ectopic kidney;
false-positive results;
gastrointestinal bleeding;
Tc-99m red blood cells;
D O I:
10.1097/00003072-200008000-00024
中图分类号:
R8 [特种医学];
R445 [影像诊断学];
学科分类号:
1002 ;
100207 ;
1009 ;
摘要:
A 64-year-old woman with a history of repeated bleeding episodes in the previous 4 years had several days of lower gastrointestinal bleeding and a low hematocrit concentration. Despite intensive searching (colonoscopy, arteriography, and upper gastrointestinal tract endoscopy), the site of the bleeding was not identified, and Tc-99m-labeled RBC scintigraphy was performed. Immediately after injection of the radiopharmaceutical, significant activity was visualized in the upper abdomen. Subsequent Tc-99m MAG3 renal scintigraphy showed that the activity was secondary to an ectopic right kidney, which was confirmed by ultrasound.