My Father Taking Treatment For Tounge From Mumbai. My Father

My father taking treatment for tounge from mumbai. My father case is on 1st jan 2016 we got his biopsy test report for tounge. Report was positive so he operated his tounge by dr. Sultan pradhan for dat area. Operation n treatment was all okay but we dont why dere was cut on other side of tounge was seeing from past 8 months now this time father went for regular treatment, he again point outed that cut which was not filled up. Doc checked it n he said for as soon as possible operate dat cut. N it was operated. This is about 15 days he saw blood in the morning of diwali's day n that blood stopped immediately den nthing was happened on dat whole day today he saw blood in his saliva . I want to know is this fine if blood cum from taanke?