Etiology • An abnormal venous dilatation • Congenital or from damage to vessel wall (trauma, ultraviolet
light) • Occur with increasing frequency over 40 years of age
Clinical Presentation • Blue, lobulated surface • Painless, evolves slowly • Common on lower lip, sublingual regions • Blanches with compression (diascopy) • May become thrombosed
Diagnosis • Clinical appearance • Histologic viewing of large-caliber, thin-walled vein
light) • Occur with increasing frequency over 40 years of age
Clinical Presentation • Blue, lobulated surface • Painless, evolves slowly • Common on lower lip, sublingual regions • Blanches with compression (diascopy) • May become thrombosed
Diagnosis • Clinical appearance • Histologic viewing of large-caliber, thin-walled vein
Differential Diagnosis • Mucocele • Vascular neoplasm • Blue rubber bleb nevus syndrome • Hereditary hemorrhagic telangiectasia (Rendu-Osler-Weber
syndrome)
Treatment • Observation only, if stable • Elimination by excision, sclerotherapy, or laser ablation
Prognosis • Excellent