PMC7750746_01
(a) A 0.5 cm x 0.5 cm anterior-based, pedunculated, bony mass was observed in the
right external auditory canal; (b) temporal bone computed tomography revealed a
0.5 cm x 0.5 cm anterior-based, pedunculated, bony mass originating from the
tympanosquamous suture line, and (c) histopathologic image showed stratified squamous
epithelium overlying the mass of trabeculae of mature lamellar bone (arrow) with a
variable amount of fibrofatty marrow tissue (arrowhead) (hematoxylin-eosin, x40).
10.1177_2050313X20981469-fig1.jpg
PMC7750746_01_10.1177_2050313X20981469-fig1.jpg
fig1-2050313X20981469
On physical examination, an ovoid hard mass was observed in the right EAC (Figure 1(a)). Temporal bone computed tomography revealed a 0.5 cm x 0.5 cm anterior-based, pedunculated, bony mass originating from the tympanosquamous suture line (Figure 1(b)). Histopathologic findings showed lamellated bone covered with stratified squamous epithelium with a variable amount of fibrofatty marrow tissue, consistent with spongiotic osteoma (Figure 1(c)).
PMC7750746_02
A 0.6 cm x 0.5 cm anterior-based, pedunculated, bony mass was observed in the right
external auditory canal: (a) transcanal view, (b) temporal bone computed tomography,
and (c) histopathologic image.
10.1177_2050313X20981469-fig2.jpg
PMC7750746_02_10.1177_2050313X20981469-fig2.jpg
fig2-2050313X20981469
On physical examination, an ovoid hard mass was observed in the right EAC (Figure 2(a)). Temporal bone computed tomography revealed a 0.6 cm x 0.5 cm anterior-based, pedunculated, bony mass originating from the tympanosquamous suture line (Figure 2(b)). As in Case 1, surgery was performed, and pathology revealed a spongiotic osteoma (Figure 2(c)).