what is the blue rubber bleb syndrome?

Question

How does it spread, and how does it affect the human body?

Answer 1

"Blue rubber bleb nevus syndrome (or "BRBNS", or "blue rubber bleb syndrome, or "blue rubber-bleb nevus", or "Bean syndrome") is a rare disorder that consists mainly of abnormal blood vessels affecting the gastrointestinal tract.

BRBNS is a venous malformation, formerly, though incorrectly, thought to be related to the hemangioma. It caries significant potential for serious or fatal bleeding. Lesions are most commonly found on the skin and in the small intestine and distal large bowel. The causes of this syndrome are unknown. Not more than a few hundred cases have been described worldwide.

It was first described by Gascoyen in 1860. In 1958 William Bennett Bean described the lesions further and came up with the term BRBNS, chosen because the 'cutaneous hemangiomas have the look and feel of rubber nipples'."

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Answer 2

AKA Blue rubber bleb nevus syndrome.

Basically small premalignant melanoma (nevi) which effect the distal GI tract.