
True angiomas are benign tumors of endothelial cells, usually composed of solid or hollow cords; the hollow cords contain blood.
Cystic Lymphangiomas or Cystic Hygromas
Angiomas composed of lymphatics
Nevus Flammeus
flat, pink or red, flame like blotch that often appears on the posterior surface of the neck
Port-Wine Stain hemangioma
larger, darker angioma than a nevus flammeus and is nearly always anterior or lateral on the face and/or neck.
Sharply demarcated when near median plane.
When in the area of distribution of the trigeminal nerve, it is sometimes associated with a similar type of angioma of the meninges of the brain and seizures at birth Sturge-Weber Syndrome)
Common Angioma
Pinkish/red blotch that may cross the median plane (unlike Port-Wine Stain hemangioma)