Fig. 3From: Osteosclerotic change as a therapeutic response to gefitinib in symptomatic non-small cell lung cancer bone metastasisRepresentative computed tomography (CT) scans demonstrate evaluation criteria. CT scans obtained before treatment shows lytic metastasis. After some treatment, the scans showed “partial filling in,” categorized as partial response (PR), and “complete filling in,” categorized as complete response (CR)Back to article page