CholesteatomaNCT03305796
Detection of Cholesteatoma Using Diffusion Magnetic Resonance Imaging
An observational study of Cholesteatoma, run by Assiut University.
Trial summary
Cholesteatoma is a retraction pocket lined with squamous epithelium lined with keratin debris occurring within pneumatized spaces of the temporal bone. Cholesteatomas have a propensity for growth, bone destruction, and chronic infection.High-resolution computerized tomography is the method of choice for imaging the… Read more about this study
- Who is it for?
- Any age
- Conditions the study is for
- Cholesteatoma
- What is being tested?
- Diffusion magnetic resonance imaging
- Type of treatment
- Surgery or procedure
- How many people
- 30 participants
- Where
- No sites listed yet
- Study dates
- Nov 2017to Feb 2019
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Study population: All patients presented with suspected cholesteatoma in assiut university hospital
Who may be able to join
- • all patients presented with suspected primary cholesteatoma ,high risk retraction pockets ,Suspected recurrent or residual cholesteatoma after surgery .
Who cannot join
- Contraindication to magnetic resonance imaging (e.g., pacemaker, metallic implant,cochlear implant Or claustrophobia).
Trial locations and contacts
No sites are listed yet.
About this study
Cholesteatoma is a retraction pocket lined with squamous epithelium lined with keratin debris occurring within pneumatized spaces of the temporal bone. Cholesteatomas have a propensity for growth, bone destruction, and chronic infection.High-resolution computerized tomography is the method of choice for imaging the middle ear .
Read the detailed description
In patients with recurrent cholesteatoma, computerized tomography can show the extent of cholesteatoma in relation to the ossicles and mastoid process,but computerized tomography has a high negative predictive value if neither a soft-tissue mass nor bony destructions are shown.However, if a soft-tissue mass in the middle ear is seen on computerized tomography, diagnosis of the mass is not possible because cholesteatoma, mucoid secretion, granulation tissue and cholesterol granuloma can not be differentiated from one another on computerized tomography.
Standard magnetic resonance imaging shows tissues better than computerized tomography,Therefore in patients with cholesteatoma, magnetic resonance imaging plays a complementary role to computerized tomography in the diagnostic workup, Although computerized tomography provides excellent Bony resolution for showing the anatomy, magnetic resonance imaging provides specificity in characterizing soft-tissue abnormalities shown on computerized tomography,How ever standard magnetic resonance imaging frequently fails to allow differentiation of cholesteatoma from other soft tissues or mucoid secretions, particularly in patients who had ear surgery.
Recent studies of diffusion weighted magnetic resonance imaging show that it is sensitive to cholesteatoma tissue.Recent studies highlights the ability of diffusion weighted magnetic resonance imaging in differentiating cholesteatoma from granulation tissue in patients who have undergone mastoidectomy and also these imaging modalities help in the diagnosis of residual cholesteatoma. Diffusion weighted magnetic resonance imaging play an important role in diagnosis of retraction pockets .
Diffusion weighted magnetic resonance imaging is based on the principle of random microscopic motion (Brownian motion) of water molecules.This "diffusion" of water molecules differs in each biological tissue, For example water molecules in cholesteatoma are less mobile giving rise to a hyper-intense signal, while in other tissues as granulation tissues, water molecules are more mobile thus appear less intense on diffusion weighted magnetic resonance imaging sequence.
- Conditions
- Cholesteatoma
- Being tested
- Diffusion magnetic resonance imaging
- Medical subject headings
- Cholesteatoma
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Diffusion magnetic resonance imagingRadiation
Patients with suspected cholesteatoma will have diffusion magnetic resonance imaging
What is being measured
The primary outcome is the main question the study is designed to answer.
Detection of Cholesteatoma Using Diffusion Magnetic Resonance Imaging
To detect the ability of Diffusion Magnetic Resonance Imaging in detection of cholesteatoma as compared by post operative data
Measured: with in one year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted10 Oct 2017
- Study startNov 2017 (estimated)
- Primary completionDec 2018 (estimated)
- Study completionFeb 2019 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (10)Papers the sponsor has linked to this study.
- Other trials for CholesteatomaStudies of the same condition, open and under way.
- More trials run by Assiut UniversityThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case only
- Time perspective
- Prospective
- Enrolment
- 30 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Assiut University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Amer Ragab Ahmed, Assiut University
- Investigators
- amer ragab, resident, Principal investigator, Assiut University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03305796
- Sponsor's protocol ID
- Cholesteatoma
- Status last verified
- Oct 2017
- First submitted
- 5 Oct 2017
- Last updated
- 10 Oct 2017
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Alexander AE Jr, Caldemeyer KS, Rigby P. Clinical and surgical application of reformatted high-resolution CT of the temporal bone. Neuroimaging Clin N Am. 1998 Aug;8(3):631-50.
PubMed 9673317Nevoux J, Lenoir M, Roger G, Denoyelle F, Ducou Le Pointe H, Garabedian EN. Childhood cholesteatoma. Eur Ann Otorhinolaryngol Head Neck Dis. 2010 Sep;127(4):143-50. doi: 10.1016/j.anorl.2010.07.001. Epub 2010 Aug 11.
PubMed 20860924Thomassin JM, Braccini F. [Role of imaging and endoscopy in the follow up and management of cholesteatomas operated by closed technique]. Rev Laryngol Otol Rhinol (Bord). 1999;120(2):75-81. French.
PubMed 10444978Blaney SP, Tierney P, Oyarazabal M, Bowdler DA. CT scanning in "second look" combined approach tympanoplasty. Rev Laryngol Otol Rhinol (Bord). 2000;121(2):79-81.
PubMed 10997063Vanden Abeele D, Coen E, Parizel PM, Van de Heyning P. Can MRI replace a second look operation in cholesteatoma surgery? Acta Otolaryngol. 1999;119(5):555-61. doi: 10.1080/00016489950180784.
PubMed 10478595Kimitsuki T, Suda Y, Kawano H, Tono T, Komune S. Correlation between MRI findings and second-Look operation in cholesteatoma surgery. ORL J Otorhinolaryngol Relat Spec. 2001 Sep-Oct;63(5):291-3. doi: 10.1159/000055760.
PubMed 11528272Bergui M, Zhong J, Bradac GB, Sales S. Diffusion-weighted images of intracranial cyst-like lesions. Neuroradiology. 2001 Oct;43(10):824-9. doi: 10.1007/s002340100595.
PubMed 11688697Alzahrani M, Saliba I. Tympanic membrane retraction pocket staging: is it worthwhile? Eur Arch Otorhinolaryngol. 2014 Jun;271(6):1361-8. doi: 10.1007/s00405-013-2644-4. Epub 2013 Jul 27.
PubMed 23892691Bammer R. Basic principles of diffusion-weighted imaging. Eur J Radiol. 2003 Mar;45(3):169-84. doi: 10.1016/s0720-048x(02)00303-0.
PubMed 12595101De Foer B, Vercruysse JP, Bernaerts A, Maes J, Deckers F, Michiels J, Somers T, Pouillon M, Offeciers E, Casselman JW. The value of single-shot turbo spin-echo diffusion-weighted MR imaging in the detection of middle ear cholesteatoma. Neuroradiology. 2007 Oct;49(10):841-8. doi: 10.1007/s00234-007-0268-3. Epub 2007 Sep 3.
PubMed 17768611
Study at a glance
From the registry record, last updated by the sponsor on 10 Oct 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Detection of Cholesteatoma Using Diffusion Magnetic Resonance Imaging
- ClinicalTrials.gov ID
- NCT03305796
- Acronym / sponsor ID
- Cholesteatoma
- Conditions
- Cholesteatoma
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 30 participants (estimated)
- Lead sponsor
- Assiut UniversityUniversity, hospital or other
- Study start
- Nov 2017 (estimated)
- Primary completion
- Dec 2018 (estimated)
- Study completion
- Feb 2019 (estimated)
- First posted
- 10 Oct 2017 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Cholesteatoma is a retraction pocket lined with squamous epithelium lined with keratin debris occurring within pneumatized spaces of the temporal bone. Cholesteatomas have a propensity for growth, bone destruction, and chronic infection.High-resolution computerized tomography is the method of choice for imaging the middle ear .
Detailed description
In patients with recurrent cholesteatoma, computerized tomography can show the extent of cholesteatoma in relation to the ossicles and mastoid process,but computerized tomography has a high negative predictive value if neither a soft-tissue mass nor bony destructions are shown.However, if a soft-tissue mass in the middle ear is seen on computerized tomography, diagnosis of the mass is not possible because cholesteatoma, mucoid secretion, granulation tissue and cholesterol granuloma can not be differentiated from one another on computerized tomography.
Standard magnetic resonance imaging shows tissues better than computerized tomography,Therefore in patients with cholesteatoma, magnetic resonance imaging plays a complementary role to computerized tomography in the diagnostic workup, Although computerized tomography provides excellent Bony resolution for showing the anatomy, magnetic resonance imaging provides specificity in characterizing soft-tissue abnormalities shown on computerized tomography,How ever standard magnetic resonance imaging frequently fails to allow differentiation of cholesteatoma from other soft tissues or mucoid secretions, particularly in patients who had ear surgery.
Recent studies of diffusion weighted magnetic resonance imaging show that it is sensitive to cholesteatoma tissue.Recent studies highlights the ability of diffusion weighted magnetic resonance imaging in differentiating cholesteatoma from granulation tissue in patients who have undergone mastoidectomy and also these imaging modalities help in the diagnosis of residual cholesteatoma. Diffusion weighted magnetic resonance imaging play an important role in diagnosis of retraction pockets .
Diffusion weighted magnetic resonance imaging is based on the principle of random microscopic motion (Brownian motion) of water molecules.This "diffusion" of water molecules differs in each biological tissue, For example water molecules in cholesteatoma are less mobile giving rise to a hyper-intense signal, while in other tissues as granulation tissues, water molecules are more mobile thus appear less intense on diffusion weighted magnetic resonance imaging sequence.
Study design
- Observational model
- Case only
- Time perspective
- Prospective
Who may qualify
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
- Study population
- All patients presented with suspected cholesteatoma in assiut university hospital
Key inclusion criteria (1 listed)
- • all patients presented with suspected primary cholesteatoma ,high risk retraction pockets ,Suspected recurrent or residual cholesteatoma after surgery .
Key exclusion criteria (1 listed)
- Contraindication to magnetic resonance imaging (e.g., pacemaker, metallic implant,cochlear implant Or claustrophobia).
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Diffusion magnetic resonance imagingPatients with suspected cholesteatoma will have diffusion magnetic resonance imaging | Radiation | – |
Primary outcome
Detection of Cholesteatoma Using Diffusion Magnetic Resonance Imaging
Time frame: with in one year
To detect the ability of Diffusion Magnetic Resonance Imaging in detection of cholesteatoma as compared by post operative data
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 10 Oct 2017.
- Background: PubMed 9673317Alexander AE Jr, Caldemeyer KS, Rigby P. Clinical and surgical application of reformatted high-resolution CT of the temporal bone. Neuroimaging Clin N Am. 1998 Aug;8(3):631-50.
- Background: PubMed 20860924Nevoux J, Lenoir M, Roger G, Denoyelle F, Ducou Le Pointe H, Garabedian EN. Childhood cholesteatoma. Eur Ann Otorhinolaryngol Head Neck Dis. 2010 Sep;127(4):143-50. doi: 10.1016/j.anorl.2010.07.001. Epub 2010 Aug 11.
- Background: PubMed 10444978Thomassin JM, Braccini F. [Role of imaging and endoscopy in the follow up and management of cholesteatomas operated by closed technique]. Rev Laryngol Otol Rhinol (Bord). 1999;120(2):75-81. French.
- Background: PubMed 10997063Blaney SP, Tierney P, Oyarazabal M, Bowdler DA. CT scanning in "second look" combined approach tympanoplasty. Rev Laryngol Otol Rhinol (Bord). 2000;121(2):79-81.
- Background: PubMed 10478595Vanden Abeele D, Coen E, Parizel PM, Van de Heyning P. Can MRI replace a second look operation in cholesteatoma surgery? Acta Otolaryngol. 1999;119(5):555-61. doi: 10.1080/00016489950180784.
- Background: PubMed 11528272Kimitsuki T, Suda Y, Kawano H, Tono T, Komune S. Correlation between MRI findings and second-Look operation in cholesteatoma surgery. ORL J Otorhinolaryngol Relat Spec. 2001 Sep-Oct;63(5):291-3. doi: 10.1159/000055760.
- Background: PubMed 11688697Bergui M, Zhong J, Bradac GB, Sales S. Diffusion-weighted images of intracranial cyst-like lesions. Neuroradiology. 2001 Oct;43(10):824-9. doi: 10.1007/s002340100595.
- Background: PubMed 23892691Alzahrani M, Saliba I. Tympanic membrane retraction pocket staging: is it worthwhile? Eur Arch Otorhinolaryngol. 2014 Jun;271(6):1361-8. doi: 10.1007/s00405-013-2644-4. Epub 2013 Jul 27.
- Background: PubMed 12595101Bammer R. Basic principles of diffusion-weighted imaging. Eur J Radiol. 2003 Mar;45(3):169-84. doi: 10.1016/s0720-048x(02)00303-0.
- Background: PubMed 17768611De Foer B, Vercruysse JP, Bernaerts A, Maes J, Deckers F, Michiels J, Somers T, Pouillon M, Offeciers E, Casselman JW. The value of single-shot turbo spin-echo diffusion-weighted MR imaging in the detection of middle ear cholesteatoma. Neuroradiology. 2007 Oct;49(10):841-8. doi: 10.1007/s00234-007-0268-3. Epub 2007 Sep 3.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
amer ragab, resident principal investigator
Assiut University
Questions about this trial
What is this clinical trial studying?
An observational study of Cholesteatoma, run by Assiut University.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 10 Oct 2017. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact ahmed Abdel-Aleem, professor (01222892745, abduleen@aun.edu.eg), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Detection of Cholesteatoma Using Diffusion Magnetic Resonance Imaging (time frame: with in one year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT03305796, which also lists 10 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 10 Oct 2017.