Based on the context and the answer, generate a question. 

Context: I can tell the hematoma is different . It 's a different shape and it 's right there , big and ugly next to the babies sac . The ultra sound tech says that can happen and may not mean something horrible .

Answer:

Because they have worked with a lot of pregnant women and know what danger looks like .



Why is n't the ultrasound tech more concerned about the hematoma ?