Re:hemangiomas and siblings
Vascular lesions such as hemangiomas are thought to be "familial" meaning they run in families. My daughter had one, my twin sister had one, my niece and two of my cousins. On the other hand, vascular malformations are often random, although once in a while I hear of a family that has sibling or relatives with a port wine stain. No one knows for sure, but we are working on some exciting research and hope to unravel this mystery over the next few years.
President and Founder, VBF