Isolated renal artery dissection, presentation, evaluation, management, and pathology

Area of Science:

• Vascular Surgery
• Nephrology
• Radiology

Background:

• Isolated nontraumatic renal artery dissection is an uncommon condition.
• It frequently affects young males and is often associated with fibromuscular dysplasia.
• Hypertension is a common comorbidity in patients with renal artery dissection.

Purpose of the Study:

• To present a series of cases of isolated nontraumatic renal artery dissection.
• To analyze the clinical presentation, diagnostic findings, and treatment outcomes.
• To evaluate the efficacy of medical versus surgical management for hypertension control.

Main Methods:

• Review of 35 cases: 24 diagnosed angiographically (group 1) and 11 found at autopsy (group 2).
• Clinical data collection including patient demographics, symptoms, renal function tests, and imaging (angiography, isotope renograms).
• Analysis of treatment strategies (medical antihypertensive therapy vs. surgical intervention) and follow-up blood pressure control.

Main Results:

• Fibromuscular dysplasia was present in 22 cases (radiographically).
• Hypertension was noted in 23/24 patients in group 1, with recent onset in 17.
• Both medical and surgical treatments achieved comparable blood pressure control at follow-up (mean 52 months).

Conclusions:

• Isolated nontraumatic renal artery dissection predominantly affects young men with concurrent fibromuscular dysplasia.
• Management should focus on controlling associated hypertension.
• Medical therapy demonstrated effective blood pressure control in this patient cohort.