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Updated: Jun 13, 2026

Catheter-based Endovascular Angioplasty for Fibrosing Mediastinitis-associated Pulmonary Vein Stenosis
Published on: August 26, 2025
[Isolated pulmonary arteriovenous malformation (PAVM)--report of three cases]
Arpád Füredi1, László István Kecskés
1Vas Megyei Markusovszky Lajos Altalános, Rehabilitációs és Gyógyfürdo Kórház, Egyetemi Oktatókórház Mellkassebészeti Osztály 9700 Szombathely Markusovszky u. 3. a.furedi@upcmail.hu
Abstract:
Isolated PAVM is rare condition and only a few cases of VATS (Video-Assisted Thoracoscopic Surgery) resection have been reported so far. Since the clinical course of PAVM is not entirely benign due to its possible progression and serious complications (paradoxical emboli, stroke, brain abscess, etc.), the most radical least invasive treatment should be chosen in all cases nowadays. Embolization may be incomplete and carries a risk of accidental systemic embolization, therefore surgical excision is the preferred method of choice. In cases of surgical resections, pulmonary parenchyma sparing techniques such as wedge resection and local excision by VATS is desirable, if possible. We present three patients who were admitted with asymptomatic pulmonary round shadow (umbra rotunda) for further investigation and treatment. We have performed two wedge resections by VATS and one segmentectomy via axillary thoracotomy. We wish to emphasize the importance of this disease to consider in differential diagnosis to avoid complications.
Insights
Pulmonary arteriovenous malformations (PAVMs) require surgical excision for best outcomes. Minimally invasive Video-Assisted Thoracoscopic Surgery (VATS) techniques like wedge resection offer parenchyma-sparing options for these rare conditions.
Area of Science:
- Cardiothoracic Surgery
- Vascular Surgery
- Diagnostic Imaging
Background:
- Pulmonary arteriovenous malformations (PAVMs) are rare vascular anomalies of the lung.
- While often asymptomatic, PAVMs carry risks of serious complications including stroke and brain abscess.
- Surgical intervention is preferred over embolization due to potential incompleteness and systemic embolization risks.
Observation:
- This study presents three cases of asymptomatic PAVMs initially detected as pulmonary round shadows.
- The patients underwent surgical treatment for their PAVMs.
- Diagnostic imaging played a crucial role in identifying the PAVMs.
Findings:
- Two patients were treated with Video-Assisted Thoracoscopic Surgery (VATS) wedge resections.
- One patient underwent a segmentectomy via axillary thoracotomy.
- Surgical excision, particularly parenchyma-sparing VATS techniques, is effective for PAVMs.
Implications:
- PAVMs should be considered in the differential diagnosis of asymptomatic pulmonary nodules.
- Minimally invasive surgical approaches like VATS are feasible and desirable for PAVM resection.
- Timely diagnosis and treatment of PAVMs can prevent severe neurological and embolic complications.
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