case_images: PMC9761233_01
case_images: Pure tone audiometry. (A) Preoperative audiogram: moderate-severe conductive
  hearing loss. (B) Post-surgical audiogram: closure of the air-bone gap.
case_images: 10.1177_11795476221131196-fig1.jpg
case_images: PMC9761233_01_10.1177_11795476221131196-fig1.jpg
case_images: fig1-11795476221131196
case_images: Pure tone audiometry showed a bilateral conductive hearing loss, more severe in the right ear (Figure 1) due to the previous multiple episodes of external otitis in the acute phase of EB.
case_images: Preoperative Computed tomography. Arrows point at external auditory canal
  stenosis.
case_images: 10.1177_11795476221131196-fig2.jpg
case_images: PMC9761233_01_10.1177_11795476221131196-fig2.jpg
case_images: fig2-11795476221131196
case_images: CT showed no significant alterations, except for stenosis of the ear canals (Figure 2).
case_images: Intraoperative view. (A) Excision of the stenotic tissue (white arrow) from
  the external auditory canal. (B) Canaloplasty of the external auditory canal
  (white arrows) that allows a better exposition of the tympanic membrane
  (asterisk). (C) Positioning of the Thiersch graft (white arrow) in the
  external auditory canal. (D) Correctly positioned Thiersch graft (white
  arrow).
case_images: 10.1177_11795476221131196-fig3.jpg
case_images: PMC9761233_01_10.1177_11795476221131196-fig3.jpg
case_images: fig3-11795476221131196
case_images: Thiersch skin grafting (Figure 3). This approach was preferred to the endoauricolar one because it allowed a better view of the EAC and complete removal of external stenotic tissue and since plastic surgery for ear canal enlargement was a preventive measure for recurrence of ear canal stenosis.
case_images: Low-power magnification of the excised sample is shown in the top panel. Some
  glandular ducts and the small epidermoid cyst (asterisk) associated with a
  giant cell granuloma (arrow) are shown in the left and right bottom panels,
  respectively.
case_images: 10.1177_11795476221131196-fig4.jpg
case_images: PMC9761233_01_10.1177_11795476221131196-fig4.jpg
case_images: fig4-11795476221131196
case_images: Indeed, the sample consisted of chronically inflamed dense connective tissue containing focally dilated glandular ducts and a small epidermoid cyst associated with a giant cell granuloma (Figure 4).