(Portland, OR)  --  Authorities are looking for a driver who struck a pedestrian in Southeast Portland yesterday.  Police say a woman in her 20s was hit near Southeast 80th Avenue and Pine Street at about 3 p.m., and the driver left the scene of the crash.  The woman suffered life-threatening injuries and was rushed to a Portland hospital.  So far, authorities have no information on a possible suspect.  Anyone with information about the hit-and-run is asked to call Portland Police.