Effect of Bladder Carcinoma Location on Detection Rates by Ultrasonography and Computed Tomography

Özden, Eriz; Turgut, Ahmet Tuncay; Türkölmez, Kadír; Reşorlu, Berkan; Şafak, Mut

doi:10.1016/j.urology.2007.01.077

Cited by 31 publications

(27 citation statements)

References 15 publications

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“…However, technical and scientific advances in radiology have increased the diagnostic accuracy of ultrasound in evaluation of bladder tumours. Studies have reported an increase in detection rate of ultrasound for bladder cancers from 82% to 95% (AbuYousef et al, 1984;Ozden et al, 2007). The high sensitivity, specificity and predictive values of ultrasound in the diagnosis of the bladder tumours emphasizes that the technique can be used for diagnosis of bladder tumours in our settings.…”

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

“…Smaller lesions (< 0.5 cm) and lesions located in the dome or bladder neck are more difficult to visualize using an ultrasound. Tumour configuration is also an important factor; flat lesions are almost certainly harder to detect than polypoid ones (Ozden et al, 2007). Other factors include obesity, degree of bladder distention and also the experience and skills of the performer (Abu-Yousef et al, 1984).…”

Section: Discussionmentioning

confidence: 99%

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The effectiveness of ultrasound in the diagnosis of bladder tumours at the Muhimbili National Hospital, Dar es Salaam, Tanzania

Mwashambwa

Yongolo

2011

Tanzania J Hlth Res

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Abstract:The importance of an ultrasound in diagnosis of bladder tumours has been investigated by different authors. Some have questioned its effectiveness while others have considered the technique to be an important tool in the initial evaluation of bladder tumours. This study was carried out to establish the effectiveness of the ultrasound in diagnosis of bladder tumours at the Muhimbili National Hospital in Dar es Salaam, Tanzania. Clinical indications and ultrasound findings were recorded. Cystoscopy was done and findings recorded on a preformed questionnaire. The ultrasound findings were compared to cystoscopy findings and the sensitivity, negativity, positive predictive value and negative predictive value determined. A total of 110 patients were recruited in this study and the male to female ratio was 2:1. The commonest (37%) age group was 41-60 years. The most common clinical indication overall was haematuria in 37% of all cases. In males, bladder outlet obstruction due to stricture was the commonest indication (31%). Out of 110 patients scheduled for cystoscopy, 71 had ultrasound done preoperatively. In these patients 70% had some form of abnormal ultrasound findings. The sensitivity, specificity, positive predictive value, and the negative predictive value (NPV) of ultrasound in detection of bladder tumour were 83%, 93%, 89% and 89%, respectively. In conclusion, ultrasound is an effective method for evaluating patients presenting with haematuria or suspected to have bladder tumours. It is cheap, available, affordable and non-invasive; has a high sensitivity, and therefore it can also be useful in the follow-up of patient with bladder cancer. ________________________________________________________________________________

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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The effectiveness of ultrasound in the diagnosis of bladder tumours at the Muhimbili National Hospital, Dar es Salaam, Tanzania

Mwashambwa

Yongolo

2011

Tanzania J Hlth Res

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“…In the literature, there is no agreement regarding the most difficult places to detect bladder cancers using ultrasound. Those suggested include the anterior and posterior bladder wall [3], the bladder neck or dome areas [20] and the anterior wall [27]. Detection of small tumours in the bladder floor can be a challenge in male patients with benign prostatic hyperplasia (BPH) [28][29][30].…”

Section: Discussionmentioning

confidence: 99%

Accuracy of contrast-enhanced ultrasound in the detection of bladder cancer

Nicolau¹,

Buñesch²,

Peri³

et al. 2011

BJR

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Objective: To assess the accuracy contrast-enhanced ultrasound (CEUS) in bladder cancer detection using transurethral biopsy in conventional cystoscopy as the reference standard and to determine whether CEUS improves the bladder cancer detection rate of baseline ultrasound. Methods: 43 patients with suspected bladder cancer underwent conventional cystoscopy with transurethral biopsy of the suspicious lesions. 64 bladder cancers were confirmed in 33 out of 43 patients. Baseline ultrasound and CEUS were performed the day before surgery and the accuracy of both techniques for bladder cancer detection and number of detected tumours were analysed and compared with the final diagnosis. Results: CEUS was significantly more accurate than ultrasound in determining presence or absence of bladder cancer: 88.37% vs 72.09%. Seven of eight uncertain baseline ultrasound results were correctly diagnosed using CEUS. CEUS sensitivity was also better than that of baseline ultrasound per number of tumours: 65.62% vs 60.93%. CEUS sensitivity for bladder cancer detection was very high for tumours larger than 5 mm (94.7%) but very low for tumours ,5 mm (20%) and also had a very low negative predictive value (28.57%) in tumours ,5 mm. Conclusion: CEUS provided higher accuracy than baseline ultrasound for bladder cancer detection, being especially useful in non-conclusive baseline ultrasound studies.

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“…It is a very sensitive modality for tumors greater than 0.5 cm with almost 100% detection rate independent of their location [8]. The predictive value of an ultrasonic finding for tumor grade, however, was not addressed in the literature.…”

Section: Discussionmentioning

confidence: 99%

Predicting the Risk of High-Grade Bladder Cancer Using Noninvasive Data

et al. 2011

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Aim: To examine the hypothesis that the risk of high-grade bladder cancer can be predicted using noninvasively obtained data. Patients and Methods: We retrospectively analyzed the database of 431 patients that had transurethral resection of first-time bladder tumors between June 1998 and December 2009. Pre-operative parameters evaluated were: patients’ age; gender; sonographic tumor diameter, number and location of tumor inside the bladder; presence of hydronephrosis, and results of urinary cytology. Parameters that showed significance in multivariate analysis were incorporated into the nomogram. Results: Multivariate analysis of the data showed that patient’s age, the presence of hydronephrosis, sonographic tumor diameter (risk of a high-grade tumor: 14, 29, 43.3, 55.7 and 69.4% at diameters: 0.5–1.5, 1.6–2, 2.1–2.5, 2.6–3 and >3 cm, respectively), location of tumor in the bladder (risk of high-grade tumor: 28.8, 47, 67.5 and 90.5% in the lateral walls, posterior/base, anterior and dome, respectively), and urinary cytology were all highly significant and independent predictors of high-grade tumors. A nomogram constructed using these variables scored an area of 0.853 in the ROC curve. Conclusions: The risk of high-grade bladder tumor can be accurately predicted using non-invasively obtained information. This prediction can help to triage patients with newly detected bladder cancer for biopsy.

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Effect of Bladder Carcinoma Location on Detection Rates by Ultrasonography and Computed Tomography

Cited by 31 publications

References 15 publications

The effectiveness of ultrasound in the diagnosis of bladder tumours at the Muhimbili National Hospital, Dar es Salaam, Tanzania

The effectiveness of ultrasound in the diagnosis of bladder tumours at the Muhimbili National Hospital, Dar es Salaam, Tanzania

Accuracy of contrast-enhanced ultrasound in the detection of bladder cancer

Predicting the Risk of High-Grade Bladder Cancer Using Noninvasive Data

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