Rare Bilateral Nasopalatine Duct Cysts: A Case Report

The nasopalatine duct cyst (NPDC) is the most common of the non-odontogenic cyst of the jaws. This cysts are usually central or unilateral with no prevalence of side occurrence. The NPDC is the most frequent developmental, nonodontogenic cyst of the jaws. This cyst originates from epithelial remnants from the nasopalatine duct. The cells could be activated spontaneously during life, or are eventually stimulated by the irritating action of various agents (infection, etc.). Generally, patients present without clinical signs and symptoms. Therefore, the tentative diagnosis "nasopalatine duct cyst" is often based on a coincidental radiological finding on a routine panoramic view or occlusal radiograph. The definite diagnosis should be based on clinical, radiological and above all histopathologic findings. The therapy of nasopalatine duct cysts consists of an enucleation of the cystic tissue, only in rare cases a marsupialization needs to be performed. This report describes the appearance and treatment of a rare case of bilateral nasopalatine duct cyst

Symptomatic residual radicular cysts

The clinical, radiological and histological characteristics of 31 symptomatic residual radieular cysts are compared and contrasted with 39 asymptomatic residual cysts. Differences in size and site incidence are demonstrated along with an inversely proportional relationship between radiographic cortication and degree of acute inflammation in the cyst wall. A number of possible aetiological factors, to account for initiation of active inflammation in deeply placed residual cysts have been examined and excluded, but explanation, in most cases, remains paradoxical