结论：仔细的术前评估和精细的手术技术是避免术中大出血的关键。
Conclusions Careful preoperative assessment and eaquisite surgical procedure were the key to avoid heavy bleeding during the operation.
结论：仔细的术前评估和精细的手术技术是避免术中大出血的关键。
Conclusions Careful preoperative assessment and eaquisite surgical procedure were the key to avoid heavy bleeding during the operation.
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