Renin-producing renal cell carcinomas?clinical and experimental investigations on a special form of renal hypertension
✍ Scribed by Steffens, J. ;Bock, R. ;Braedel, H. U. ;Isenberg, E. ;B�hrle, C. P. ;Ziegler, M.
- Publisher
- Springer
- Year
- 1992
- Tongue
- English
- Weight
- 559 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0300-5623
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✦ Synopsis
The pathogenetic relationship between tumour and hypertension was investigated in 129 patients with renal cell carcinoma, of whom 41 (31.8%) were hypertensive. Of these 41 patients with renal tumours and hypertension, 6 (14.6%) were found to have primary reninism. In these patients the plasma renin activity in blood from the renal veins showed a tumour kidney to contralateral kidney ratio of between 4 and 7, and 2 patients also had secondary hyperaldosteronism. In the same 6 cases the renin content in the renal tumour tissue was significantly higher than that in tissue from the adjacent tumour-free renal cortex of the ipsilateral kidney. Immunohistochemical demonstration of renin in the tumour was only possible in these 6 cases. In 5 of these patients blood pressure returned to normal following nephrectomy; in the 6th case there was a drop in blood pressure after nephrectomy. In 3 renin-positive tumours examined, autonomous renin production was demonstrated in cell culture. Renin-producing renal cell carcinomas are an uncommon cause of renal hypertension. The differential diagnosis of hypertension should therefore also include renal tumour.