EducationEventsMonongahela Valley Hospital Mon Valley Hospital: Oncology Symposium By The Western PA Healthcare News Team - May 3, 2012 74 Share FacebookTwitterPinterestLinkedinReddItEmail Monongahela Valley Hospital is sponsoring an Oncology Symposium on Wednesday, May 23 from 8:00 a.m. to 2:15 p.m. See the ad below for further details.