 Consideration have been given to performing a stapedectomy with a tissue seal and then returning later for prosthesis insertion; however, upon inspection of the round window area, there was found to be no definable round window niche, no round window membrane. 
Consideration have been given to performing a stapedectomy with a tissue seal and then returning later for prosthesis insertion ; however , upon inspection of the round window area , there was found to be no definable round window niche , no round window membrane .