Detailed Instructions: Given a passage with a question and an answer to that question, classify if the answer actually answers the question into 'yes' or 'no'. Output 'yes' if the answer answers the question and output 'no' if the answer does not answer the question.
Problem:Question: Is detection of micrometastatic prostate cancer cells in the lymph nodes by reverse transcriptase polymerase chain reaction predictive of biochemical recurrence in pathological stage T2 prostate cancer?
Answer: Nested RT-PCR of the lymph nodes may be a useful pretreatment prognostic test for patients undergoing radical prostatectomy. Further research is necessary using a much larger number of patients with a longer followup.
Solution:
yes