MRI of Native Knee Cartilage Delamination Injuries.

Objective: The purpose of this article is to describe the normal imaging appearance of cartilage and the pathophysiologic findings, imaging appearance, and surgical management of cartilage delamination.

Conclusion: Delamination injuries of knee cartilage signify surgical lesions that can lead to significant morbidity without treatment. These injuries may present with clinical symptoms identical to those associated with meniscal injury, and arthroscopic identification can be difficult, thereby creating a role for imaging diagnosis.

Intraabdominal Lymphatic Malformations: Pearls and Pitfalls of Diagnosis and Differential Diagnoses in Pediatric Patients.

Objective: The purpose of this article is to review the practical imaging workup and characteristic imaging appearances of intraabdominal lymphatic malformations (LMs) in the pediatric population with a brief discussion of some common differential diagnoses found in a vascular anomaly clinic.

Conclusion: LMs are uncommon pediatric lesions. Because of their rarity among LMs overall, a tendency to present later in life than superficial LMs, and often incidental identification, intraabdominal LMs pose a particular diagnostic challenge, and pathologic entities that are more prevalent must be carefully excluded first.

Low-Flow Vascular Malformation Pitfalls: From Clinical Examination to Practical Imaging Evaluation--Part 2, Venous Malformation Mimickers.

Objective: The purpose of this article is to review the unusual clinical and radiographic features of venous malformations that can give rise to diagnostic confusion. Entities that can have overlapping clinical and imaging features with venous malformations are also reviewed.

Conclusion: Venous malformations are congenital endothelial malformations secondary to errors in vascular morphogenesis and are usually diagnosed in the first 2 decades of life.

Low-Flow Vascular Malformation Pitfalls: From Clinical Examination to Practical Imaging Evaluation--Part 1, Lymphatic Malformation Mimickers.

Objective: Palpable subcutaneous masses present in various shapes and sizes in the pediatric population and, accordingly, represent a variety of underlying causes. Lymphatic and venous malformations are among the most common pediatric subcutaneous lesions. However, there are congenital and acquired, as well as benign and malignant, soft-tissue masses that can mimic them clinically and at imaging.