FDG PET in solitary metastastic/secondary tumor of the kidney: a report of three cases and a review of the relevant literature.
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.
Department of Radiology, Graduate School of Medicine, Tohoku University, Sendai, Japan. kaneta@rad.med.tohoku.ac.jp
Tomohiro
T
Kaneta
Takashi
T
Hakamatsuka
Takayuki
T
Yamada
Kei
K
Takase
Akihiro
A
Sato
Shuichi
S
Higano
Shigeo
S
Kinomura
Hiroshi
H
Fukuda
Shoki
S
Takahashi
Shogo
S
Yamada
D000293:Adolescent; D000328:Adult; D000368:Aged; D019788:Fluorodeoxyglucose F18; D006801:Humans; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging* / Q000556:secondary*; D008207:Lymphatic Metastasis; D008223:Lymphoma / Q000000981:diagnostic imaging*; D008297:Male; D049268:Positron-Emission Tomography / Q000379:methods; D017410:Practice Guidelines as Topic; D010818:Practice Patterns, Physicians'; D011859:Radiography; D019275:Radiopharmaceuticals
D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18