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Clinical Problem Solving: Radiology
November 2005

Radiology Quiz Case 4: Diagnosis

Author Affiliations


Arch Otolaryngol Head Neck Surg. 2005;131(11):1030. doi:10.1001/archotol.131.11.1030

The most widely used classification system for vascular lesions was proposed by Mulliken and Glowacki1 in 1982. It divides such lesions into 2 broad categories: hemangiomas (vascular tumors) and vascular malformations. Hemangiomas usually are not present at birth. They characteristically undergo proliferation followed by involution, and during the proliferative phase they histologically demonstrate endothelial hyperplasia and increased mitotic activity. Vascular malformations, on the other hand, are always present at birth, although they may not be clinically apparent. They do not undergo proliferation or involution, and histologically they consistently demonstrate normal mitotic activity.

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