Pars Tensa Retractions


In the same way that the pars flaccida is vulnerable to retraction, the pars tensa may also become retracted.  This usually occurs at the posterosuperior section of the pars tensa, where it may involve the long process of the incus, stapes and other middle ear structures.



Retraction of the anteroinferior segment of the pars tensa following the insertion of a ventilation tube.  There is an effusion as well as some retraction of the pars flaccida.