PLEURAL METASTASIS OF A PEDIATRIC OSTEOSARCOMA

Osteosarcoma is the most common primary bone tumor in children and young adults. Although osteosarcoma is a tumor with a great metastatic potential, mainly to the lung; pleural metastasis in patients with osteosarcoma are rarely reported. We present a case of 16 years-old male with a pleural metastasis of a tibial osteosarcoma diagnosed 4years earlier. He was submitted to a left thoracotomy and intra-operatively a pleural mass and a left upper lobe lesion was identified. Video-assisted resection of the extra-pulmonary mass and a wedge resection of the left upper lobe lesion was performed. The surgery was uneventful. The patient is clinically well, asymptomatic, maintains active surveillance.