PMC6311760_01
Otoscopic view of the right ear in Case 1 (a), and the left ear in Case 2 (b). Masses were discovered at the medial portion of the anterior wall of the bony EAC just in front of the short process of the malleus. Arrows indicate the masses.
CRIOT2018-6346453.001.jpg
PMC6311760_01_CRIOT2018-6346453.001.jpg
fig1
They each presented with a mass, discovered incidentally on routine examination, at the medial portion of the anterior wall of the bony EAC just in front of the short process of the malleus (Figures 1(a) and 1(b)).
CT images of the temporal bone in Case 1 (a) and Case 2 (b). CT imaging shows a lesion emanating from the anterior bony EAC in both cases. In each case, the EAC appears flat with well-defined boundaries. Arrows indicate the masses.
CRIOT2018-6346453.002.jpg
PMC6311760_01_CRIOT2018-6346453.002.jpg
fig2
A CT scan of the temporal bone revealed a lesion emanating from the anterior bony EAC in both cases (Figures 2(a) and 2(b)).
Gross and pathologic examination of the excised mass of Case 2. (a) The masses appear round with a smooth surface (bar represents 1 mm). (b) Pathologic examination shows the excised masses comprising mature hyaline cartilage formed by normal chondrocytes (bar represents 100 mum).
CRIOT2018-6346453.003.jpg
PMC6311760_01_CRIOT2018-6346453.003.jpg
fig3
On gross examination, the excised masses appeared round with a smooth surface (Figure 3(a)). Pathologic examination demonstrated that the excised masses consisted of mature hyaline cartilage formed by normal chondrocytes (Figure 3(b)).