[Results of quantitative radionucleid investigations in acute testicular disease (author's transl)].

All publications dealing with tortion of the testis stress the difficulty of diagnosis and the frequency of errors. This has suggested to us the need to develop a radio-isotope testiculogram corresponding to the radioisotope nephrogram used for renal functional diagnosis. The substance for the timeactivity curve is 99mTc pertechnitate which is taken up by the tubular epithelium of the testis and epididymis. A scan at 20 minutes proved highly diagnostic and produced a small amount of radiation only. Six quantitative parameters described the shape of the curve. These have been determined for the normal and related to age and point of measurement. It is then possible to differentiate partial and total tortion from acute epididymoorchitis. It is no longer necessary to subject every patient with acute testicular disease to surgery. With partial tortion, a conservative operation with fixation of the testis can be recommended instead of semicastration.