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Cholesteatoma mri

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https://www.readbyqxmd.com/read/27921171/computed-tomography-and-magnetic-resonance-fusion-imaging-in-cholesteatoma-preoperative-assessment
#1
Agustín Campos, Federico Mata, Rosa Reboll, María Luisa Peris, Jorge Basterra
The purpose of this study is to describe a method for developing fusion imaging for the preoperative evaluation of cholesteatoma. In 33 patients diagnosed with cholesteatoma, a high-resolution temporal bone computed tomography (CT) scan without intravenous contrast and propeller diffusion-weighted magnetic resonance imaging (MRI) were performed. Both studies were then sent to the BrainLAB work station, where the images were fused to obtain a morphological and color map. Intraoperative findings coincided with fusion CT-MRI imaging in all but two patients...
December 5, 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/27773598/accuracy-of-conventional-mri-for-preoperative-diagnosis-of-intracranial-tumors-a-retrospective-cohort-study-of-762-cases
#2
Peng-Fei Yan, Ling Yan, Zhen Zhang, Adnan Salim, Lei Wang, Ting-Ting Hu, Hong-Yang Zhao
BACKGROUND: Conventional magnetic resonance imaging (MRI) is considered a valuable tool for preoperative diagnosis of intracranial tumors. We assessed its accuracy in the diagnosis of intracranial tumors in usual clinical practice. MATERIALS AND METHODS: MRI reports of 762 patients who had undergone conventional brain MRI prior to surgery were retrospectively reviewed. A 4-grade scoring system was devised to establish diagnostic agreement. Each tumor type was compared with the corresponding pathological diagnoses by dichotomization...
October 20, 2016: International Journal of Surgery
https://www.readbyqxmd.com/read/27761737/middle-ear-adenoma-with-neuroendocrine-differentiation-a%C3%A2-pediatric-case-report
#3
Elisabeth Sterrer, Franz Windisch, Kurt Frey, Klaus Rettensteiner, Benjamin Loader
BACKGROUND: Middle ear adenoma with neuroendocrine differentiation (MEA-ND), also known as carcinoid tumor of the middle ear, is an extremely rare neoplasm, especially when located within the tympanic cavity. To the best of our knowledge, this represents the first pediatric case of a MEA-ND described in Europe. Excluding the present case, only three other pediatric cases of this disease have been published globally. CASE REPORT: We report on a 15-year-old female patient who presented with conductive hearing loss of the right ear...
October 19, 2016: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/27755452/monitoring-progression-of-12-cases-of-non-operated-middle-ear-cholesteatoma-with-non-echoplanar-diffusion-weighted-magnetic-resonance-imaging-our-experience
#4
Phui Yee Wong, Ravi K Lingam, Surojit Pal, Pushpa Khatri, Robert Nash, Arvind Singh
AIM: The aim of this study is to gain insight into the disease progression and behavior of primary cholesteatoma in a cohort of patients who did not have surgery using non-echoplanar diffusion-weighted magnetic resonance imaging (DW MRI) serial monitoring. METHODS: Retrospective longitudinal observational study of 12 cases of middle ear cleft cholesteatoma diagnosed between 2009 and 2014 where surgery was not performed for various reasons. All cases were monitored radiologically with non-echoplanar half-Fourier acquisition single-shot turbo spin-echo diffusion weighted imaging annually for a median period of 23 months (between 11 and 45 mo) to evaluate for changes in disease volume and direction of growth...
December 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/27729145/postoperative-diffusion-weighted-mri-and-preoperative-ct-scan-fusion-for-residual-cholesteatoma-localization
#5
Musaed Alzahrani, Rami Alhazmi, Manon Bélair, Issam Saliba
OBJECTIVE: To evaluate the ability of preoperative mastoid high resolution Computerized tomography (CT Scan) fusion with the postoperative diffusion weighted magnetic resonance imaging (Non-EPI DWI) to accurately localize the residual cholesteatoma thus sparing an unnecessary postoperative CT scan radiation. PATIENTS AND METHODS: this is a prospective study performed in our tertiary care center. We followed up prospectively a consecutive group of patients presenting with middle ear cholesteatoma using preoperative mastoid CT scans, postoperative mastoid CT scan and mastoid diffusion weighted MRI (DWI) between 2012 and 2013...
November 2016: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/27716596/assessment-of-mastoid-function-with-magnetic-resonance-imaging-after-canal-wall-up-cholesteatoma-surgery
#6
William J Parkes, Sharon L Cushing, Blake C Papsin, Susan I Blaser, Adrian L James
OBJECTIVE: To use magnetic resonance imaging (MRI) to assess the extent of mastoid opacification after canal wall up (CWU) cholesteatoma surgery. MATERIALS AND METHODS: Thirty-five children in whom post-operative MRI had been obtained after CWU surgery. Cholesteatoma confined to the meso- and/or epi-tympanum was removed using a transcanal approach (n=18). More extensive disease required a combined approach tympanomastoidectomy (CAT, n=17). Mastoid opacification was assessed in both ears by a neuroradiologist blind to surgical details using an ordinal scale from 0 (no opacification) to 6 (completely opacified)...
August 2016: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/27701821/diffusion-weighted-magnetic-resonance-imaging-for-residual-and-recurrent-cholesteatoma-a-systematic-review-and-meta-analysis
#7
J Muzaffar, C Metcalfe, S Colley, C Coulson
BACKGROUND: Diagnosis and management of recurrent or residual cholesteatoma can be problematic. Diffusion-weighted imaging magnetic resonance imaging (MRI) sequences have been used for follow-up of such lesions. More recent non-echoplanar imaging (non-EPI) sequences are thought to be superior to older echoplanar imaging (EPI) sequences. OBJECTIVE OF REVIEW: Evaluate whether diffusion-weighted magnetic resonance imaging is useful in the diagnosis of recurrent or residual cholesteatoma...
October 4, 2016: Clinical Otolaryngology
https://www.readbyqxmd.com/read/27625184/diffusion-weighted-magnetic-resonance-imaging-of-cholesteatoma-using-propeller-at-1-5t-a-single-centre-retrospective-study
#8
Sharon E Clarke, Dipan Mistry, Talal AlThubaiti, M Naeem Khan, David Morris, Manohar Bance
PURPOSE: The purpose of this study was to evaluate the sensitivity, specificity, and positive and negative predictive values of the diffusion-weighted periodically rotated overlapping parallel lines with enhanced reconstruction (PROPELLER) technique in the detection of cholesteatoma at our institution with surgical confirmation in all cases. METHODS: A retrospective review of 21 consecutive patients who underwent diffusion-weighted PROPELLER magnetic resonance imaging (MRI) on a 1...
September 10, 2016: Canadian Association of Radiologists Journal, Journal L'Association Canadienne des Radiologistes
https://www.readbyqxmd.com/read/27558789/non-echoplanar-diffusion-weighted-imaging-in-the-detection-of-post-operative-middle-ear-cholesteatoma-navigating-beyond-the-pitfalls-to-find-the-pearl
#9
REVIEW
Ravi K Lingam, Robert Nash, Anooj Majithia, Ali Kalan, Arvind Singh
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...
October 2016: Insights Into Imaging
https://www.readbyqxmd.com/read/27414044/fusion-of-computed-tomography-and-propeller-diffusion-weighted-magnetic-resonance-imaging-for-the-detection-and-localization-of-middle-ear-cholesteatoma
#10
Garrett D Locketz, Peter M M C Li, Nancy J Fischbein, Samantha J Holdsworth, Nikolas H Blevins
Importance: A method to optimize imaging of cholesteatoma by combining the strengths of available modalities will improve diagnostic accuracy and help to target treatment. Objective: To assess whether fusing Periodically Rotated Overlapping Parallel Lines With Enhanced Reconstruction (PROPELLER) diffusion-weighted magnetic resonance imaging (DW-MRI) with corresponding temporal bone computed tomography (CT) images could increase cholesteatoma diagnostic and localization accuracy across 6 distinct anatomical regions of the temporal bone...
October 1, 2016: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/27413272/spontaneous-external-auditory-canal-cholesteatoma-in-a-young-male-imaging-findings-and-differential-diagnoses
#11
Yashant Aswani, Ravi Varma, Gayathri Achuthan
A cholesteatoma is a non-neoplastic lesion of the petrous temporal bone commonly described as "skin in the wrong place." It typically arises within the middle ear cavity, may drain externally via tympanic membrane (mural type), or may originate in the external auditory canal (EAC). The latter type is rarely encountered and typically affects the elderly. EAC cholesteatoma poses diagnostic challenges because it has numerous differential diagnoses. The present case describes a 19-year-old male who presented with gradually progressive diminution of hearing in a previously naïve right ear since 8 months...
April 2016: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/27304447/cholesteatoma-and-coexisting-findings-diagnosed-incidentally-on-mri
#12
Gahl Greenberg, Ana Eyal, Arkadi Yakirevitch, Michael Wolf, Lela Migirov
The explosive growth in the use of diffusion-weighted magnetic resonance imaging (MRI) in the pre- and postoperative evaluations of patients with cholesteatoma has led to a concomitant increase in the number of incidental findings in this population. We describe our retrospective examination of MRI studies in cholesteatoma patients to look for the presence of other coexisting abnormalities. We examined the brain MRIs of 103 patients-45 males and 58 females, aged 3 to 81 years (mean: 31.9 ± 21.3)-who had undergone pre- or postoperative imaging during the management of a cholesteatoma...
June 2016: Ear, Nose, & Throat Journal
https://www.readbyqxmd.com/read/27023012/long-term-results-of-troublesome-cwd-cavity-reconstruction-by-mastoid-and-epitympanic-bony-obliteration-cwr-bot-in-adults
#13
Jean-Philippe Vercruysse, Joost J S van Dinther, Bert De Foer, Jan Casselman, Thomas Somers, Andrzej Zarowski, Cor C Cremers, Erwin Offeciers
OBJECTIVE: To present the long-term surgical outcome of the bony mastoid and epitympanic obliteration technique with canal wall reconstruction (CWR-BOT) in adults with an unstable cavity after previous canal wall-down surgery for extensive cholesteatoma. STUDY DESIGN: Retrospective study. INTERVENTIONS: Therapeutic. SETTING: Tertiary referral center. PATIENTS: Fifty consecutive adult patients undergoing a CWR-BOT between 1998 and 2009...
July 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/26905824/repeated-postoperative-follow-up-diffusion-weighted-magnetic-resonance-imaging-to-detect-residual-or-recurrent-cholesteatoma
#14
Stefan Steens, Wulphert Venderink, Dirk Kunst, Anton Meijer, Emmanuel Mylanus
OBJECTIVE: In our institution, follow-up diffusion-weighted imaging (DWI) after cholesteatoma surgery is performed at least twice. The aim of this study was to determine the yield of the second follow-up DWI (D-W MRI-2) in patients in whom the first postoperative DWI (D-W MRI-1) was negative for residual or recurrent cholesteatoma. STUDY DESIGN: A retrospective analysis. SETTING: Tertiary referral center. PATIENTS: Patients were included if 1) they had at least two postoperative DWI examinations after a canal wall up procedure with apparently complete cholesteatoma resection; 2) D-W MRI-1 was performed between 6 and 24 months after surgery and D-W MRI-2 performed at least 6 months after D-W MRI-1; 3) both DWI examinations were of good quality and covering the whole mastoid-middle ear region; 4) D-W MRI-1 was unequivocally negative for cholesteatoma; and 5) there was no clinical suspicion on otoscopy of recurrent cholesteatoma nor a surgical intervention between these two postoperative DWI examinations...
April 2016: Otology & Neurotology
https://www.readbyqxmd.com/read/26829926/cochlear-implant-and-congenital-cholesteatoma
#15
J Mierzwinski, A J Fishman, T Grochowski, S Drewa, M Drela, P Winiarski, I Bielecki
BACKGROUND: The occurence of cholesteatoma and cochlear implant is rare. Secondary cholesteatomas may develop as a result of cochlear implant surgery. Primarily acquired cholesteatoma is not typically associated with congenital sensorineural hearing loss or cochlear implant in children. The occurrence of congenital cholesteatoma during cochlear implant surgery has never been reported before, partly because all patients are preoperatively submitted to imaging studies which can theoretically exclude the disease...
2016: Journal of Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/26527613/a-systematic-review-of-non-echo-planar-diffusion-weighted-magnetic-resonance-imaging-for-detection-of-primary-and-postoperative-cholesteatoma
#16
REVIEW
Sylvia L van Egmond, Inge Stegeman, Wilko Grolman, Mark C J Aarts
OBJECTIVE: To investigate the diagnostic value of non-echo planar diffusion-weighted magnetic resonance imaging (DW-MRI) for primary and recurrent/residual (postoperative) cholesteatoma in adults (≥18 years) after canal wall up surgery. DATA SOURCES: We conducted a systematic search in PubMed, Embase, and Cochrane up to October 22, 2014. REVIEW METHODS: All studies investigating non-echo planar DW-MRI for primary and postoperative cholesteatoma were selected and critically appraised for relevance and validity...
February 2016: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/26223720/does-diffusion-weighted-mr-imaging-change-the-follow-up-strategy-in-cases-with-residual-cholesteatoma
#17
Yusuf Dündar, Fatih Alper Akcan, Alper Dilli, Emel Tatar, Hakan Korkmaz, Ali Özdek
OBJECTIVE: To analyze the effectiveness of diffusion-weighted magnetic resonance imaging (DW-MRI) in the evaluation of recurrent cholesteatomas. MATERIALS AND METHODS: Twenty-three patients undergoing second-look surgery were included in our study. There were 14 men and 9 women with ages ranging from 10 to 50. All patients underwent DW-MRI prior to second-look surgery. All magnetic resonance imaging (MRI) examinations were performed with a 1.5-T MRI unit using a standard 8-channel neurovascular coil...
April 2015: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/26223719/value-of-echo-planar-diffusion-weighted-magnetic-resonance-imaging-for-detecting-tympanomastoid-cholesteatoma
#18
Ali Cihan Yiğiter, Ercan Pınar, Abdülkadir İmre, Nezahat Erdoğan
OBJECTIVE: The aim of this study was to evaluate the diagnostic accuracy of echo-planar diffusion-weighted magnetic resonance imaging (EP-DWI) and high-resolution computed tomography (HRCT) in the detection and localization of cholesteatoma. MATERIALS AND METHODS: Fifty-four patients were prospectively included in this study. Patients with suspected primary or residual cholesteatoma were evaluated by EP-DWI and HRCT before tympanomastoid surgery. Radiological findings were correlated with intraoperative findings...
April 2015: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/26164292/atypical-radiographic-features-of-skull-base-cholesterol-granuloma
#19
Christine T Dinh, Stefania Goncalves, Rita Bhatia, Kim Truong, Fred Telischi, Simon Angeli, Jacques Morcos, Adrien A Eshraghi
Cholesterol granulomas (CGs) are the most common benign lesions of the petrous apex (PA) and have distinct computed tomography (CT) and magnetic resonance imaging (MRI) characteristics. On CT, CGs of the PA (PACG) present as expansile lesions with erosion of bony trabeculae. MRI shows a hyperintense lesion on T1-and T2-weighted images and do not enhance with gadolinium. The objective is to describe the radiographic features of CGs of the skull base that do not arise from the PA. This study is a retrospective review...
June 2016: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/26071017/magnetic-resonance-imaging-at-one-year-for-detection-of-postoperative-residual-cholesteatoma-in-children-is-it-too-early
#20
COMPARATIVE STUDY
A Lecler, M Lenoir, J Peron, F Denoyelle, E N Garabedian, H Ducou le Pointe, J Nevoux
OBJECTIVE: To compare the residual cholesteatoma detection accuracy of diffusion-weighted (DW) and T1 delayed sequences for magnetic resonance at one year postoperative with second-look surgery in pediatric patients who have undergone primary middle ear surgery for cholesteatoma. METHODS: This was a prospective monocentric consecutive study conducted in a tertiary academic referral center. Children were referred for MR imaging (MRI) one year after surgery. A 1.5T MRI was utilized, using nonecho-planar DW images and delayed gadolinium-enhanced T1-weighted images...
August 2015: International Journal of Pediatric Otorhinolaryngology
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