We Were Waiting For Test Results Of My Father But

We were waiting for test results of my father but all the symtoms leaded to cancer but he died before anny results... ther was a litle blood that come out of his mouth when he past, he had like red dots on his chest thats the wayvhe looked when they took him away. When we went to look at his body a day before the funeral his head was swolen en and purple black the pillow that we send with him that they gave back was full of blood dripping out, its looked like he was beaten up. What causes this?