References
1. Boyd AS, Neldner KH. Lichen planus.Journal of the American Academy of Dermatology. Oct 1991;25(4):593-619.
2. Rebora A. Lichen Planus. In: Dambra L, ed. Dermatologica Medica e Chirurgica . V ed2012:233-238.
3. Martin L, Moriniere S, Machet MC, Robier A, Vaillant L. Bilateral conductive deafness related to erosive lichen planus. The Journal of laryngology and otology. Apr 1998;112(4):365-366.
4. Kosec A, Kostic M, Ajduk J, Ries M. Hypertrophic recurring lichen planus of the external auditory canal.European annals of otorhinolaryngology, head and neck diseases.Apr 2019;136(2):123-126.
5. Hopsu E, Pitkaranta A. Idiopathic, inflammatory, medial meatal, fibrotising otitis presenting with lichen planus. The Journal of laryngology and otology. Aug 2007;121(8):796-799.
6. Sartori-Valinotti JC, Bruce AJ, Krotova Khan Y, Beatty CW. A 10-year review of otic lichen planus: the Mayo Clinic experience. JAMA dermatology. Sep 2013;149(9):1082-1086.
Images, tables, graphs or videos
Figure 1 : Pure tone audiometry of the patient that show a bilateral mixed hearing loss.
Figure 2: Free field Audiometry of the patient, aided and unaided.
Figure 3: Histopathologic examination of EAC biotic sample after hematoxylin-eosin staining, showing hyperkeratosis, hypergranulosis, irregular acanthosis, apoptosis of keratinocytes, linfo-histiocytic infiltration (A ×100, B x400).
Figure 4 Axial computed tomography (CT) scans of the middle ear. Black arrows showing a bilateral EAC stenosis and isodense tissue occupying the whole middle ear, bilaterally.