Since Endopeel Techniques exist ( now around 18 years) and in the whole world, none case of hematoma has been reported.
There is among physicians, who are not surgeons, a big confusion between hematoma and ecchymosis.
A hematoma is a surgical emergency and need the evacuation of the blood in a dead space and to find the vessel which is bleeding to stop the haemorrhage.
So nothing to do with ecchymosis !