the authors comment about the physiopathology , emphasizing as principal cause the alteration in the development of the petroscamous fissure , that makes the air going from them to the eustachian tubes reaching the median ear and the mastoid cells which will suffer a constant pressure resulting in this way a progressive increase of the pressure followed by rupture and propagation of the air to the subaponeurotic space .
C0015183
eustachian tubes
C0013455
median ear