Behcet's syndrome represents a multisystemic disease with vasculitic c
hanges. We here describe a patient with Dieulafoy's ulcer and oral, ge
nital and bronchial mucosal lesions who met the criteria of incomplete
Behcet's syndrome. The rare observation of Behcet's syndrome presenti
ng with Dieulafoy's ulcer in our patient raises the question as to whe
ther this type of ulcer, usually caused by a developmental malformatio
n ol a submucosal gastric artery, may occasionally be due also to subm
ucosal aneurysms that result from a vascular inflammation.