There are many medical reasons that can cause black stools that are tarry with a foul smell, but sometimes dark stools are caused by eating certain foods or taking iron supplements. However, black stools can also be a result of bleeding, and the darker color indicates that the blood could be coming from a point in the upper gastrointestinal tract.
Gertrude Levandowski survived a 96-hour procedure at a Chicago hospital to remove a giant ovarian cyst; the longest surgery. The second longest surgery ever was 40 hours long and that was to remove 6 limbs from a 8 limed baby in India. But the most common longest surgery is spinal cord surgery it is a 14 hour surgery.
1 He registered this record against the San Antonio Spurs on January 19, 1977 but Spurs still won the game, 115-107.  On January 3, 2007, LeBron James made the third longest shot, in the second half of the game against the Boston Celtics. The shot was measured at 83 feet, beating the previously set record of 81 feet by Herb Williams.