[Echography in sinus diseases (author's transl)].

With high frequency echography (8 MHz) rhinogenic processes can be examined after they have penetrated the bony wall. Thus extension and form of bony defects can be determined and the degree of soft tissue involvement in the orbit can be evaluated. A scan echography provides tissue differentiation; it is a safe method bearing no risk for the patient and can be repeated any time. Whenever orbital involvement in cases of sinusitis is suspected, a scan echography of the orbit and adjacent sinuses is recommended.