Figure 3From: Primitive neuroectodermal tumour of the kidney with vena caval and atrial tumour thrombus: a case report Histology of the tumour. Cohesive sheets of small, uniform, primitive, blastema-like malignant cells are separated by fibrous bands. Perivascular rosetting was seen but there was no architectural arrangement (haematoxylin and eosin, magnification ×20).Back to article page