We are told in the fourth season that Michael and Lincoln's mother died of a brain aneurysm but in the first season when asked about his family medical history, Lincoln tells Sarah that his mother had liver cancer. Never said that she died of cancer, only that it was part of her mother's medical history.
At 14:13, an outside shot of an apartment building is shown. But the shot is flipped horizontally, as shown by the street sign (2300 block of Beverly Glen Blvd, Los Angles, Ca) which is backwards, and the stop sign which is on the wrong side of the street.