An Oxford man whose wife died after giving birth at Danbury Hospital in 2020 has filed a lawsuit against the medical professionals that treated her in the final weeks of her pregnancy. He alleges that a chest X-ray she was referred for — and didn’t receive — five weeks prior would have revealed an undiagnosed 15 centimeter tumor that led to her death.

Lisa Sullivan delivered her baby via C-section on June 10, 2020, and began going downhill soon after, suffering cardiac arrest and brain damage from a lack of oxygen, according to the lawsuit. She died June 15, 2020, after which the tumor — a 15.5 centimeter large B-cell lymphoma — was found, the lawsuit states.