Pulmonary metastasis of osteosarcoma: multiple presentations in a single patient

Abstract

Osteosarcomas are the most common primary bone tumors. Approximately 20% of patients with osteosarcoma present metastatic disease at the time of diagnosis, with the lung being the main organ affected. The early diagnosis of pulmonary metastasis may be critical for planning effective therapy. For this reason, chest CT screening should be considered. Usually, pulmonary metastases appear as multiple rounded nodules of various sizes, predominating in the lower portions of the lungs and sparing the apices. However, they may have an atypical presentation. Herein, we describe an unusual case in which multiple atypical lung metastases were detected during treatment in a young male with femoral osteosarcoma