Testicular torsion Point-based Assessment and Imaging tool - identifying Need for Surgical exploration (TPAINS): a clinical algorithm for detecting testicular torsion

Authors

  • Nathalie Dahlgren Department of Radiology, Department of Clinical Sciences, Helsingborg Hospital, Lund University, Helsingborg, Sweden
  • Gustav Sundström Department of Radiology, Department of Clinical Sciences, Helsingborg Hospital, Lund University, Helsingborg, Sweden
  • Charlotta Nilsson Department of Pediatrics, Department of Clinical Sciences, Helsingborg Hospital, Lund University, Helsingborg, Sweden
  • Magnus Wagenius Department of Urology, Department of Clinical Sciences, Helsingborg Hospital, Lund University, Helsingborg, Sweden

DOI:

https://doi.org/10.2340/sju.v61.45578

Keywords:

Testicular torsion, TWIST score, ultrasound, spermatic cord torsion, assessment algorithm

Abstract

Objective: Testicular torsion (TT) is a medical emergency, difficult to identify solely through clinical evaluation. This study aims to develop an assessment algorithm with a safe lower threshold for complementary ultrasound.

Material and methods: Males between 1 and 30 years of age assessed for suspected TT during the years 2019 – 2023 were retrospectively included. Clinical assessments were conducted by primarily nonurologists and ultrasounds by radiologists. An assessment algorithm named Testicular torsion Point-based Assessment and Imaging tool - identifying Need for Surgical exploration (TPAINS) was developed based on symptoms showing significant correlation with TT.

Results: Of the 417 patients included, 68 (16%) were surgically explored and 33 (8%) diagnosed with TT. Six symptoms showing a significant association with TT were combined for the development of the algorithm TPAINS. With a cut-off value of ≥2 points, TPAINS showed a sensitivity of 100% (confidence interval, CI: [90, 100]), specificity 54% (CI [49 – 59]), and an AUC-value of 0.89 (95% CI [84 – 94]).

Conclusions: This study concludes that symptom-based evaluation, together with a low threshold for ultrasound, is a promising approach for the detection of TT. The developed algorithm, TPAINS, includes an ultrasound assessment and focuses on safe lower thresholds for further clinical actions – hoping for a reduced rate of unnecessary surgical explorations.

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Published

2026-03-30

How to Cite

Dahlgren, N., Sundström, G., Nilsson, C., & Wagenius, M. (2026). Testicular torsion Point-based Assessment and Imaging tool - identifying Need for Surgical exploration (TPAINS): a clinical algorithm for detecting testicular torsion. Scandinavian Journal of Urology, 61(1), 92–98. https://doi.org/10.2340/sju.v61.45578

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