If a pregnant woman has cancer?

It depends on the type of cancer and a variety of other factors. This isn't a question that can be answered without more details.

This happened to my mom.

She was very, very sick through most of her pregnancy, my brother was born quite early, but both survived and are fine.

The outcome would have the potential to be different in everyone depending on what stage the cancer was at, how fast it was spreading/growing, how the mother's body was handling it, etc. The cancer could potentially (or probably, rather) impede growth just from the draining effect it has on the mother. It could also induce a miscarriage from stress on the mothers body/mind. Any medications taken during the pregnancy would have potential to harm the baby. Cancer itself wouldn't cause birth defects or cause the baby to have cancer but the effects of the cancer or any meds may cause harm. Since they'd most likely do a c-section in this case, that increases the riskiness of the birth also for both mom and baby.

In short, all of your answers could happen.

This exact thing happened to my friend last month. She has cervical cancer and she is 2 months pregnant. They had to abort the baby so she could start on chemo and radiation. So so sad...

That's a lot of variables you have. What kind of cancer? How aggressive? How healthy is the mother? The baby? You should probably ask someone other than an internet forum.

How the hell did this get on IIN? There's no way anyone can answer this question properly! >_<

My mom once told me that a relative had some kind of cancer while pregnant. She was told to abort the baby so she could have treament, but instead the woman decided to wait until the baby was born. I'm pretty sure that they both died.

I'm not a doctor, but I would guess that the chances of survival are pretty slim for both mother and child. Though I guess it depends on a lot of different factors.

I am not a doctor. There are different types and stages of uterus cancer.

...uhm... you should probably ask a doctor.

My own mother was in a similar situation, though not identical. She contracted cervical cancer about the time she met my father. By the time they caught it had already begun to spread.

In my entire life she maybe spoke of it once or twice so I'm not aware of all the details but she decided to go through with the pregnancy (obviously) and here I am.

It's a risk but there is no great victory without great risk. None of us are doctors, however.

Asking us for counsel on this is like asking a fisherman how to fly an airplane.

nothing is certain

Isn't this the plot to Steel Magnolias?

I think that's a question for a doctor.

I would imagine it would be down to individual cases.

If this question stems from a personal situation, then I am truely sorry for what you/your loved ones are going through.