Infected benign cystic teratoma of the mediastinum.

A young man aged 22 years presented with shortness of breath, left sided chest pain, mild dry cough, peripheral cyanosis, fever and generalized weakness for three years. He was diagnosed as having a large infected cystic mediastinal mass with tricuspid regurgitation and severe pulmonary hypertension. On thoracotomy, one litre of pus was aspirated and tumour was excised and sent for histopathology. Biopsy report revealed benign cystic teratoma. This case is reported to highlight the management of a huge infected benign cystic teratoma which is rarely found.