I read your question and I understand your concern. Whether the hematoma has left any added residual damage though depends on factors like its size and compression effect and on how early it was detected and evacuated. The smaller the size and the sooner it was intervened the better the chances of no aftermath. Also it depends on whether there is still bleeding, you mention he is alcoholic and if he has severe renal impairment from alcohol coagulation is affected as well. Generally speaking the chances are good though, I can t speak about his brain tumor, but he has good chances not to have had consequences from the hemorrhage. I hope to have been of help.