ORIGINAL RESEARCH
High Resolution Computed Tomography Imaging Findings in Chronic Otitis Media with and Without Cholesteatoma
Kolesteatomlu ve Kolesteatomsuz Kronik Otitis Mediada Yüksek Rezolüsyonlu Bilgisayarlı Tomografi Bulguları
Received Date : 20 Mar 2023
Accepted Date : 24 Apr 2023
Available Online : 03 May 2023
Melahat KULa, Sezer Nil YILMAZER ZORLUa, Funda Seher ÖZALP ATEŞb, Sena ÜNALa
aDepartment of Radiology, Ankara University Faculty of Medicine, İbni Sina Hospital, Ankara, Türkiye
bDepartment of Biostatistics, Manisa Celal Bayar University Faculty of Medicine, Manisa, Türkiye
Doi: 10.24179/kbbbbc.2023-96825 - Makale Dili: EN
KBB ve BBC Dergisi. 2023;31(3):162-9
Copyright © 2020 by Turkey Association of Society of Ear Nose Throat and Head Neck Surgery. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
ABSTRACT
Objective: To correlate high-resolution computed tomography
(HRCT) imaging findings of chronic otitis media (COM) with
and without cholesteatoma regarding the presence, site, and severity of
bone defects. Material and Methods: Temporal bone HRCT images
of patients with COM, obtained between 2011 and 2022, were retrospectively
reviewed. Patients with a soft tissue mass in the tympanic
cavity were allocated into either COM with cholesteatoma (CH+COM)
or without cholesteatoma group (CH-COM) based on pathology results
and-/or magnetic resonance imaging findings. Computed tomography
images were analyzed with regard to the presence, site and severity of
middle ear bone erosions/defects and group comparisons were made.
Results: A total of 60 patients (CH+COM: 23 patients, CH-COM: 37
patients) were included. Blunting of the scutum, defect of the tegmen
tympani, absence/incompleteness of the Körner's septum, erosion of the
ossicular chain, and destruction of the medial and lateral tympanic walls
were significantly more frequent in the CH+COM group (p<0.05).
While small bone discontinuities (≤2 mm) of the tegmen tympani or
blunting of the scutum were present in both groups, a greater defect of
these structures was observed only in the CH+COM group. No significant
difference was detected neither regarding the location of the soft
tissue masses nor the presence of posterior wall defects (p>0.05). Conclusion:
Radiologists should be aware of bone erosions when evaluating
temporal bone HRCT images of patients with COM, even if
cholesteatoma is not suspected. Furthermore, reporting the severity of
bone destruction could be a helpful hint regarding the presence of
cholesteatoma and might impact surgical planning.
Keywords: Computed tomography; otitis media; cholesteatoma
ÖZET
Amaç: Çalışmada kolesteatomlu ve kolestatomsuz kronik otitis
media (KOM) tanılı olguların yüksek çözünürlüklü bilgisayarlı tomografi
(YÇBT) görüntüleme bulgularının kemik defektlerinin varlığı,
yeri ve şiddeti açısından karşılaştırılması amaçlanmıştır. Gereç ve Yöntemler:
2011-2022 yılları arasında temporal kemik YÇBT ile tetkik
edilen KOM hastaların YÇBT görüntüleri retrospektif olarak incelendi.
Timpanik boşlukta yumuşak doku kitlesi olan hastalar, patoloji sonuçları
ve-/veya manyetik rezonans görüntüleme bulgularına göre kolesteatomlu
(K+KOM) veya kolestatomsuz KOM (K-KOM) grubuna
ayrıldı. Bilgisayarlı tomografi görüntüleri orta kulak kemik erozyonlarının/
defektlerinin varlığı, yeri ve şiddeti açısından değerlendirildi ve
grup karşılaştırmaları yapıldı. Bulgular: Bu çalışmaya toplam 60 hasta
(K+KOM: 23 hasta, K-KOM: 37 hasta) dâhil edildi. Skutumda küntleşme,
tegmen timpani defekti, Körner septum yokluğu/devamsızlığı,
kemikçik zincirinde erozyon ve medial ve lateral timpanik duvarlarda
harabiyet C+COM grubunda anlamlı olarak daha sıktı (p<0,05). Tegmen
timpanide küçük kemik devamsızlıkları (≤2 mm) veya skutumda
küntleşme her iki grupta mevcutken, bu yapılarda sadece K+COM grubunda
daha şiddetli defektler gözlendi. Yumuşak doku kitlelerinin yerleşimi
ile arka duvar defekti varlığı açısından 2 grup arası anlamlı fark
saptanmadı (p>0,05). Sonuç: KOM’lu olguların temporal kemik YÇBT
görüntülerinin değerlendirmesinde radyologların kolesteatom şüphesinden
bağımsız olarak olası kemik erozyonları açısından dikkatli olması
gerekmektedir. Ayrıca kemik yıkımının şiddetinin bildirilmesi,
kolesteatomun varlığına ilişkin ipucu sağlayarak cerrahi planlamada
önemli olabilir.
Anahtar Kelimeler: Bilgisayarlı tomografi; otitis media; kolesteatom
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