We conclude that a 5x5 Gy short-term preoperative radiotherapy leads to a reduction in the number of lymph nodes in TME/PME specimens. Because neoadjuvant therapy in rectal cancer for T(2) and T(3) tumors has advanced a new therapeutic standard procedure, in the future, less lymph nodes will be detected in TME/PME specimens. This might influence the required number of lymph nodes in current staging systems for rectal cancer in the future.

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Continuous extracranial radiosurgery can be performed for small peripheral lung tumors or metastases and is optimizing the conventional procedure. It is of special interest to clinics with restricted CT capacity.