|This article is based off the alternate universe episode!
As such, details on the page may conflict with information from the regular storyline.
Theresa gave birth via emergency c-section after progress stalled in her delivery.
While Theresa was in labor, progress in her labor stopped and she was in extreme pain. Addison ordered a 3-D ultrasound, which revealed that Theresa's baby had a large tumor on her neck, obstructing her airway.
Derek and Addison took Theresa's baby into surgery and removed the tumor, which relieved the pressure and allowed her to breathe.
Theresa has a daughter who was born via emergency c-section when a tumor on her neck stalled the labor. Her daughter was immediately taken into surgery after birth.