Unusual histological presentation of a residual cyst: A case report

Abstract

Cystic lesions of jaws are fairly common of which radicular cysts that form as a result of inflammatory changes associated with a non-vital pulp are most frequent. The removal of source of infection by either root canal treatment or extraction of the involved tooth leads to resolution of inflammatory cysts. However, infrequently, certain lesions may persist even after appropriate treatment which are termed as ‘residual cysts’. Although residual cysts are histopathologically indistinguishable from radicular cysts, certain changes may occur owing to removal of the aggravating stimulus which may lead to a varied histopathological picture. The present case report comprises of a residual cyst with a relatively unusual histopathological presentation.