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Positive Captopril Renography Without Renal Artery Stenosis but a Renal Cell Carcinoma
Ping-Ju Hsieh1, Yen-Shu Kuo, Meng-Lin Chen
1From the *Department of Nuclear Medicine, Cathay General Hospital, Taipei; †School of Medicine, Fu Jen Catholic University, New Taipei City; ‡Department of Radiology, Cathay General Hospital; §Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University; and ∥Division of Endocrinology and Metabolism, Department of Internal Medicine, Cathay General Hospital, Taipei, Taiwan.
Abstract:
A positive captopril renography indicates that patient's hypertension is renin dependent, most commonly caused by renal artery stenosis. The authors reported a case of positive captopril renography; however, CT demonstrated that renal arteries were intact, but there was a huge chromophobe renal cell carcinoma. Renin-dependent hypertension was relieved soon after nephrectomy. It is an uncommon cause of positive captopril renography.
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