Figure 2

Gross examination of the specimen and mapping of the ureter. (A) Photograph of the separated ureter showing a poorly defined, slightly elevated mass, measuring 3.5 × 3.0 × 0.8 cm (red arrow). Its cut surface was greyish and infiltrative, and it invaded the periureteric fat beyond the muscularis propria. The mass was located 3.6 cm from the distal ureteral resection margin. The remaining mucosa was focally reddish and did not show definitive mass. The kidney contained a unilocular small cyst, 1.1 cm in diameter; the segment of the ureter attached to the kidney was dilated and did not show evidence of tumour. (B) Outline of the tumour, showing the distribution of the small cell carcinoma (blue), urothelial cell carcinoma in situ (red), invasive urothelial cell carcinoma (black) and dysplasia (green).