Journal of Research in Medical Sciences1735-199511520061226Cervical thymic cyst, a case report and review of the literature339342ENMohammad HosseinSaneiDepartment of Pathology, Isfahan University of Medical Sciences. sanei@med.mui.ac.irNezameddinBerjisAlirezaMesbah2006020320060615Cervical thymic cyst is not a common pathology encountered in either an adult or a child. Our case presentation is of an infant girl with a right cervical soft mass. It was totally resected and histological analysis revealed a thymic cyst. The diagnosis of thymic cyst is not possible prior to histological examination. Therefore, in children the disorder should be considered as a differential diagnosis of each cervical soft tissue mass and evaluation of mediastinum should be done for the presence of thymic tissue. KEY WORDS: Cervical thymic cyst, neck mass, children.