[Postoperative pelvic lymphocele: demonstration by lymphoscintigraphy].

Eleven patients who had 19 postoperative lymphocele were examined by lymphoscintigraphy using 99mTc human serum albumin (99mTc-HSA). Fourteen postoperative lymphocele were demonstrated, and 5 lymphocele were not. All lesions of 2 cm or greater in short diameter on computed tomography were detected by lymphoscintigraphy, and detectability was not achieved for lesions less than 2 cm in short diameter. The lymphocele can be divided into two groups according to the site of occurrence, the external and internal groups. But we have not detected any characteristic pattern to differentiate the two groups. And delayed scan was more useful in the detection of postoperative lymphocele than early scan.