Can desmoid tumors be fatal?

Can desmoid tumors be fatal?

Desmoid tumors are considered benign (noncancerous) because they don’t spread to other areas of your body. However, sometimes desmoid tumors grow aggressively, affecting nearby structures. In very rare instances, they can be fatal. Desmoid tumors of the head, neck and abdomen are most likely to cause life-threatening problems.