Hi and welcome to HCM.
You obviously have symptomatic liver
haemangioma. This is one of the most common liver "tumors". It is immposible to be 100% sure that this is haemangioma considering ultrasound
only,but it is good that some more serious liver malignancies are ruled out.
Haemangiomas cause problems when become large enough so it can press surrounding structures or liver casule. Usually it happens when it measure more than 5cm but even smaller cysts can do it as well.
So consult your surgeon about modalty of treatment and do further tests to exlude other liver lesions.
Wish you good health.