AI in Histopathology: Supporting Pathologists in Evolving Diagnostic Demands

Stuart Dalrymple

Histopathology is at the heart of modern medicine. Histopathology provides the final diagnosis for cancer and other serious diseases. Across the industry, there is a growing need for scalable tools that support clinical accuracy and diagnostic efficiency. Increasing caseloads, more complex specimens and a pathology workforce shortage only add to this.

Artificial intelligence (AI) is not a replacement for pathology; only expertise may solve this issue. However, AI as an assistive tool could take pressure off histopathologists. AI in Histopathology can streamline workflows and enhance consistency in routine tasks.

Role of Histopathology in Cancer Diagnosis

Histopathology is the gold standard for diagnosing most malignancies. By looking at tissue under the microscope, pathologists can assess architectural and cellular features to diagnose disease. This also helps determine tumour type and informs treatment strategies. These assessments guide critical decisions in oncology – from surgical planning to systemic therapy.

In cancer diagnosis, histopathologists are responsible for:

  • Identifying and classifying tumour types
  • Assessing tumour grade and differentiation
  • Evaluating margin status, lymph node involvement and invasion
  • Interpreting immunohistochemical and molecular markers
  • Providing prognostic and predictive insights for therapy selection

This requires accuracy, experience and significant time. As biopsy volumes grow; driven by better screening programs and increased clinical awareness, pathology services are stretched. This is why we believe AI tools that support diagnostic workflows without compromising clinical standards are so important.

How AI Fits into Histopathology Workflows

AI in histopathology is best thought of as a supporting technology that works alongside pathologists, not instead of them. AI's greatest value is in managing the high-volume, repetitive parts of tissue analysis where manual tasks consume time and resources. Using large datasets of annotated slides, deep learning algorithms can be trained to detect patterns, identify atypical regions and segment tissue structures quickly and consistently.

Instead of overriding human judgment, AI tools are designed to assist. Slides can be triaged by likelihood of pathology, not simply the cases that arrived on the pathologists’ desk first. This allows pathologists order additional stains early in the day, improving the chance of signing out that case earlier. It also helps triage teams allocate cases to the right Pathologists, whilst allowing for a better mix of easy and more complex cases, which can reduce cognitive load.

Practical Applications of AI in Histopathology Workflows

AI in histopathology is already supporting clinical workflows in several areas. Both routine and more advanced tasks where automation reduces variability and speeds up interpretation such as:

  • Mitotic count and tumour grading
  • Immunohistochemistry quantification, including ER, PR and HER2 markers
  • Tissue classification and segmentation for tumour versus stromal regions
  • Slide triage based on feature detection and abnormality scoring
  • Digital pre-screening to identify high-priority cases earlier in the workflow
  • Automatic quantification and measurement, as well as core involvement and Gleason grading (for Prostate)
  • Pre-filling of synoptic and clinical reports, allowing pathologists to make edits as required

While these tasks used to require extensive manual effort, AI can now do them quickly and reproducibly. This still requires final validation from the reporting pathologist.

Benefits of AI in Histopathology

Integrating AI into histopathology delivers measurable benefits to both diagnostic accuracy and lab efficiency. These tools manage the growing volume of biopsies without compromising patient care.

The most clinically relevant benefits of AI in histopathology are:

  • Faster initial analysis and triage
  • Greater consistency, applying standardised criteria across similar cases and reducing intra-observer variability
  • Reduced manual workload, allowing experts to focus on interpretation, not measurement
  • Faster turnaround times, especially for high-risk or urgent cases
  • Better scalability, in labs with staff constraints or regional service gaps
  • “Second pair of eyes”, with AI scouting for small foci that may have been missed

Clinical Oversight and Quality

While AI may do parts of slide review, it can’t replace the interpretive expertise of a trained histopathologist. All outputs require clinical context and specific judgment. Diagnosis remains with the pathologist, who must determine if AI-suggested findings are relevant, significant or incidental.

For safe and effective use of AI in histopathology workflows requires:

  • Clinical validation on diverse and representative datasets
  • Seamless integration with laboratory information systems (LIS) and digital pathology infrastructure
  • Active pathologist training to interpret AI-assisted outputs confidently
  • Continuous quality monitoring to ensure that safety and accuracy are maintained

Without these foundations, AI could be misapplied and undermine its benefits.

Challenges and Considerations

Despite the promise of AI in histopathology there are challenges. Some are technical, some logistical and many depend on the clinical context.

Considerations for deployment include:

  • Dataset limitations: AI requires training on large diverse image sets to work across populations
  • Interpretability: Many models are black boxes – transparency and auditability are key
  • Workflow: Tools must slot into existing systems without causing friction or delay
  • Regulatory: Clinical-grade AI is subject to strict regulatory standards, which can delay adoption
  • Adoption and training: Success depends on clinician trust, workflow alignment and long term engagement

Each of these areas requires conscious planning and cross-functional collaboration. With the right conditions in place, AI will be a long-term asset in histopathology.

Get in Touch

AI is already reshaping histopathology by supporting pathologists with faster analysis, improved consistency and reduced workload. As diagnostic demands grow, Pathology AI is helping laboratories maintain accuracy and efficiency without compromising clinical standards.

Solutions like Franklin.ai Digital Prostate are designed to integrate seamlessly into digital pathology workflows, enabling scalable support where it’s needed most. With the right tools, pathologists can focus on interpretation—while AI handles the routine.

Contact us to learn more about AI in histopathology or to book a demo. Let’s explore how Franklin.ai can complement your existing systems.

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