The role of diffusion-weighted magnetic resonance imaging using PROPELLER sequence in diagnosis of postoperative cholesteatoma
Aslıhan Semiz Oysu1, Çağatay Oysu2
1Sağlık Bilimleri Üniversitesi Ümraniye Eğitim Ve Araştırma Hastanesi Radyoloji Kliniği
2Marmara Üniversitesi Tıp Fakültesi Kulak Burun Boğaz Hastalıkları Anabilim Dalı
Keywords: Cholesteatoma, diffusion-weighted, magnetic resonance imaging, postoperative.
Abstract
OBJECTIVE: This study aims to evaluate the role of diffusion-weighted imaging (DWI) using periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) sequence for the diagnosis of residual or recurrent postoperative cholesteatoma.
METHODS: Between June 2015 and December 2018, a total of 30 postoperative ears of 28 patients (18 males, 10 females; mean age 33.5 years; range, 10 to 61 years) with a history of revision surgery for suspected residual or recurrent cholesteatoma who had a PROPELLER DWI before revision operation were included in the study. The presence of a lesion with diffusion restriction at the previous operation site on PROPELLER DWI was accepted as positive for cholesteatoma and the results were compared to the intraoperative and histopathological findings.
RESULTS: On PROPELLER DWI, a lesion with diffusion restriction at the operation site was found in 29 ears. Surgery and histopathologial examination revealed a cholesteatoma in all ears. The sensitivity of PROPELLER DWI was calculated to be 96.7%.
CONCLUSION: Our study results suggest that PROPELLER DWI may be useful in detection of residual or recurrent cholesteatoma.