SynthesisDer Urologe. Ausg. A2019
[Biopsy techniques in the upper urinary tract for the diagnosis of urothelial carcinoma: systematic review].
Synthesis in Der Urologe. Ausg. A, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundThe diagnostic accuracy of ureteroscopic biopsies in the upper urinary tract is limited by technical difficulties during extraction and small sample size.
objectivesTo evaluate the impact of different techniques and instruments on the histopathologic quality and diagnostic yield of extracted samples as well as the predictive value of clinical grading and staging on final pathologic stage at radical nephroureterectomy. MATERIALS AND
methodsFor this systematic review, we searched PubMed and Embase databases for original publications and meeting abstracts according to the PRISMA guidelines.
resultsOverall, we included 23 studies which comprised a total of 1547 biopsies for the investigation of diagnostic yield and 778 patients for the assessment of grade and stage concordance. We found that the median diagnostic yields of big retrograde 2F [french] forceps, antegrade 3F forceps and baskets in combination with forceps were 92% (range 83-100), 72% (50-90) and 91% (78-94), respectively. Median rates of grade concordance and upgrading across all techniques ranged between 78-89% and 5-16%, respectively, without relevant differences.
conclusionsThe choice of biopsy technique affects the ability to diagnose upper tract urothelial carcinoma. The correct determination of pathologic grading is comparable between different techniques. The combination of biopsy forceps and baskets during ureterorenoscopy seems to achieve optimal diagnostic accuracy.
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