Osteosarcoma with Sizeable Pleural Deposit Diagnosed on Conventional Bone Scanning

Abstract

A 19 years old girl presented with big swelling in lower left thigh associated with right sided chest pain. Bone scan revealed big hypervascular lesion of intense tracer uptake in a heterogenous pattern with multiple relative  photopenic areas and margin disruption located in lower left femur,its scintigraphic features are highly impressive of osteosarcoma. This is associated with multiple variable sized areas of active Tc99m MDP uptake in both lung fields, more on the right side. One of the chest lesions is seated in lower outer right chest, SPECT data confirmed presence of multiple Tc99m MDP avid pulmonary deposits with lower right sizeable pleural deposit.