Which type of hemangioma is characterized by larger dilated spaces and involvement of larger vessels and usually does not regress?

• A. Capillary hemangioma
• B. Cavernous hemangioma
• C. Lymphangioma
• D. Progenic Granuloma

Answer: (B)

The lesion described is cavernous hemangioma. Its hallmark is large, dilated vascular spaces lined by endothelium and often involving deeper, larger vessels. This architecture tends to produce a lesion that is more extensive and persistent, with little spontaneous regression compared with other hemangiomas. In contrast, capillary hemangiomas consist of many small capillary-sized vessels and are the classic infantile lesions that commonly involute over time. Lymphangiomas are made of lymphatic channels, not blood-filled vessels, and have a different clinical/histologic behavior. Pyogenic (progenic) granuloma is a lobular capillary proliferation that’s typically small and prone to bleeding, not a large, deep, non-regressing vascular lesion.