Kaneta Tomohiro, Hakamatsuka Takashi, Yamada Takayuki, Takase Kei, Sato Akihiro, Higano Shuichi, Kinomura Shigeo, Fukuda Hiroshi, Takahashi Shoki, Yamada Shogo
Department of Radiology, Graduate School of Medicine, Tohoku University, Sendai, Japan.
Ann Nucl Med. 2006 Jan;20(1):79-82. doi: 10.1007/BF02985596.
Metastatic tumors or secondary lymphoma of the kidney are rare and can often be missed on conventional computed tomography (CT) imaging. On the other hand, many types of metastatic tumor or lymphoma can be detected clearly as hotspots of elevated uptake on FDG PET. However, excreted FDG present in the urinary tract mimics these findings and interferes with image reading. Careful investigation of the renal cortex by FDG PET and review of anatomical images, such as the findings of CT and MRI, have important roles in the detection of renal tumor. Here, we present three cases of solitary metastatic/secondary tumor of the kidney, and discuss the features of the lesions on FDG PET in comparison with their appearance on CT.
