Caliber Persitent Labial Artery: An Unknown Vascular Lesion or a Mistaken Arteriovenous Malformation

Introduction In Caliber persistent labial artery (CPLA) can be defined as a vascular anomaly, which consists in the absence of distal tapering and branching of an artery when it penetrates in the submucosal tissue. The term “Caliber Persistent Artery” was first coiled by Voth [1] in 1962, and resembles the well-known gastric Dieulafoy [2] lesion. It was not until 1962 that Howell [3] described the first case of Persistent Caliber “Labial Artery”. Reported incidence in large samples of healthy population can range between 3-5% and has equal gender distribution [3-12]. Lesion presents most frequently in the fifth decade of life. To date less than 20 publications are available, all with few reported cases and scarce imaging correlation.