PMC3162309_01
Axial non-contrast computed tomography of temporal bone. The external auditory canal is nearly occluded by the anteriorly-based soft tissue mass of heterogeneous signal intensity. There is no evidence of erosion of the anterior bony external auditory canal. Contour irregularity of the mandibular condyle is evident.
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F1
Thin cut computed tomography revealed a soft tissue mass in the EAC with a heterogeneous signal density (Fig. 1).
Histologic features of ganglion cyst. The overlying epithelium of the external auditory canal is visible with a nodular lesion beneath. The solid component has loose, myxoid areas and the adjacent cystic component contains mucinous material. Original magnification=40X.
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F2
The more dense regions had areas of fibrosis, representing areas of organization (Fig. 2).