Cutaneous Vascular Anomalies

ByDr. Ari Zangana

There are two main categories:- Hemangiomas- Vascular malformations

They are totally different biological entities has been confirmed by immunohistochemical, radiological,

and hemodynamic studies .

Hemangiomas:Antenatal or postnatal endothelial proliferation

Hemangiomas:Grow rapidly during infancy, regress slowly during childhood,

and never appear in adulthood.

Hemangiomas: - Proliferative phase.- Involutional phase.

Proliferative phase:- Hemangioma grow rapidly during 6-8 months reach the maximum size by the end of the first year.

- Skin becomes elevated and red color.

Involutional phase:Color begins to pale and tumor fells less tense.

Hemangiomas:- Typically appear in the neonatal period.- Approximately 80% was a single tumor.- More common in female 3-5:1.- Incidence in white infant is 10%-20%.- Involution is complete in 50% of children by age 5 years.

- Normal skin is restored in about 50% .

Clinical types of hemangiomas:

New Terminology Old Terminology

- Superficial - Capillary- deep -Strawberry

Vascular malformations:

Are errors of embryonic developmentUsually obvious at birthNever regress and often expand

Vascular malformations:

Subcategorized based on predominant channel type and flow characteristics:

- Slow flow- Fast flow

Slow flow:- Capillary and telangiectases- Lymphatic malformation -Venous malformation

Fast flow:

- Arterial malformation- Arteriovenous malformation

Vascular malformations:

New terminology Old terminology Capillary Port wineVenous CavernousLymphatic Lymphangioma Cystic hygroma

Capillary Malformation

Venous Malformation

Arterial malformation