pulmonary haematoma

Ewing sarcoma usually develops in the second decade of life as a primary osseous malignancy. An extraskeletal primary source of this condition from the lung parenchyma is extremely uncommon. We report the case of a 33-year old man with primary Ewing sarcoma of the lung diagnosed upon postsurgical histological examination. Initially presenting with unilateral pleural effusion, our patient underwent various investigations before final diagnosis.