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Int Arch Otorhinolaryngol 2015; 19(01): 001-004
DOI: 10.1055/s-0034-1382096
Original Research
Thieme Publicações Ltda Rio de Janeiro, Brazil

Anatomopathology of the Superstructure of the Stapes in Patients with Otosclerosis

Bettina Carvalho
1   Department of ENT, IPO, Curitiba, PR, Brazil
,
Rogerio Hamerschmidt
1   Department of ENT, IPO, Curitiba, PR, Brazil
,
Jose Ederaldo Telles
2   Department of Pathology, HC/UFPR, Curitiba, PR, Brazil
,
Nicole Richter
3   Department of Pathology, IPO, Curitiba, PR, Brazil
› Author Affiliations
Further Information

Publication History

13 February 2014

28 March 2014

Publication Date:
18 July 2014 (online)

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Abstract

Introduction Otosclerosis is a disease that causes bone resorption and deposition in the auditory structures, leading to deafness. Many studies have evaluated the histopathology of the stapes footplate in this disease (osteoblasts, osteoclasts, vascular proliferation, fibroblasts, and histiocytes), but we found no studies in the literature involving the histology of the superstructure of the stapes.

Objectives To perform an analysis under optical microscopy of histopathologic findings of the superstructure of the stapes from patients with otosclerosis.

Methods A contemporary cross-sectional cohort study of pathology analysis of superstructures of the stapes of patients with otosclerosis.

Results Fifteen superstructures of stapes in patients with otosclerosis operated in our service and four stapes of cadavers used for dissection (controls) were evaluated. No areas of bone resorption or deposition or presence of osteoclasts and osteoblasts in the superstructure of the stapes were found. However, we found in the more distal portions of the crura areas with prominent cementitious lines and woven bone, which was different than the mature trabecular bone found in the head of the stapes or in the controls.

Conclusion There were histologic changes in the superstructure of the stapes in patients with otosclerosis operated in our service.

Keywords

otosclerosis - deafness - stapes
 

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