Variability of the retrotympanum and its association with mastoid pneumatization in cholesteatoma patients.
Eur Arch Otorhinolaryngol
; 280(1): 131-136, 2023 Jan.
Article
em En
| MEDLINE
| ID: mdl-35695918
ABSTRACT
PURPOSE:
This study aimed to investigate the variability of the retrotympanum in patients undergoing surgical treatment for cholesteatoma.METHODS:
We included 59 ears of patients undergoing middle ear surgery for cholesteatoma who had preoperative computed tomography scans. A retrospective analysis of the medical records was conducted. The sinus tympani (ST), subtympanic sinus (STS) and facial recess (FR) were classified into types A-C based on the relationship of their extension to the facial nerve. The mastoid and petrous apex were assessed and categorized as normal pneumatized or sclerotic.RESULTS:
Type A extension was the most frequently found in all sinuses (ST 64%, FR 77%, STS 69%), Type B extension was found more often in ST (34%) and STS (24%) than in FR (15%). A very deep extension was found only rarely (ST 2%, FR 8%, STS 7%). A sclerotic mastoid was found in 67% of cases. Those cases showed a statistically significant difference regarding retrotympanum pneumatization when compared with normal mastoid.CONCLUSION:
The most frequent variant of retrotympanic pneumatization in relation to the facial nerve was type A in all subsites in cholesteatoma patients. The variability among patients with cholesteatoma is different to previously published results in healthy subjects. Moreover, the pneumatization of the retrotympanum is associated with mastoid pneumatization.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Colesteatoma
/
Processo Mastoide
Tipo de estudo:
Risk_factors_studies
Limite:
Humans
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article