The pyloric sphincter prevents the regurgitation of chyme from the duodenum into the stomach. It also controls the flow of chyme into the intestine, which provides the intestines with a manageable volume of chyme from which to absorb nutrients.
Pittsburgh star James Conner diagnosed with cancer. Conner says he has Hodgkin lymphoma, but he vows to play again.
1 This is most likely due to expression of the virus.  HHV-8-negative Multicentric Castleman disease The cause for immune activation that is responsible for the other 50% of MCD cases is unknown. These cases are referred to as idiopathic MCD. Idiopathic MCD can demonstrate hyaline vascular, plasmacytic, or mixed lymph node features.