A lesion composed of microscopic vessels is called as:
The term hemangioma traditionally has been used to describe a variety of developmental vascular anomalies. Currently, hemangiomas are considered to be benign tumors of infancy that display a rapid growth phase with endothelial cell proliferation, followed by gradual involution.
 
Ref: Nevilles oral and maxillofacial pathology 4th edition page 504
Haemangioma
Angioma
Both of them
None of the above