A proposed inclusion of magnetic resonance imaging features to the VI RADS to enhance its accuracy in predicting muscle invasion

Abstract Background Muscle invasion in bladder cancer is a paramount factor in prognosis and setting the management plan. MRI is gaining preference in this field, being noninvasive with no radiation hazards and having good resolution, especially with the development of the standardized system of (VI...

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Main Authors: Nesma Elshewy, Adel Ali Ramadan, Wael Mohamed Sameh, Mohamed Emad-ElDeen Eid, Samar El Achy, Omnia Ezz Eldin
Format: Article
Language:English
Published: SpringerOpen 2024-01-01
Series:The Egyptian Journal of Radiology and Nuclear Medicine
Subjects:
Online Access:https://doi.org/10.1186/s43055-023-01181-z
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author Nesma Elshewy
Adel Ali Ramadan
Wael Mohamed Sameh
Mohamed Emad-ElDeen Eid
Samar El Achy
Omnia Ezz Eldin
author_facet Nesma Elshewy
Adel Ali Ramadan
Wael Mohamed Sameh
Mohamed Emad-ElDeen Eid
Samar El Achy
Omnia Ezz Eldin
author_sort Nesma Elshewy
collection DOAJ
description Abstract Background Muscle invasion in bladder cancer is a paramount factor in prognosis and setting the management plan. MRI is gaining preference in this field, being noninvasive with no radiation hazards and having good resolution, especially with the development of the standardized system of (VI RADS). Moreover, multiple other imaging features can aid in predicting muscle invasion. We studied some of the most commonly reported features to develop the most reliable combination to anticipate the presence of muscle invasion. Results Our prospective study on 80 patients showed 39 (48.75%) muscle invasive (MIBC) and 41 (51.25%) non-muscle invasive (NMIBC) bladder cancer cases. The inter-observer agreement on the VI RADS score and the ADC measurements were very good and they had high-accuracy predicting muscle invasion with areas under the curve (AUCs) on ROC curve analysis reaching 0.905 and 0.857, respectively. The imaging variables that showed statistically significant differences between NMIBC and MIBC cases were: the multiplicity of the lesions, vesicoureteric junction (VUJ) involvement with distal ureteric backpressure, tumor–wall contact length (TCL), tumor volume, tumor shape (sessile or papillary), presence of a stalk, the final VI RADS score and the ADC value. On the multiple regression analysis model, the multiplicity of the lesions, the minimum ADC value by ROI method and the final VI RADS score showed independent correlation with muscle invasion, negatively with the first two and positively with the latter. The combination of the six statistically significant variables on the univariate regression analysis (final VI RADS score, minimum ADC by ROI, multiplicity, index tumor shape, TCL and distal ureteric backpressure changes) showed the best AUC (0.944). Conclusions VI RADS has good diagnostic accuracy regarding muscle invasion; however, this can even be enhanced by including other quantitative and qualitative commonly reported MRI features as a proposed modification to the VI RADS.
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spelling doaj.art-d1680d70fa9044b2afe55dd75bd8a2952024-03-05T16:23:50ZengSpringerOpenThe Egyptian Journal of Radiology and Nuclear Medicine2090-47622024-01-0155111210.1186/s43055-023-01181-zA proposed inclusion of magnetic resonance imaging features to the VI RADS to enhance its accuracy in predicting muscle invasionNesma Elshewy0Adel Ali Ramadan1Wael Mohamed Sameh2Mohamed Emad-ElDeen Eid3Samar El Achy4Omnia Ezz Eldin5Diagnostic and Interventional Radiology Department, Alexandria Faculty of MedicineDiagnostic and Interventional Radiology Department, Alexandria Faculty of MedicineUrology Department, Alexandria Faculty of MedicineDiagnostic and Interventional Radiology Department, Alexandria Faculty of MedicinePathology Department, Alexandria Faculty of MedicineDiagnostic and Interventional Radiology Department, Alexandria Faculty of MedicineAbstract Background Muscle invasion in bladder cancer is a paramount factor in prognosis and setting the management plan. MRI is gaining preference in this field, being noninvasive with no radiation hazards and having good resolution, especially with the development of the standardized system of (VI RADS). Moreover, multiple other imaging features can aid in predicting muscle invasion. We studied some of the most commonly reported features to develop the most reliable combination to anticipate the presence of muscle invasion. Results Our prospective study on 80 patients showed 39 (48.75%) muscle invasive (MIBC) and 41 (51.25%) non-muscle invasive (NMIBC) bladder cancer cases. The inter-observer agreement on the VI RADS score and the ADC measurements were very good and they had high-accuracy predicting muscle invasion with areas under the curve (AUCs) on ROC curve analysis reaching 0.905 and 0.857, respectively. The imaging variables that showed statistically significant differences between NMIBC and MIBC cases were: the multiplicity of the lesions, vesicoureteric junction (VUJ) involvement with distal ureteric backpressure, tumor–wall contact length (TCL), tumor volume, tumor shape (sessile or papillary), presence of a stalk, the final VI RADS score and the ADC value. On the multiple regression analysis model, the multiplicity of the lesions, the minimum ADC value by ROI method and the final VI RADS score showed independent correlation with muscle invasion, negatively with the first two and positively with the latter. The combination of the six statistically significant variables on the univariate regression analysis (final VI RADS score, minimum ADC by ROI, multiplicity, index tumor shape, TCL and distal ureteric backpressure changes) showed the best AUC (0.944). Conclusions VI RADS has good diagnostic accuracy regarding muscle invasion; however, this can even be enhanced by including other quantitative and qualitative commonly reported MRI features as a proposed modification to the VI RADS.https://doi.org/10.1186/s43055-023-01181-zBladder cancerMuscle invasionVI RADSMRI features
spellingShingle Nesma Elshewy
Adel Ali Ramadan
Wael Mohamed Sameh
Mohamed Emad-ElDeen Eid
Samar El Achy
Omnia Ezz Eldin
A proposed inclusion of magnetic resonance imaging features to the VI RADS to enhance its accuracy in predicting muscle invasion
The Egyptian Journal of Radiology and Nuclear Medicine
Bladder cancer
Muscle invasion
VI RADS
MRI features
title A proposed inclusion of magnetic resonance imaging features to the VI RADS to enhance its accuracy in predicting muscle invasion
title_full A proposed inclusion of magnetic resonance imaging features to the VI RADS to enhance its accuracy in predicting muscle invasion
title_fullStr A proposed inclusion of magnetic resonance imaging features to the VI RADS to enhance its accuracy in predicting muscle invasion
title_full_unstemmed A proposed inclusion of magnetic resonance imaging features to the VI RADS to enhance its accuracy in predicting muscle invasion
title_short A proposed inclusion of magnetic resonance imaging features to the VI RADS to enhance its accuracy in predicting muscle invasion
title_sort proposed inclusion of magnetic resonance imaging features to the vi rads to enhance its accuracy in predicting muscle invasion
topic Bladder cancer
Muscle invasion
VI RADS
MRI features
url https://doi.org/10.1186/s43055-023-01181-z
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