I have had an anal fissure before and it was visable years ago. I now have the exact same symptoms but my gp couldnt see anything so sent me for a sigmoidoscope to rule out haemorrhoids of which there was none but this dr was also unable to see a fissure, she said it may be in the folds so unable to see.
My gp is currently reluctant to treat the fissure as she cant see it and wants to wait the results of biopsies which take weeks and im already in a lot of pain with bleeding and have been for a while.
So im really asking is it possible to have a fissure that is not visable as im 100% sure thats whats wrong as its the same symptoms as last time and so far every other test has come up negative