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Pulmonary blastoma: presentation of two atypical cases and review of the literature

Departments of ¹ Radiology and ² Pathology, Northern General Hospital, Herries Road, Sheffield S5 7AU, UK

Correspondence: Dr S Matthews, Consultant Radiologist

Pulmonary blastoma is a relatively rare aggressive adult malignancy. The clinical and radiographic features of two cases are described and the literature reviewed. Pulmonary blastoma usually presents radiologically as a well-defined mass lesion on chest radiography, which may be large enough to completely opacify the hemithorax and cause mediastinal shift. On CT, pulmonary blastoma is seen as a mixed solid and cystic lesion with variable contrast enhancement and a necrotic centre. Pleural effusion may be present but is not the predominant abnormality. Our cases are unusual as recurrent pleural effusions in the absence of a significant lung mass were the presenting findings.