Purpose or Case Report:
Accurate diagnosis of venous malformations can be challenging, and confidently diagnosing them is important for accurate treatment. A thorough understanding of the etiology, imaging appearance, and important mimickers of venous malformations is critical for the radiologist to provide an accurate assessment for the clinician.
Methods & Materials: Using multiple case examples from our teaching file over the past 15 years, this exhibit will allow viewers to:

1. Review relevant developmental etiologies for venous malformations.
2. Learn optimal MR imaging technique for assessment of venous malformations, including use of blood-pool contrast agents and whole body MRI.
3. Understand most common imaging characteristics of venous malformations.
4. Discuss important mimics and imaging pitfalls in diagnosing venous malformations.
5. Learn the “must describe” features when reporting venous malformations.
6.Test the reader’s knowledge with a brief quiz.
Results: This educational review will present the wide range of image features of venous malformations. The frequency of these features encountered in our patient population will emphasize the most useful imaging findings for appropriate diagnosis. The performance and utility of routine MRI, and advanced MRI such as blood-pool contrast agents and whole body imaging will be discussed. Case examples will be provided in addition to self-assessment questions.
Conclusions: Venous malformations are commonly encountered in pediatric imaging. This educational exhibit provides a review of MRI protocols and characteristic imaging patterns from our clinical database over the past 15 years. An in depth knowledge of the characteristic MRI findings, in addition to the MRI techniques available and their utility, will assist in concise diagnosis. If key MRI findings are present, the radiologist can confidently diagnose venous malformations. Furthermore, the radiologist's expertise can aid the clinical team involved in the patient's care.