Multimodality imaging of vascular anomalies
1Department of Radiology, Miami Children's Hospital, 3100 SW 62nd Ave., Miami, FL 33155-3009, USA. ricres1@aol.com
Insights
Accurate diagnosis of pediatric vascular malformations and hemangiomas is crucial. This review clarifies terminology and imaging approaches, primarily ultrasound and MRI, to guide correct initial diagnosis and prevent long-term complications.
Area of Science:
- Pediatric Radiology
- Vascular Anomalies
- Diagnostic Imaging
Background:
- Vascular malformations and hemangiomas are common pediatric conditions.
- Lack of uniform terminology complicates diagnosis.
- Correct diagnosis is vital to prevent physical and emotional sequelae for children and families.
Purpose of the Study:
- To clarify terminology and classification of pediatric hemangiomas and vascular malformations.
- To outline the diagnostic imaging approach for these conditions.
- To describe the clinical and histological features and imaging appearance.
Main Methods:
- Review of current literature on pediatric vascular anomalies.
- Emphasis on clinical diagnosis based on physical examination.
- Discussion of imaging modalities: ultrasound (US), magnetic resonance imaging (MRI), and conventional arteriography.
Main Results:
- Ultrasound (US) is the primary imaging modality due to availability, cost-effectiveness, and safety.
- Magnetic resonance imaging (MRI) aids in further lesion characterization.
- Conventional arteriography is reserved for therapeutic interventions, particularly for arteriovenous malformations.
Conclusions:
- A standardized terminology is needed for accurate diagnosis of vascular malformations and hemangiomas.
- A systematic imaging approach using US and MRI is essential for diagnosis and management.
- Early and correct diagnosis prevents adverse outcomes in affected children and their families.
Abstract:
Vascular malformations and hemangiomas are common in children but remain a source of confusion during diagnosis, in part because of the lack of a uniform terminology. With the existing treatments for hemangiomas and vascular malformations, it is important to make the correct diagnosis initially to prevent adverse physical and emotional sequelae in not only the child but also the family. The diagnosis of vascular malformations is made primarily by the clinician and based on the physical exam. Imaging is carried out using predominantly ultrasound (US) and magnetic resonance imaging (MRI), which are complementary modalities. In most cases of vascular anomalies, US is the first line of imaging as it is readily available, less expensive, lacks ionizing radiation and does not require sedation. MRI is also of great help for further characterizing the lesions. Conventional arteriography is reserved for cases that require therapeutic intervention, more commonly for arteriovenous malformations. Radiographs usually play no role in diagnosing vascular anomalies in children. In this article, the author describes the terminology and types of hemangiomas and vascular malformations and their clinical, histological features, as well as the imaging approach and appearance.
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