| pubmed-article:19408502 | pubmed:abstractText | This study aims to describe anatomical variations in the posterior tympanum. Different configurations which influence surgical decisions in middle ear surgery are described. Surgical access to the sinus tympani remains a challenge for otologic surgeons. Usually, the retrotympanum is approached through the middle ear in the anterior-posterior direction during chronic ear surgery. An endoscopic approach is necessary to detail all reliefs of the middle ear and control the total removal in a cholesteatoma surgery. | lld:pubmed |
