Reninoma: a rare cause of arterial hypertension
Keywords:
Reninoma, juxtaglomerular cell tumour, hypertensionAbstract
Juxtaglomerular cell tumours, also called reninomas, are benign and rare causes of secondary
high blood pressure.
The authors present a case of a 19-year-old
woman, admitted to the Coimbra University
Hospitals Department of Medicine, suffering
from high blood pressure of recent onset.
Laboratory fi ndings revealed a decrease in
serum potassium and an increased plasma
renin and plasma aldosterone level. The abdominal magnetic resonance scan revealed a mass
in the right kidney, in its middle portion. The
right renal artery angiography confi rmed the
topographic localization, as well as the poor vascularization of the mass.
In the presence of these fi ndings, the patient
was proposed for surgery, which was successfully performed without any complications (a
parenquimal-sparing excision of the tumour was performed).
The histological study of the tissue excised revealed a reninoma.
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