Abstract

A teratoma is a type of germ cell tumor with tissue or organ components resembling normal derivatives of more than one germ layer which is actually present at birth. A 9-years-old boy was admitted with symptoms of breathlessness, fatigue, swelling in right upper parasternal region and slight chest pain on exertion. A large tumor was revealed by thoracic computed tomography with slight displacement of heart and pericardial effusion. The tumor was successfully resected surgically. Histopathology examination confirmed the diagnosis of an intrapericardial mature teratoma. The patient had an uneventful recovery and he is normal after one year follow up. Rarity of the lesion makes this case worthy of documentation.

Keywords: Teratoma; Thoracic computed tomography; Pericardial effusion