Quantitative transrectal shear wave elastography undergoing salvage extraperitoneal laparoscopic radical prostatectomy following failed radiotherapy

Cheng Wei, Magdalena Szewczyk-Bieda, Paddy Niblock, Emma Brown, Stephen Lang, Ghulam Nabi (Lead / Corresponding author)

Research output: Contribution to journalArticle

3 Citations (Scopus)
175 Downloads (Pure)

Abstract

Background: To evaluate pre-surgical quantitative transrectal shear wave elastography (SWE) in the detection and characterisation of radioresistant prostate cancer.

Methods: Twelve men with recurrent prostate cancer following external beam radiotherapy were included in a prospective protocol-driven study. All underwent MR imaging and quantitative shear wave elastographic assessment of recurrent disease prior to salvage laparoscopic radical prostatectomy procedures. Images were used to construct 3D mold printing and histopathological processing of surgical specimen. Statistical analyses including ROC were generated using software programmes.

Results: There were 48 cancer foci identified on final histopathology using patient-specific mold-based approach in 12 patients. Mean number of lesion was 3.4 (range 2–4). Quantitative transrectal SWE showed a sensitivity and specificity 0.77 (95% CI 0.627–0.880) and 0.82 (95% CI 0.642–0.942), respectively. The diagnostic accuracy increased with increasing size of the lesions with overall AUC of 0.89.

Conclusions: In our series, quantitative transrectal SWE showed a good diagnostic accuracy in the detection and characterisation of recurrent prostate cancer following failed radiotherapy treatment. These findings may help in targeting biopsies or future focal treatment options.
Original languageEnglish
Pages (from-to)4552-4561
Number of pages10
JournalSurgical Endoscopy
Volume32
Issue number11
Early online date14 May 2018
DOIs
Publication statusPublished - Nov 2018

Keywords

  • Elastography
  • Prostate cancer
  • Radiotherapy
  • Surgery
  • Ultrasound

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