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Angiolipoma of the neck: a case report

Levent Saydam1, Mete Kaan Bozkurt, Mehmet Birol Ugur

  • 1Department of Otolaryngology, Bayindir Medical Center, Sogutozu, Ankara, Turkey. lsaydam@yahoo.com

Ear, Nose, & Throat Journal
|August 4, 2005
PubMed

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Mechanism of Angiogenesis01:10

Mechanism of Angiogenesis

Blood vessel formation starts early during embryonic development, around day 7. In the extraembryonic yolk sac, mesodermal precursor cells called hemangioblast proliferate and differentiate into angioblast. Angioblasts express vascular endothelial growth factor receptor 2 or VEGFR2, which binds VEGF-A, a proangiogenic factor, guiding blood vessel formation. VEGF signaling promotes angioblasts to form a blood island in the developing embryo. Angioblasts further differentiate, giving rise to...