# Primary Hyperaldosteronism in a Normotensive Patient: A Case Report

## TL;DR

A normotensive woman with low potassium and high aldosterone was diagnosed with an adrenal tumor, showing that primary hyperaldosteronism can occur without high blood pressure.

## Contribution

Highlights the importance of considering primary hyperaldosteronism in normotensive patients with severe hypokalemia.

## Key findings

- A normotensive patient presented with hypokalemia, high aldosterone, and suppressed renin.
- CT scan revealed an adrenal mass, confirmed as an adrenal adenoma after surgery.
- The case suggests PA can manifest without hypertension.

## Abstract

Primary aldosteronism (PA) is a clinical syndrome characterized by hypertension, suppressed plasma renin activity (PRA), elevated plasma aldosterone concentration (PAC), and spontaneous hypokalemia.

We present a 37-year-old normotensive female with hypokalemia, high plasma aldosterone level, and suppressed renin. The patient was treated with eplerenone and potassium chloride supplement. Further investigation with a computed tomography (CT) scan revealed a mass in the left adrenal. Laparoscopic adrenalectomy led to the diagnosis of adrenal adenoma.

Primary aldosteronism should be among the differential diagnoses in normotensive patients presenting with severe hypokalemia.