Angioscintiphotography with 99mTc in 310 Cases of Space-Occupying Kidney Lesions

Summary Angioscintiphotography with 99mTc has been performed in 310 cases of spaceoccupying kidney lesions with the purpose of establishing the diagnostic value of the kidney perfusion. In the presence of a neoplasm, a more or less marked blood flow in the lesion generally appears as a hot area. This pattern is not observed in poorly vascularized carcinomas or in Wilms’ tumors. The percentage of poorly vascularized tumors is moderate and does not affect the value of the method. Cystic lesions appear usually to be cold. Large cysts exhibit no uptake; on the contrary, the degree of vascularization in the small cys…