Non-echoplanar diffusion weighted imaging in the detection of post-operative middle ear cholesteatoma: navigating beyond the pitfalls to find the pearl.

Unlabelled: Non-echoplanar diffusion weighted magnetic resonance imaging (DWI) has established itself as the modality of choice in detecting and localising post-operative middle ear cleft cholesteatoma. Despite its good diagnostic performance, there are recognised pitfalls in its radiological interpretation which both the radiologist and otologist should be aware of. Our article highlights the various pitfalls and provides guidance for improving radiological interpretation and navigating beyond many of the pitfalls.

Comparing diffusion weighted MRI in the detection of post-operative middle ear cholesteatoma in children and adults.

Introduction: There is a limited evidence base for the use of diffusion weighted MRI (DWMRI) in the assessment of post-operative cholesteatoma in children. This is important to address as this technique is particularly relevant in a paediatric setting.

Methods: We searched a prospectively collected database of patients undergoing DWMRI for the assessment of residual and recurrent cholesteatoma.

Facial extention of ear pathology: infected cholesteatoma causing a parotid abscess.

A man in his early 30s presented with right-sided preauricular swelling and facial oedema. He had a history of acid injury to his right ear as a child resulting in pinna deformity and subsequent blind sac closure of the external auditory canal. Imaging showed abnormal ear anatomy and abnormal density of the right parotid gland.

Detecting cholesteatoma with non-echo planar (HASTE) diffusion-weighted magnetic resonance imaging.

Objective: The purpose of this study was to evaluate the diagnostic performance of half-Fourier-acquisition single-shot turbo-spin-echo (HASTE) diffusion-weighted magnetic resonance imaging (DWMRI) in the detection of cholesteatoma.

Study Design: Prospective blinded comparative study.

Setting: London teaching hospital.