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Histopathological changes in septal and nasal mucosa of patients with nasal septum deviation are not well known. Biopsies of septal and lateral nasal mucosae from both sides of nose were obtained from 20 patients undergoing septoplasty and control group of 10 patients undergoing head and neck surgery. Histopathological changes including lymphocytic infiltration and squamous metaplasia were compared. This study determined significantly higher rate of squamous metaplasia and lymphocytic infiltration in septal mucosa opposite the deviation compared to control group. Furthermore, there was a significantly higher rate of lymphocytic infiltration in the lateral nasal wall mucosa opposite the deviation when compared to control group. Increased lymphocytic infiltration and squamous metaplasia are observed on both sides of nasal mucosa; however, they are more severe on the side opposite the deviation. Septal deviation predisposes to chronic mucosal inflammation and squamous metaplasia, both of which may render patients susceptible to chronic rhinosinusitis.

OBJECTIVE:The aim was to evaluate surgical techniques and their relationship to postoperative success rate and hearing outcomes in acquired atresia of the external auditory canal. MATERIALS and METHODS:In this article, 24 patients with acquired atresia of the external auditory canal were retrospectively evaluated regarding their canal status, hearing, and postoperative success. RESULTS:Acquired stenosis occurs more commonly in males with a male: female ratio of 2-3:1; it seems to be a disorder affecting young adults. Previous ear surgery (13 patients, 54.2%) and external ear trauma (11 patients, 45.8%) were the main etiological factors of acquired ear canal stenosis. Mastoidectomy (12/13) and traffic accidents (8/11) comprise the majority of these etiological factors. Endaural incision is performed in 79.2% and postauricular incision for 20.8% of cases during the operation. As types of surgical approach, transcanal (70.8%), transmastoid (20.8%), and combined (8.4%) approaches are chosen. The atretic plate is generally located at the bony-cartilaginous junction (37.5%) and in the cartilaginous canal (33.3%); the bony canal is involved in a few cases only. Preserved healthy canal skin, split-or full-thickness skin grafts, or pre-or postauricular skin flaps are used to line the ear canal, but preserved healthy canal skin is preferred. CONCLUSION:The results of surgery are generally satisfactory, and complications are few if surgical principles are followed.

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Background This study aims to develop and validate a new classification system that better predicts combined risk of neurological and neurovascular complications following CBT surgery, crucial for treatment decision‐making. Methods Multinational retrospective cohort study with 199 consecutive cases. A cohort of 132 CBT cases was used to develop the new classification. To undertake external validation, assessment was made between the actual complication rate and predicted risk by the model on an independent cohort (n = 67). Results Univariate analyses showed statistically significant associations between developing a complication and the following factors: craniocaudal dimension, volume, Shamblin classification, and Mehanna types. In the multivariate prognostic model, only Mehanna type remained as a significant risk predictor. The risk of developing complications increases with increasing Mehanna type. Conclusions We have developed and then validated a new classification and risk stratification system for CBTs, which demonstrated better prognostic power for the risk of developing neurovascular complications after surgery.

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