Reninoma Masked by the Use of an Angiotensin Receptor Blocker

Authors

  • Min Jung Kim Department of Internal Medicine, Pusan National University School of Medicine, Yangsan; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, South Korea Author
  • Joo Hui Kim Department of Internal Medicine, Pusan National University School of Medicine, Yangsan; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, South Korea Author
  • Il Young Kim Department of Internal Medicine, Pusan National University School of Medicine, Yangsan; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, South Korea Author
  • Dong Won Lee Department of Internal Medicine, Pusan National University School of Medicine, Yangsan; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, South Korea Author
  • Soo Bong Lee Department of Internal Medicine, Pusan National University School of Medicine, Yangsan; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, South Korea Author

Abstract

Reninoma is a tumor that secretes excessive renin and is a rare cause of secondary hypertension. We report a case of reninoma with delayed diagnosis in a 33-year-old woman taking an angiotensin receptor blocker. During angiotensin receptor blocker medication, she had exhibited no electrolyte abnormality. The angiotensin receptor blocker was stopped for pregnancy planning purposes, and subsequent hypokalemia was observed. Abdominal computed tomography showed an enhanced round mass in the right kidney. Right partial nephrectomy was performed and the renal mass was removed. Histologic findings confirmed a diagnosis of reninoma. The patient's blood pressure and serum potassium remained normal after surgery. Diagnosis of reninoma might be delayed in patients taking angiotensin receptor blockers because they can mask hypokalemia due to reninoma.

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Author Biographies

  • Il Young Kim, Department of Internal Medicine, Pusan National University School of Medicine, Yangsan; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, South Korea
    Division of Nephrology, Department of Internal Medicine
  • Soo Bong Lee, Department of Internal Medicine, Pusan National University School of Medicine, Yangsan; Research Institute for Convergence of Biomedical Science and Technology, Pusan National University Yangsan Hospital, Yangsan, South Korea
    Division of Nephrology, Department of Internal Medicine

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Published

2016-12-01

Issue

Vol. 10 No. 6 (2016): November

Section

CASE REPORT | Kidney Diseases

How to Cite

Reninoma Masked by the Use of an Angiotensin Receptor Blocker. (2016). Iranian Journal of Kidney Diseases, 10(6), 413-415. https://www.ijkd.org/index.php/ijkd/article/view/2693

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