A Symmetric Length-Aware Enrichment Test.

Young et al., (2010) showed that due to gene length bias the popular Fisher Exact Test should not be used to study the association between a group of differentially expressed (DE) genes and a specific Gene Ontology (GO) category. Instead they suggest a test where one conditions on the genes in the GO category and draws the pseudo DE expressed genes according to a length-dependent distribution.

[Gastrointestinal stromal tumor in the cecum--a rare cause of ileo-cecal-colic invagination].

The gastrointestinal stromal tumors (GIST) are the rares mesenchymal tumors of the gastrointestinal tract (1-3% of all gastrointestinal neoplasias). The frequency of their location on the rectocolic site is quoted with the values lower than 10% of all GIST. The authors present a patient case 55 years aged, who presented a gastrointestinal stromal tumor cecal located.

["The fate" of a peri-cystic-jejunostomy in the treatment of the hydatid liver cysts].

The persistence of a hepato-jejunal fistula after 9 years from a peri-cystic-jejunostomy in the treatment of hydatid liver cysts is an amazing condition. We discover this kind of fistula during the operation for cholelithiasis. This association between fistula and a "after-hydatid" choledocholithiasis is an opportunity to discuss some pathogenic and evolutive mechanisms about both of two entities.

[The main utility of trans-anastomosis external drainage in the hydatid liver cysts treatment by peri-cystic-jejunostomy].

We purpose to make a metanalysis of a external drainage and his role in the treatment of the hydatid liver cysts when it was made a anastomosis between peri-cystic cavity and a isolated loop of jejunum. The paper watch 74 cases which were operated in "I. Juvara" surgical clinic and in which it was used the external drainage of peri-cystic cavity.