Abstract
Purpose
HistoScanning™ (HS) is an ultrasound-based tissue characterization technique with encouraging results in the detection of prostate cancer (PCa). The aim of this study was to evaluate the accuracy of total tumor volume measured by HS (TVHS) in patients with PCa.
Methods
In 148 patients with proven PCa, TVHS was measured prior to radical prostatectomy and compared with the total tumor volume in the final pathological report (TVP) using the rank-based spearman correlation test. Correlation was performed after stratification of the results by d’Amico risk categories, prostate volume, experience of HS examiner, distance of the ultrasound probe to the prostate (≤3.5 and >3.5 mm) and quality of initial HS. In addition, a re-analysis of HS data was performed by a single examiner and the TVHS from the unmodified HS data was acquired.
Results
TVP was approximately twofold higher compared to TVHS. Overall, there was no significant correlation (r s = −0.0083, p = 0.9) for the TVP and the TVHS. After adjusting for d’Amico risk categories, prostate volume, experience of examiner, distance of the ultrasound probe to the prostate and quality of initial HS, no significant correlation was found. After re-analyzing of all HS data by 1 examiner, the correlation remained not significant (r s = 0.039, p = 0.6).
Conclusions
TVHS and TVP did not correlate in this cohort of patients. We cannot recommend the use of HS at least for imaging of the total tumor volume at this time. The controversial findings for prostate HS should initiate more studies to clarify these discrepancies.
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Abbreviations
- HS:
-
HistoScanning™
- PCa:
-
Prostate cancer
- TVHS:
-
Total tumor volume measured by HistoScanning™
- TVP:
-
Total tumor volume measured by pathology
- RP:
-
Radical prostatectomy
- PV:
-
Prostate volume
- TRUS:
-
Transrectal ultrasound
- r s :
-
Rank-based spearman correlation coefficient
- PPV:
-
Positive predictive value
- NPV:
-
Negative predictive value
- ciPCa:
-
Clinically insignificant prostate cancer
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J. Schiffmann and J. Fischer have contributed equally to this manuscript.
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Schiffmann, J., Fischer, J., Tennstedt, P. et al. Comparison of prostate cancer volume measured by HistoScanning™ and final histopathological results. World J Urol 32, 939–944 (2014). https://doi.org/10.1007/s00345-013-1211-3
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DOI: https://doi.org/10.1007/s00345-013-1211-3