[Endosonography in benign and malignant diseases of the anorectum].

Endosonography in benign and malignant diseases of the anorectum Abstract. Sonographic and endosonographic examinations of the rectum and anal canal have the advantage over other imaging techniques of a very high resolution of detail, so that in benign and malignant diseases decisive information can be obtained for further treatment planning. The ultrasound examinations can be performed quickly, but require correspondingly good knowledge and experience in anatomy, pathology and pathological dysfunctions when performing and interpreting them.