PubMed Açık Erişimli Yayınlar

Permanent URI for this collectionhttps://hdl.handle.net/11727/10763

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Author: search.filters.author.Kansu, Leyla

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    Benign Paroxysmal Positional Vertigo After Nonotologic Surgery: Case Series
    (2015) Kansu, Leyla; Aydin, Erdinc; Gulsahi, Kamran; 25838683
    Benign paroxysmal positional vertigo is one of the most common types of vertigo caused by peripheral vestibular dysfunction. Although head trauma, migraine, longterm bed rest, Menie're disease, viral labyrinthitis, and upper respiratory tract infections are believed to be predisposing factors, most cases of benign paroxysmal positional vertigo are idiopathic. Ear surgery is another cause, but after nonotologic surgery, attacks of benign paroxysmal positional vertigo are rare. We describe three cases of benign paroxysmal positional vertigo attacks after non-otologic surgery (one patient after a nasal septoplasty and two patients after dental endodontic treatment) and discuss the pathophysiological mechanismof benign paroxysmal positional vertigo seen after non-otologic surgery, its diagnosis and treatment
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    Sex differences in adult craniofacial parameters
    (2015) Avci, Suat; Ergun, Tarkan; Aydin, Erdinc; Kansu, Leyla; 25935592
    To compare normal male and female craniofacial parameters in adults and evaluate associations of sex and intercochlear distance with other craniofacial parameters. In 60 normal adults (30 men and 30 women) who had no otitis media, craniofacial parameters were measured retrospectively on two-dimensional reformatted computed tomography scans. Compared with women, men had significantly greater mean osseous auditory tube length, cartilaginous auditory tube length, mastoid length, intercochlear distance, sella to posterior nasal spine distance, sella to basion distance, and nasopharynx sagittal area. The intercochlear distance was significantly correlated with mastoid depth, midpoint of the pharyngeal opening distance, sella to nasion distance, and nasopharynx sagittal area and inversely with angle of the auditory tube. Most men and women had Korner septum present, and mean thickness of Korner septum was significantly greater in men than women. Some craniofacial parameters, especially vertical parameters, differ with sex. These differences begin in childhood and continue in adulthood. Sex must be considered when planning a craniofacial morphologic study, and results of a craniofacial morphologic study should be evaluated with caution when there is no sex matching of the patient and control groups.
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    Relation of Actinomyces with Tonsillar Hypertrophy and Antibiotic Use
    (2017) Kansu, Leyla; 0000-0003-1707-7760; 29392046; H-8232-2013
    Objective: This study aimed to investigate the incidence of actinomyces in tonsillar tissues of patients undergoing tonsillectomy and to determine the association among tonsillar volume, preoperative antibiotic use, and presence of actinomyces in tonsil tissues. Methods: In this study, 142 patients who underwent tonsillectomy in last four years were included. Of the total patients, 97 (66.9%) were children and 47 (33.1%) were adults. The patients' age, sex, preoperative antibiotic use, tonsillar volume, and presence of actinomyces in tonsillar tissues were recorded. Results: Actinomyces was identified in tonsillar tissues of 16 (16.4%) pediatric and 21 (44.6%) adult patients. Of all pediatric patients positive for actinomyces, 13 were males and three were females whereas of all adult patients positive for actinomyces, 14 were males and seven were females. Tonsillar tissue volumes in both pediatric and adult patients positive for actinomyces were statistically higher than the actinomyces negative ones. Antibiotic use was higher and the incidence of actinomyces was lower in pediatric patients than in adult patients positive for actinomyces. Conclusion: Our study results revealed that actinomyces was prominent in adult patients with tonsillar hypertrophy. In addition, the frequent use of antibiotic decreased the incidence of actinomyces in tonsillar tissues.
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    Shrinkage of Nasal Mucosa and Cartilage During Formalin Fixation
    (2017) Kansu, Leyla; Aydin, Erdinc; Akkaya, Hampar; Avci, Suat; Akalin, Nalan; 0000-0003-1707-7760; 0000-0001-6864-7378; 0000-0003-2155-8014; 0000-0002-7070-6901; 28552840; H-8232-2013; AAJ-2379-2021; ABG-2028-2020; O-3636-2018
    Background: After resection, specimens are subjected to formalin fixation during histological processing. This procedure can result in tissue shrinkage, with the amount of shrinkage related to tissue composition and tissue type. Aims: To evaluate the shrinkage of nasal mucosa and cartilage tissue and compare differences in shrinkage after resection, after formalin fixation, and during microscopic examination to understand differences in the rate of shrinkage of different tissue types. Study Design: Animal experimentation. Methods: Fresh nasal septa were excised from sheep (10 mm diameter in 40 sheep and 20 mm diameter in 40 sheep). The mucosa was separated from one side of the cartilage, with the contralateral mucosa remaining attached to the cartilage. Specimen diameters were measured in situ, after resection, after fixation for 6 or 24 hours (10% formalin), and during microscopic examination. Results: There were no differences between the in situ and after resection diameters of any tissue components (free mucosa, mucosa attached to cartilage, and cartilage) of all nasal specimens (10-or 20-mm diameter and 6or 24-hour fixation). However, significant shrinkage occurred between resection and after-fixation. Regarding tissue specimens that were fixed for different durations (6 or 24 hours), we observed a significantly smaller mean tissue diameter in specimens fixed for 24 hours versus those fixed for 6 hours for mucosa attached to cartilage (in the 10-mm diameter after-fixation samples), free mucosa (in the 20-mm diameter after-fixation samples), mucosa attached to cartilage (in the 20-mm diameter after-fixation and microscopic measurement samples), and cartilage (in the 20-mm diameter after-fixation samples). Tissue shrinkage was greatest in free mucosal tissue and least in cartilage. Conclusion: These results should be considered when evaluating patients undergoing surgical procedures for nasal cavity and paranasal sinus malignancies. Surgical margins should be measured before fixation or evaluated if possible before fixation and shrinkage.