Take extra care when performing digital examinations of fracture fragments or wounds containing wires or sharp instrumentation 当用手指探查骨折碎片或有钢丝及其他锐利器械的伤口时，要格外小心。
3.
Conclusion : lack of the knowledge of rectal carcinoma and neglecting rectal digital examination and auxiliary exploration were the main reasons of misdiagnosis 结论：对直肠癌缺乏警惕、对本病认识不足、不重视直肠指检及忽视辅助检查是造成误诊的主要原因。
