Related Experiment Video
Updated: Apr 7, 2026

DIPLOMA Approach for Standardized Pathology Assessment of Distal Pancreatectomy Specimens
Published on: February 1, 2020
Decreased faux addenda following standardisation of pathologist practice
Maxwell L Smith1, Amy J Wendel-Spiczka1, Matthew A Zarka1
1Department of Laboratory Medicine and Pathology, Mayo Clinic Arizona, Scottsdale, Arizona, USA.
Aims:
We wanted to improve the quality of histopathology addenda and amendments by introducing standardised nomenclature and procedures.
Methods:
We standardised amendment and addenda definitions, implemented a pathologist visual work tool, and evaluated and quantitated all amendments and addenda for 3 months prior to implementation and 17 months after.
Results:
In the 3-month pre-intervention period, 32 of 979 addenda (3.3%) were misused and 18 of 98 amendments (18.4%) were incorrectly classified. In the 17-month post-intervention period, 57 of 5906 addenda (1.0%) were misused and 54 of 752 amendments (7.2%) were incorrectly classified. These differences were statistically significant (p<0.0001).
Conclusions:
The introduction of standardised nomenclature and a visual work tool significantly improved the quality of histopathology addenda and amendments.
Insights
Standardized nomenclature and a visual tool significantly improved histopathology addenda and amendments. This enhanced accuracy in pathology reporting, reducing errors in addenda and amendments for better patient care.
Area of Science:
- Medical Pathology
- Histopathology Reporting
Background:
- Histopathology reports are critical for patient diagnosis and treatment.
- Addenda and amendments are used to correct or update initial reports.
- Current practices for addenda and amendments lack standardization, leading to potential errors.
Purpose of the Study:
- To improve the quality of histopathology addenda and amendments.
- To introduce standardized nomenclature and procedures for pathology reporting.
- To reduce errors in the classification and usage of addenda and amendments.
Main Methods:
- Standardized definitions for amendment and addenda were established.
- A visual work tool was implemented for pathologists.
- Amendments and addenda were quantitated for 3 months pre- and 17 months post-intervention.
Main Results:
- Pre-intervention: 3.3% of addenda misused, 18.4% of amendments misclassified.
- Post-intervention: 1.0% of addenda misused, 7.2% of amendments misclassified.
- Statistical analysis showed significant improvement (p<0.0001).
Conclusions:
- Standardized nomenclature and a visual work tool significantly enhance histopathology reporting quality.
- The intervention led to a marked reduction in errors related to addenda and amendments.
- This approach is effective for improving the reliability of pathology report updates.
Related Concept Videos
Standards of Care II
Standards of Care I

