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Updated: Oct 2, 2026

A Novel Method: Super-selective Adrenal Venous Sampling
Published on: September 15, 2017
[Secondary forms of hypertension. 5. Hypertension caused by Cushing syndrome and Conn's disease]
1Ltd. Arzt Innere Abt., Bezirkskrankenhaus Haar, Ringstr. 33a, D-85540 Haar. HFuessl@compuserve.com
Insights
Conn syndrome (primary aldosteronism) and Cushing syndrome are key diagnoses for hypertension. Early magnetic resonance angiography aids Conn syndrome diagnosis, while clinical signs guide Cushing syndrome investigation, simplifying secondary hypertension management.
Area of Science:
- Endocrinology
- Cardiology
- Medical Diagnostics
Background:
- Hypertension investigation often involves differentiating between Conn syndrome (primary aldosteronism) and Cushing syndrome.
- Primary aldosteronism affects less than 0.5% of hypertensive patients.
- Cushing syndrome, a cause of hypertension in approximately 70% of patients, presents with characteristic cutaneous changes.
Purpose of the Study:
- To outline diagnostic and management strategies for Conn syndrome and Cushing syndrome in hypertensive patients.
- To emphasize the utility of magnetic resonance angiography in the early work-up of primary aldosteronism.
- To highlight clinical indicators for suspecting Cushing syndrome.
Main Methods:
- Initial diagnostic work-up for hypertension includes laboratory investigations.
- Magnetic resonance angiography is recommended early for adrenal representation in suspected primary aldosteronism.
- Clinical and biochemical confirmation precedes imaging for Cushing syndrome.
Main Results:
- Magnetic resonance angiography provides excellent adrenal visualization, potentially reducing the need for extensive diagnostic tests.
- Minimally invasive surgery and new pharmacotherapies have improved treatment outcomes for secondary hypertension caused by Conn syndrome.
- Typical cutaneous changes are reliable indicators for clinical suspicion of Cushing syndrome.
Conclusions:
- Early integration of magnetic resonance angiography can streamline the diagnosis of primary aldosteronism.
- Recognizing clinical signs is crucial for timely diagnosis of Cushing syndrome.
- Advances in surgical techniques and drug development have simplified the management of these secondary forms of hypertension.
Abstract:
The Conn syndrome and the Cushing syndrome are major differential diagnoses in the investigation of hypertension. Primary aldosteronism (Conn syndrome) is found in < 0.5% of hypertensives. In addition to the usual laboratory investigations, magnetic resonance angiography should be performed at the start of the diagnostic work-up, since it enables a very good representation of the adrenals, and saves many diagnostic tests. Minimally invasive microsurgical techniques and the development of new drugs have greatly simplified the treatment of this form of secondary hypertension. In the case of the Cushing syndrome, which leads to hypertension in about 70% of the patients, the general practitioner should look for the typical cutaneous changes that inevitably accompany this syndrome. Only when the Cushing syndrome has been confirmed clinically and biochemically, should an imaging procedure be performed.
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