Blue Rubber Bleb Nevus Syndrome (Bean Syndrome) | Figure 2.28 A: Rubinstein–Taybi syndrome B: Blue rubber bleb syndrome (Courtesy of Dr. Michelle B. Bain) C: Cornelia de Lange syndrome (Courtesy of Dr. Karen Bryson) |
(Figure 2.28B) - Sporadic (sometimes AD), TIE2 gene mutation (tyrosine kinase activating mutation)
- Multiple tender cutaneous and GI venous malformations
- Presents with compressible, blue papulonodules on trunk/arms, painful with ↑ lesional hyperhidrosis, + nocturnal pain characteristic, GI malformations can cause GI bleeding, intussusception
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