Fig. 4From: A combination of single-balloon enteroscopy-assisted laparoscopy and endoscopic mucosal resection for treating gastrointestinal venous malformations in blue rubber bleb nevus syndrome: a case reportHistopathologic findings of the lesions. a The hematoxylin and eosin (H&E) staining of blood-filled ectatic vessels (5 × 10); b The H&E staining of blood-filled ectatic vessels (10 × 10); c The endothelial cells surrounded by thin connective tissues that were CD34 positive (40 × 10)Back to article page