<sod >The 62-year-old presenter (pictured with his wife Frances) was previously diagnosed with bowel cancer in 2014 and it was later revealed that it had spread to his liver and lymph nodes BBC newsreader George Alagiah is to undergo medical treatment for cancer after the disease returned for a second time.< eod>< sod > The 62-year-old presenter (pictured with his wife Frances) was previously diagnosed with bowel cancer in 2014 and it was later revealed that it had spread to his liver and lymph nodes BBC newsreader George Alagiah has revealed his bowel cancer has returned for a second time as he's flooded with messages of support from colleagues and viewers.< eod>