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(a) Five months prior. Anterior and posterior whole-body skeletal scintigraphy without evidence of inferior vena cava syndrome. Left sacroiliac metastasis was visible at this time point (black arrow). (b) Five months prior. Axial and coronal computed tomography images without evidence of inferior vena cava syndrome. White arrows demonstrate less extensive retroperitoneal adenopathy, with black oval demonstrating patent inferior vena cava as evidenced by contrast opacification
