Figure 7.

A 17-month-old boy with Stage IV neuroblastoma who presented with fatigue and periorbital swelling. (a) Plain radiography of the skull shows ill-defined lucency (arrow) over left periorbital bone. (b) Transverse ultrasound of abdomen shows an echogenic mass (m) at left adrenal bed with enlarged para-aortic lymph node (arrowhead). (c) Axial post-contrast CT of the abdomen shows a large mass (T) in the retroperitoneum with small amount of tumoural punctuate calcifications (arrows). The major vessels are encased. Diffuse liver metastases (black arrows) are also noted. (d) Metaiodobenzylguanidine scintigraphy shows increase in tracer uptake over left orbital region (black arrow). There is also intense uptake in the primary abdominal tumour (white arrow).