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Grand RoundsWeekly Evidence Brief

Pathology

Edition

30-Second Takeaway

  • Multimodal AI combining digital slides and clinical data can outperform a common genomic assay for breast cancer prognostication.
  • Prospective AI assistance in prostate biopsy reporting reduced turnaround time and changed diagnoses in a small but meaningful fraction.

Week ending May 23, 2026

AI, education, and workflow: recent pathology evidence briefs

LLMs extract breast cancer pathology fields with high study-specific accuracy but variable validation

NPJ DIGITAL MEDICINEMay 23, 2026

This systematic review pooled nine studies covering about 14,161 breast pathology reports and multiple LLM architectures. Reported study-specific accuracies ranged from 87.7% to 97.4%, but metrics and target elements differed across studies. Quality assessment found just over half the studies had low overall risk, with the Outcome domain most variable. Key limitations include inconsistent reference-standard construction, sparse external validation, and poor fairness reporting.

Prospective multicenter evaluation shows AI aids prostate biopsy reporting and speeds workflow

NPJ DIGITAL MEDICINEMay 23, 2026

In three NHS centres, 1,613 prostate biopsy cases were evaluated, with 1,049 reported using AI assistance. Staged AI review altered diagnosis or Grade Group in 5.4% of reviewed cases and potentially affected management in 1.3%. Concurrent AI-assisted workflows reduced mean turnaround time by 30.1 hours at one site and lowered immunohistochemistry use across sites. Findings support clinical benefit for accuracy and efficiency, though impact on patient outcomes and broader generalizability remain unproven.

Self-paced pathology course achieved complete module knowledge-check completion in pilot cohort

JMIR MEDICAL EDUCATIONMay 21, 2026

A 24-module, self-paced online pathology course enrolled 29 biomedical researchers and scholars in a pilot cohort. All participants (100%) completed objective knowledge checks across every module, and most reported meeting learning objectives. Ninety-four percent reported improved understanding of basic pathology, and 79% reported applying learned material to current roles. This pilot suggests scalable training for nonpathologist scientists, but sample size and single-center setting limit generalizability.

References

Numbered in order of appearance. Click any reference to view details.

Additional Reads

Optional additional studies from this edition.

Edition context

Clinical signal

  • Treat promising AI prognostic tests as investigational until independent external validation and clinical utility studies exist.
  • When deploying AI-assisted reporting, monitor diagnostic discordance rates and workflow metrics like turnaround time and IHC ordering.
  • Use gamified digital tools and short online courses to scale pathology teaching for trainees and nonpathologist scientists.