PMC8012142_01
A brownish, firm, papillomatous, painless mass in the cartilaginous posterior portion of the left external auditory canal.
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fig1
On physical examination, a brownish, firm, papillomatous, painless mass was observed in the cartilaginous posterior portion of the left EAC (Figure 1).
Temporal bone computed tomography revealing a 0.5 x 0.5 cm low-density mass in the cartilaginous portion of the left external auditory canal and low-density material with adjacent bony erosion medial to the mass: (a) axial view; (b) coronal view.
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fig2
On temporal bone computed tomography, a 0.5 x 0.5 cm low-density mass was observed in the cartilaginous portion of the left EAC, and a low-density material with adjacent bony erosion was observed medial to the mass (Figure 2).
Surgical specimen of the 0.5 x 0.5 cm, brownish, firm, papillomatous mass (a). Histopathologic image showing dermal nests and cords of nevus cells with no junctional activity (hematoxylin-eosin, x200) (b). Postoperative endoscopic view of the left external auditory canal showing no recurrence and no bony erosion (c).
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In microscopic surgery, the 0.5 x 0.5 cm, brownish, firm, papillomatous mass was excised completely (Figure 3(a)), and the wax and keratin material medial portion of the EAC behind the mass was removed. Dermal nests and cords of nevus cells showed no junctional activity (Figure 3(b)). One year and one month later, there was no recurrence and no bony erosion (Figure 3(c)).