Histopathology. (A) Predominant solid area consisted of cells separated by fibrous bands forming fine lobules. (B) Broad fibrous bands dividing the tumour into prominent lobules. (C) Nest of cells separated by a fine vascular network. (D) Clear-cytoplasm cells forming broad trabeculae. (E) Capsular invasion. (F) Tumour infiltrating renal capsule without renal tissue invasion (renal cortex visible on the left). (G) Central part of the tumour with a large haemorrhage. (H) Medium-diameter artery cross-section obliterated with necrotic tumour mass. (I) Thrombus from the inferior vena cava consisting of tumour mass with necrosis, intermingled with fibrin.
Fulawka et al. Diagnostic Pathology 2014 9:51 doi:10.1186/1746-1596-9-51