RT Book, Section A1 Edmonds, Jr., Joseph L. A2 Lalwani, Anil K. SR Print(0) ID 1169073504 T1 Hemangiomas and Vascular Malformations T2 Current Diagnosis & Treatment Otolaryngology—Head and Neck Surgery, 4e YR 2020 FD 2020 PB McGraw-Hill Education PP New York, NY SN 9780071847643 LK accessmedicine.mhmedical.com/content.aspx?aid=1169073504 RD 2024/04/24 AB Hemangiomas are true tumors with pathologic endothelial cell proliferation; vascular malformations are distinguished by this distinct absence.