Task: Answer Verification
Input (English): Question: Does vascular density predict future metastatic disease in clinical stage 1 non-seminomatous germ cell tumours of the testis?
Answer: We confirmed the value of vascular invasion as a prognostic marker in stage 1 NSGCT. Tumour vessel density was of no prognostic value. Two factors may contribute to this. First, there was wide variation of vessel density between different blocks of a tumour. Second, the most vascular area in a tumour was frequently in low-grade tumour.
Output (English): no