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The histology of intraoperative biopsies of small renal masses treated with laparoscopic cryoablation

Tijdschrift voor Urologie, ISSN: 2211-3037, Vol: 2, Issue: 4, Page: 92-97
2012
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Article Description

Introduction: We evaluated histological outcome of an intraoperative biopsy protocol for small renal masses and compared it with literature. Patients and methods: The histology of biopsies from renal masses treated laparoscopic cryoablation (LCA), from 2007-2010, was retrospectively analyzed. A minimum of three biopsies was taken. A 1998-2009 literature search identified a series of LCA reporting histological results and compared to the data of this study. Results: All 61 biopsied masses were histologically classified and revealed 49 malignant and 12 benign lesions. The inter-observer agreement for the subtype and nuclear grade was 93% and 35% respectively. The diagnosis and malignancy rates were higher compared to the rates found literature. Conclusion: The use of an intraoperative biopsy protocol provided diagnosis of all biopsied renal masses and avoided unnecessary nondiagnostic examines. Lesions ≥ 3 cm were more often malignant compared to smaller masses.

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