Urinary bladder MR imaging. Part II. Neoplasm.

Fisher, Madeleine R.; Hricak, Hedvig; Tanagho, Emil A.

doi:10.1148/radiology.157.2.4048458

Cited by 106 publications

(36 citation statements)

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“…Also, TUUS has limitations in differentiating tumour stages because acoustic shadows are produced by tumour surface calci®cation or ultrasound is absorbed by large tumours. Conventional MRI is ineffective for bladder tumour staging, being unable to separate not only T1 from T2a, but also T2a from T2b [1,16]. Pavone et al [17] compared the clinical staging accuracy of these three imaging methods and concluded that TUUS was better than the other two methods for local staging.…”

Section: Discussionmentioning

confidence: 99%

A new staging criterion for bladder carcinoma using gadolinium‐enhanced magnetic resonance imaging with an endorectal surface coil: a comparison with ultrasonography

Hayashi¹,

Tochigi

Shiraishi³

et al. 2000

BJU International

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Objective To evaluate the accuracy of a new staging criterion, submucosal linear enhancement (SLE) on gadolinium-diethylenetriamine-pentaacetic acidenhanced T1-weighted magnetic resonance imaging (MRI) using an endorectal surface coil (endorectal enhanced MRI), and to compare the accuracy of this method with that of transurethral ultrasonography (TUUS). Patients and methods The study included 71 patients with bladder tumours (63 men and eight women, mean age 65.5 years, range 31±85). The SLE coincided with abundant submucosal vascular beds, as reported in a previous study. When the SLE beneath the tumour maintained continuity, the tumour was diagnosed as super®cial (fT1), but if the SLE was interrupted by the tumour, the disease was considered invasive (oT2a). Super®cial muscle invasion (less than half the muscle layer) and deep muscle invasion (more than half the muscle layer) were classi®ed as T2a and T2b, respectively. When the tumour formed an extravesical mass, the tumour was classi®ed as T3b. Results The staging accuracy for bladder tumours using SLE on endorectal-enhanced MRI or TUUS was 83% and 60%, respectively (P<0.01). Using the SLE, muscle invasion of bladder tumour was diagnosed with an accuracy of 87%, a sensitivity of 91% and a speci®city of 87%; this was signi®cantly better than with TUUS (P<0.01). Conclusion The criterion of SLE on Gd-DTPA enhanced T1-weighted MRI using an endorectal surface coil is useful for staging bladder tumour, and the staging accuracy is signi®cantly better than with TUUS.

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Section: Discussionmentioning

confidence: 99%

A new staging criterion for bladder carcinoma using gadolinium‐enhanced magnetic resonance imaging with an endorectal surface coil: a comparison with ultrasonography

Hayashi¹,

Tochigi

Shiraishi³

et al. 2000

BJU International

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“…However, these studies were performed with low field-strength scanners (0.5 Tesla) and contained a small sample size [22,24,28]. In addition, Buy et al reported a staging accuracy of 60% for non-enhanced MR images [23], and in this study under-staging (at a rate of 33%) was the most common error.…”

Section: Initial Results For Bladder Tumor Stagingmentioning

confidence: 68%

“…In addition, a lesion extending into the perivesical fat (T3) or the adjacent organs (T4) is also diagnosed as MIBC [22][23][24].…”

Section: Staging Criteria On Mrmentioning

confidence: 99%

Urinary Bladder Cancer: The Current and Potential Role of MR Imaging in Non-Distant Metastatic Lesions

Wang¹,

Guo²,

Zhou³

et al. 2013

JCT

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Urinary bladder cancer is the second most common genitourinary malignancy in Westernized countries. A number of emerging imaging techniques have recently been reported in the literature for use in imaging bladder cancer. While the explicit application of MR imaging in bladder cancer especially in non-distant bladder cancer or bladder cancer localized in pelvic remains uncertain and awaits a thorough evaluation. Therefore, this article aims to make a systematic review of previous literature and provide a complete assessment of the value of MR as an evolving imaging tool in localized urinary bladder cancer application. Studies were conducted by searching the MEDLINE and PubMed databases up to 2012 using both medical subject heading (Mesh) and a free text method like "urinary bladder cancer", "magnetic resonance imaging" or "MRI", "diffusion weighted imaging" or "DWI". About 53 articles were selected and analyzed which were considered to be associated with the objective of this systematic review ( Table 1). Results showed that MRI especially the newer functional imaging technique like DWI may has a great potential role in localized bladder cancer like early detection, staging, evaluation of tumor aggressiveness and therapeutic responsiveness of patients in the assessment of urinary bladder cancer and so forth. Newer MRI has already proceeded promising results in bladder cancer application; and the explicit role of newer MRI in bladder cancer patients still needs further research and awaits to be thoroughly evaluated.

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“…[11][12][13][14] A lesion at the base of the tumor with intact muscle layer of low SI was considered stage T1 or lower and with focally disrupted muscle layer of low SI without perivesical infiltration, stage T2. A lesion extending into the perivesical fat was considered T3 and extending into adjacent organs, T4.…”

Section: T Staging On T 2 Wimentioning

confidence: 99%

Preoperative T Staging of Urinary Bladder Cancer: Efficacy of Stalk Detection and Diagnostic Performance of Diffusion-weighted Imaging at 3T

Ohgiya

Suyama

et al. 2014

MRMS

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Purpose: We evaluated the ability of diffusion-weighted imaging (DWI) at 3 tesla for diagnosing T stage and detecting stalks in bladder cancer.Methods: In total, 39 consecutive patients with bladder tumors underwent magnetic resonance (MR) imaging that included T 2 -weighted imaging (T 2 WI) and DWI using a 3T MR scanner. Two radiologists interpreted T 2 WI plus DWI and T 2 WI for diagnosis of T stage and for detection of stalks. We used McNemar's test to examine differences in diagnostic performance and Fisher's exact test to evaluate differences in stalk detection frequency.Results: Specificity and accuracy in differentiating T1 tumors from T2 to T4 tumors were significantly better with T 2 WI plus DWI (83% [20/24] Conclusion: DWI at 3T was superior to T 2 WI for evaluating the T stage of bladder cancer, particularly in differentiating T1 tumors from those T2 or higher, and in detecting stalks of papillary bladder tumors.

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Urinary bladder MR imaging. Part II. Neoplasm.

Cited by 106 publications

References 0 publications

A new staging criterion for bladder carcinoma using gadolinium‐enhanced magnetic resonance imaging with an endorectal surface coil: a comparison with ultrasonography

A new staging criterion for bladder carcinoma using gadolinium‐enhanced magnetic resonance imaging with an endorectal surface coil: a comparison with ultrasonography

Urinary Bladder Cancer: The Current and Potential Role of MR Imaging in Non-Distant Metastatic Lesions

Preoperative T Staging of Urinary Bladder Cancer: Efficacy of Stalk Detection and Diagnostic Performance of Diffusion-weighted Imaging at 3T

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