Inflammatory pseudotumor of the kidney mimicking malignancy on 18F-FDG PET/CT in a patient with diabetes and hepatocellular carcinoma.
Inflammatory pseudotumor (IPT) is a pseudoneoplastic lesion that most commonly involves lung. We report a case of IPT of kidney associated with hepatocellular carcinoma. CT and PET/CT showed the features of renal cell carcinoma. After radical nephrectomy, histologic examination demonstrated acute pyelonephritis associated with papillary necrosis, and IPT involving renal parenchyma and capsule. Although renal IPT is a very rare tumor, awareness of its existence in the differential diagnosis of a renal mass is critical to avoid misdiagnosis. Clinician should carefully consider differential diagnosis and complications associated with acute or chronic pyelonephritis and papillary necrosis in diabetic patients, particularly.
Department of Surgery, College of Medicine, Hanyang University Medical Center, Seoul, Korea.
Jae Hoon
JH
Lee
Kyeong Geun
KG
Lee
Hwon Kyum
HK
Park
Soon Young
SY
Song
Ji Young
JY
Kim
Young Hwan
YH
Kim
Yun Young
YY
Choi
Ki-Seok
KS
Jang
Moon Hyang
MH
Park
D000368:Aged; D006528:Carcinoma, Hepatocellular / Q000150:complications* / Q000000981:diagnostic imaging; D048909:Diabetes Complications / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D005260:Female; D019788:Fluorodeoxyglucose F18; D006104:Granuloma, Plasma Cell / Q000150:complications / Q000000981:diagnostic imaging*; D006801:Humans; D007674:Kidney Diseases / Q000150:complications* / Q000000981:diagnostic imaging; D008113:Liver Neoplasms / Q000150:complications / Q000000981:diagnostic imaging*; D064847:Multimodal Imaging; D049268:Positron-Emission Tomography; D014057:Tomography, X-Ray Computed
D019788:Fluorodeoxyglucose F18