Molecular Testing Improves Nodular Fasciitis Diagnosis - Summary - MDSpire

Molecular Testing Improves Nodular Fasciitis Diagnosis

USP6 analysis helps resolve uncertainty in atypical soft-tissue lesions

  • By

  • Andrea Surnit

  • April 3, 2026

  • 3 min

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Objective:

To evaluate the effectiveness of molecular testing in diagnosing nodular fasciitis, particularly in cases with non-specific presentations.

Key Findings:
  • Molecular testing identified USP6 rearrangements in all clinically non-specific cases of nodular fasciitis.
  • 66% of cases did not initially raise clinical suspicion for nodular fasciitis.
  • Fluorescence in situ hybridization detected rearrangements in 83% of tested cases.
  • Next-generation sequencing resolved inconclusive cases and identified rare fusion partners.
Interpretation:

Molecular diagnostics significantly enhance the diagnostic accuracy for nodular fasciitis, especially in atypical presentations that mimic aggressive tumors.

Limitations:
  • Small sample size.
  • Single-institution, retrospective design.
Conclusion:

Molecular testing can improve diagnostic confidence for pathologists and aid in recognizing nodular fasciitis in challenging cases.

Original Source(s)

Molecular Testing Improves Nodular Fasciitis Diagnosis

  • by Andrea Surnit

  • April 3, 2026

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