PMC4413512_01
Opacification and large mastoid cavity as seen in the patient's X-ray mastoid.
CRIOT2015-305494.001.jpg
PMC4413512_01_CRIOT2015-305494.001.jpg
fig1
Largely pearly white mass expanding the mastoid cavity.
CRIOT2015-305494.002.jpg
PMC4413512_01_CRIOT2015-305494.002.jpg
fig2
A large pearly white sac with whitish flakes had been seen completely filling the mastoid cavity and widening the mastoid antrum and also encroaching on the facial ridge and reaching posteriorly to the sigmoid sinus and posterosuperiorly to the sinodural angle (Figure 2).
(a) shows the sac after delivery from the mastoid cavity before its removal. (b) shows the sac.
CRIOT2015-305494.003.jpg
PMC4413512_01_CRIOT2015-305494.003.jpg
fig3