• Strawberry hemangioma 
    • benign capillary hemangioma of infancy
      • will first grow and then will spontaneously regress by age 8
  • Cherry hemangioma  
    • benign capillary hemangioma 
    • ↑ in frequency with age  
      • permanent
  • Cavernous hemangioma
    • benign tumor of liver and spleen
      • risk of rupture with ↑ size
    • can also be found in the brain and retina with Von-Hippel-Lindau syndrome
  • Pyogenic granuloma  
    • pedunculated capillary hemangioma
      • easily ulcerates and bleeds
    • associated with trauma and pregnancy
      • regress post-partum with ↓ estrogen
  • Angiosarcoma
    • liver malignancy with poor prognosis
    • associated with vinyl chloride, arsenic, and ThO2 (Thorotrast) exposure
      • remember: exposure to a VAT of chemicals
  • Lymphangiosarcoma
    • lymphatic malignancy
    • associated with long-standing lymphedema
      • e.g., post-radical mastectomy 
  • Kaposi's sarcoma  
    • endothelial (as well as primitive mesenchymal) malignancy of the skin
    • associated with HHV-8 and HIV
    • progression
      • flat red/purple lesion → raised lesion → ulcerating nodule
Other Vascular Tumors
  • Cystic hygroma  
    • lymphangioma of the neck
      • responsible for the "webbed-neck" in Turner's syndrome
  • Glomus tumor  
    • benign, painful, red-blue tumor formed from arteriovenous shunts
      • found under the fingernails
    • derived from smooth muscle cells of glomus body
      • involved in temperature regulation which can shunt blood towards or away from the superficial skin
  • Bacillary angiomatosis 
    • benign capillary skin papules resulting from a cutaneous Bartonella henselae infection
      • gram negative bacteria also responsible for Cat-scratch disease
    • seen in AIDS patients
      • frequently mistaken for Kaposi's sarcoma

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