AI May Improve Breast Mitotic Scoring - Scorecard - MDSpire
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AI May Improve Breast Mitotic Scoring

Junior pathologists showed higher mitotic score accuracy and agreement with artificial intelligence assistance in a preliminary single-center reader study

  • By

  • Andrea Surnit

  • May 13, 2026

  • 4 min

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Clinical Scorecard: AI May Improve Breast Mitotic Scoring

At a Glance

CategoryDetail
ConditionBreast Carcinoma Mitotic Scoring
Key MechanismsAI-assisted detection of mitoses and identification of mitotic hotspots to support scoring according to the Elston and Ellis grading system.
Target PopulationJunior pathologists evaluating breast carcinoma specimens.
Care SettingSingle-center study at Bicêtre Hospital.

Key Highlights

  • AI assistance improved mitotic score accuracy from 62% to 76% for one investigator and from 64% to 78% for another.
  • Weighted Cohen’s kappa for agreement with expert consensus increased significantly with AI assistance.
  • AI improved consistency in hotspot selection, with intersecting regions increasing from 46% to 80% for one investigator.
  • Accuracy gains were most notable in diagnostically challenging subgroups, particularly mitotic score 2 and 3 cases.
  • The study emphasizes the variability in expert mitotic scoring and the potential of AI to enhance diagnostic reliability.

Guideline-Based Recommendations

Diagnosis

  • Utilize AI tools to assist in mitotic scoring to improve accuracy and reproducibility.

Management

  • Incorporate AI-assisted scoring in pathology workflows to enhance diagnostic confidence.

Monitoring & Follow-up

  • Regularly evaluate the performance of AI tools against expert consensus to ensure reliability.

Risks

  • Caution is advised due to the study's limited scope involving only two junior pathologists and retrospective specimen evaluation.

Patient & Prescribing Data

Patients with breast carcinoma undergoing mitotic scoring.

AI tools may aid pathologists in more accurately assessing tumor aggressiveness based on mitotic activity.

Clinical Best Practices

  • Encourage pathologists to use AI tools as adjuncts rather than replacements for their judgment.
  • Implement structured training for pathologists on the use of AI-assisted scoring systems.
  • Consider the variability in expert scoring when interpreting AI-assisted results.

Related Resources & Content

Original Source(s)

AI May Improve Breast Mitotic Scoring

  • by Andrea Surnit

  • May 13, 2026

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