I have a leaking shower drain pipe. I know where the leak is and I am trying to find a solution to fixing it besides taking out the concrete as I have just finished installing a stand alone shower with tile all over and my floor is tiled and I don't want to have to replace all of it. Any help. Thanks. Kent.

I have a leaking shower drain pipe. I know where the leak is and I am trying to find a solution to fixing it besides taking out the concrete as I have just finished installing a stand alone shower with tile all over and my floor is tiled and i don't want to have to replace all of it. Any help. Thanks. Kent.
If the shower's on a outside wall simply tunnel under the slab to the drain. Regards, Tom