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Intraoperative Assessment of Resection Margins in Oral Cavity Cancer: This is the Way
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External histopathological validation of the surface-intermediate-base margin score.

Alessandro Antonelli1, Maria Furlan1, Mario Sodano1

  • 1Department of Urology, Spedali Civili Hospital, University of Brescia, Brescia, Italy.

Urologic Oncology
|January 23, 2017
PubMed
Summary
This summary is machine-generated.

The Surface, Intermediate, and Basis (SIB) system visually assesses kidney tumor resection thickness. This system correlates with microscopic measurements and helps standardize partial nephrectomy techniques.

Keywords:
Kidney neoplasmNephron-sparing surgeryPartial nephrectomyRenal cell carcinoma

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Area of Science:

  • Urology
  • Surgical Oncology
  • Pathology

Background:

  • Partial nephrectomy (PN) involves resecting kidney tumors while preserving healthy parenchyma.
  • Standardizing the description of resection techniques (RT) in PN is crucial for consistent surgical practice.
  • The Surface, Intermediate, and Basis (SIB) system was developed for visual assessment of parenchyma thickness during PN.

Purpose of the Study:

  • To evaluate the correlation between the visually assigned Surface, Intermediate, and Basis (SIB) score and the microscopic thickness of remaining parenchyma.
  • To determine if the SIB system can standardize nomenclature for partial nephrectomy resection techniques.

Main Methods:

  • Prospective data collection from 52 patients undergoing PN.
  • Application of the SIB system by trained examiners to assess parenchyma thickness in three sectors (surface, intermediate, basis) of the intrarenal tumor portion.
  • Microscopic measurement of parenchyma thickness at the score-specific areas (SSAs) by blinded pathologists.
  • Assessment of the relationship between SIB scores and measured parenchyma thickness.

Main Results:

  • The SIB system was used to classify RTs: enucleation (60%), enucleoresection (31%), and wedge resection (9%).
  • Statistically significant differences in parenchyma thickness were observed between different SIB scores (S=0 vs. S=1, and S=0 vs. S=1 vs. S=2).
  • Median/mean parenchyma thickness varied significantly across SIB scores, confirming visual-parenchymal correlation.

Conclusions:

  • The visual assessment using the SIB system is significantly related to the microscopic thickness of healthy parenchyma during PN.
  • The SIB system demonstrates the ability to differentiate between various RTs.
  • The SIB system holds potential as a valuable tool for standardizing the nomenclature of partial nephrectomy procedures.