Our case is a male patient aged 52 years. The presence of a giant lipoma, arising from mediastinal fatty tissue, weighing 3.9 kg with a maximum diameter of 32 cm, with smooth edges and a capsule, and filling the left hemithorax, and thus causing atelectasia of the left lung, is discussed together with the literature. No case of such a large intrathoracic lipoma has been reported in the literature. (Tur Toraks Der 2008;9:131-2)

Keywords:

Atypical lipoma, mediastinum, thoracotomy