Tumors of blood and lymph

Question 1

Hemangiomas

Answer 1

Tumors of blood vessels. Found in skin as small, red, blood-filled lesions composed of capillary-sized blood vessels. Rarely malignant. Most resolve without therapy, but corticosteriods may be helpful

Examples: port-wine stain, nevus flammeus

Question 2

spider angioma

Answer 2

A kind of hemangioma. acquired, bright red, pulsatile vascular growths with a central arteriole from which small vessels radiate outward (like a spider!). Common in face and chest
Caused by high estrogen (pregnant women, pts with liver cirrhosis who can’t process estrogen) regress when estrogen declines

Question 3

cavernous hemangioma

Answer 3

larger vessels, in deep tissue, such as brain and liver. can bleed spontaneously

Question 4

pyogenic granuloma

Answer 4

often confused w hemangioma, but this is different and it’s malignant wound healing

Question 5

lymphangioma

Answer 5

collections of lymphatic capillaries. Sub Q tissues of head and neck.
benign

Question 6

Kaposi sarcoma

Answer 6

Malignant vascular tumor. Caused by human herpesvirus-8 (KSHV). Skin tumor composed of purple nodules. May balloon into bloody masses in lymph nodes. Immunocompromised patients (AIDS).
TX: antiretrovirals, chemo, radiation, cryotherapy

Question 7

Kinds of KS

Answer 7

Chronic: non-AIDS
African: AFricans with lymphoma. Aggressive
AIDS-related KS: most common tumor of aids patients in the us

Question 8

Angiosarcoma

Answer 8

Malignant tumor of vascular endothelial cells that occurs most frequently in the skin, breast, soft tissue, and liver. Arise when:

• irradiation
• prolonged chemical exposure
• chronic lymphadema