A<unk>  () is a cyst in the<unk> m, and is one of the rarest abdominal tumors, with approximately 822 cases reported since 1507. The incidence is between 1 per 100,000 to 1 per 250,000 hospital admissions. Tillaux's triad named after the French surgeon Paul Jules Tillaux can be seen in cases of<unk> . It consists of the following signs: *a fluctuating swelling near the umbilicus, *freely mobile in the direction perpendicular to the attachment of mesentry, *with a zone of resonance around the swelling. It is basically of two types : 1. Chylolymphatic most common type, thin wall, lined by flat endotheliun, clear chylous fluid present, separate blood vessels 2. Enterogenous-thick wall, lined by columnar, mucinous fluid present common blood supply
Mesenteric cyst
Enteric duplication cyst
Choledochal cysts
Meckel's diverticulum
Pancreatic cyst
Enterocele
Intussusception 
Ectopic pancreas