article_snippet: Years before Cecil Clayton murdered a cop, Cecil Clayton had part of Cecil Clayton brain removed, his lawyers say .
article_snippet: A brain scan shared by his lawyers show a significant section of his brain is missing .
article_snippet: Doctors were forced to remove 20 per cent of Cecil Clayton frontal lobe, the area of the brain that controls decision making and emotions, the St Louis Post-Dispatch reported.
article_snippet: A scan shared by the St Louis Post-Dispatch attorney Elizabeth Unger Carlyle shows a large section missing from the St Louis Post-Dispatch .
highlights_snippet: Doctors were forced to remove 20 per cent of Cecil Clayton frontal lobe .
  