Vascular tumors of skin

Question 1

Angiosarcoma

Answer 1

Rare blood vessel malignancy typically occurring in the head, neck, and breast areas

Associated with radiation therapy and chronic post mastectomy lymphedema

Hepatic angiosarcoma associated with vinyl chloride and arsenic exposures

Very aggressive and difficult to resect due to delay in diagnosis.

Question 2

Bacillary angiomatosis

Answer 2

Benign capillary skin papule found in AIDS patients

Caused by Bartonella henselae infections

Frequently mistaken for Kaposi sarcoma, but has *neutrophilic infiltrate.

Question 3

Cherry hemangioma

Answer 3

Benign capillary hemangioma of the elderly

Does not regress

Question 4

Cystic hygroma

Answer 4

Cavernous lymphangioma of the neck

Associated with *Turner syndrome.

Question 5

Glomus tumor

Answer 5

Benign, painful, red-blue tumor, commonly *under fingernails.

Arises from modified smooth
muscle cells of the thermoregulatory glomus body.

Question 6

Kaposi sarcoma

Answer 6

Endothelial malignancy most commonly of the skin, but also mouth, GI tract, and respiratory
tract

Associated with *HHV-8 and HIV.

Frequently mistaken for bacillary angiomatosis, but has
*lymphocytic infiltrate

Question 7

Pyogenic granuloma

Answer 7

Polypoid lobulated capillary hemangioma that can ulcerate and bleed.

Associated with trauma and pregnancy

Question 8

Strawberry hemangioma

Answer 8

Benign capillary hemangioma of infancy

grows rapidly and regresses spontaneously by 5–8 years old