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Related Experiment Video

Updated: Jun 15, 2026

Cell Block Preparation from Cytology Specimen with Predominance of Individually Scattered Cells

Cell Block Preparation from Cytology Specimen with Predominance of Individually Scattered Cells

Published on: July 21, 2009

Columnar cell lesions: a consensus study among pathology trainees.

Bisong Haupt¹, Mary R Schwartz, Qingsong Xu

¹Department of Pathology, The Methodist Hospital, Houston, TX 77030, USA. bisongxu@yahoo.com

Human Pathology

|March 18, 2010

Summary

This summary is machine-generated.

A training tutorial significantly improved diagnostic agreement on breast columnar cell lesions among pathology trainees. This enhanced accuracy in identifying columnar cell hyperplasia and flat epithelial atypia is crucial for accurate breast cancer diagnosis.

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Comparative Lesions Analysis Through a Targeted Sequencing Approach

Comparative Lesions Analysis Through a Targeted Sequencing Approach

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Last Updated: Jun 15, 2026

Cell Block Preparation from Cytology Specimen with Predominance of Individually Scattered Cells

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Comparative Lesions Analysis Through a Targeted Sequencing Approach

Comparative Lesions Analysis Through a Targeted Sequencing Approach

Published on: November 5, 2019

Area of Science:

Breast Pathology
Diagnostic Accuracy
Pathology Education

Background:

Columnar cell lesions (CCL) of the breast encompass a spectrum, including columnar cell change, columnar cell hyperplasia, and flat epithelial atypia (FEA).
Accurate differentiation of these entities is critical for patient management and preventing misdiagnosis.
Variability in diagnostic interpretation among pathologists necessitates standardized training.

Purpose of the Study:

To evaluate the impact of a targeted training tutorial on the diagnostic accuracy of columnar cell lesions among pathology trainees.
To assess inter-observer agreement before and after the educational intervention.

Main Methods:

A consensus set of 24 breast CCL cases (8 each of columnar cell change, columnar cell hyperplasia, FEA) was curated by expert breast pathologists.
Fourteen pathology trainees (residents and fellows) independently diagnosed the cases before and after completing a slide-based tutorial.
Inter-observer agreement was quantified using kappa statistics.

Main Results:

Post-tutorial kappa values for CCL, columnar cell hyperplasia, and FEA (0.56, 0.41, 0.60) were significantly higher than pre-tutorial values (0.42, 0.25, 0.39).
Agreement on columnar cell change showed improvement, though not statistically significant.
The training intervention demonstrably enhanced diagnostic consistency for key CCL subtypes.

Conclusions:

Targeted tutorial training on diagnostic criteria effectively improves inter-observer agreement for breast columnar cell lesions.
This educational approach is valuable for pathology residents, fellows, and practicing pathologists.
Standardized training can enhance diagnostic reliability in breast pathology practice.