Sub-2 mm Radial Arterial Access for Endovascular Embolization of an Idiopathic Intramammary Pseudoaneurysm: A Case Report

Sounak Paul ¹, Srijit Saha ¹, Sourav Tripathy ¹

⁰Interventional Radiology, CK Birla Hospitals, Calcutta Medical Research Institute, Kolkata, IND.

Cureus +

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November 3, 2025

View abstract on PubMed

Summary

This study demonstrates successful endovascular treatment of a rare spontaneous intramammary pseudoaneurysm using a small radial artery access. This technique is safe for patients with narrow radial arteries, common in the Indian subcontinent.

Area Of Science

Vascular Surgery
Interventional Cardiology
Radiology

Background

Radial artery access is infrequently used, especially in the Indian subcontinent where radial artery diameters are typically less than 2 mm.
Spontaneous intramammary pseudoaneurysms (Im-PSAs) are rare, though they can occur after breast biopsies.

Purpose Of The Study

To present a case of endovascular treatment for a spontaneous Im-PSA.
To highlight the feasibility and safety of using a sub-2 mm radial artery for access in such cases.

Main Methods

Endovascular treatment of a left internal mammary artery pseudoaneurysm via a left radial artery approach with diameters under 2 mm.
Intraprocedural administration of nitroglycerin (NTG) via the sheath and before sheath-catheter flushes to prevent spasm.
Detailed outlining of pre- and intraprocedural steps for radial access in patients with narrow arteries.

Main Results

Successful endovascular treatment of the Im-PSA was achieved.
No intraprocedural radial artery spasm or postprocedural thrombosis occurred.
The procedure demonstrated the safety and efficacy of using sub-2 mm radial arteries for access.

Conclusions

Radial access through sub-2 mm radial arteries can be safely and effectively utilized for treating subclavian or visceral arterial pathologies.
This approach offers a viable option for patients with narrow radial arteries, particularly in regions like the Indian subcontinent.

Keywords:

barbeau c embolization interventional radiology intramammary pseudoaneurysm radial access