[Structures and volume standards in colon and rectal surgery].

Applying the principle "practice makes perfect" to interventional medicine would mean that surgeons and departments with high treatment volumes for special procedures should have better results than low-volume institutions. In the last three decades several studies were published dealing with the association of therapy volume and treatment quality, e.g. in oncologic and vascular surgery as well as interventional cardiology. Concerning colorectal cancer it has been shown that an individual surgeon's case load is important but by far not the only therapy-associated prognostic factor. For example interdisciplinarity and multimodality including adequate pathological classification are no less important. For continual improvement of clinical outcome, quality management and control will grow in importance. Thus, it is necessary to develop structures and to specify standards for colorectal surgery. Based on the data available it is not yet possible to define minimum volumes for colorectal surgery.