A Littre’s Hernia is a rare type of hernia that contains a Meckel’s diverticulum.
A Meckel’s diverticulum is a congenital outpouching of the small intestine, usually found in the ileum.
When this diverticulum herniates through an opening in the abdominal wall, it is specifically termed Littre’s Hernia.
It is important to distinguish this from other hernias which usually contain loops of intestine or omentum but not a diverticulum.
Therefore, the correct answer is A Meckel’s diverticulum.