From: Childhood Vascular Tumors Treatment (PDQ®)
PDQ Cancer Information Summaries [Internet].
Bethesda (MD): National Cancer Institute (US); 2002-.
NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.
Table 1. 2020 World Health Organization Classification of Vascular Tumorsa
| Category | Vascular Tumor Type |
|---|---|
| Benign | Hemangioma NOS |
| Intramuscular hemangioma | |
| Arteriovenous hemangioma | |
| Venous hemangioma | |
| Epithelioid hemangioma | |
| Lymphangioma NOS | |
| Cystic lymphangioma | |
| Acquired tufted hemangioma | |
| Intermediate (locally aggressive) | Kaposiform hemangioendothelioma |
| Intermediate (rarely metastasizing) | Retiform hemangioendothelioma |
| Papillary intralymphatic angioendothelioma | |
| Composite hemangioendothelioma | |
| Kaposi sarcoma | |
| Pseudomyogenic (epithelioid sarcoma–like) hemangioendothelioma | |
| Malignant | Epithelioid hemangioendothelioma NOS |
| Angiosarcoma |
NOS = not otherwise specified.
aAdapted from the WHO Classification of Tumours Editorial Board.[3]