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Remote frozen section service in Norway

I Nordrum¹, T J Eide

¹Department of Pathology, University of Tromsø, Norway.

Archives D'Anatomie Et De Cytologie Pathologiques

|January 1, 1995

Summary

Remote frozen section services, utilizing telepathology, achieved an 89% accuracy in diagnosing malignancy for breast and thyroid tissues. This system offers a viable solution for hospitals lacking on-site surgical pathology services.

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Area of Science:

Medical Imaging
Pathology
Telemedicine

Background:

Remote frozen section service established in northern Norway since 1990.
Two hospitals connected to University Hospital via tele-network for remote diagnostics.

Purpose of the Study:

To evaluate the efficacy and accuracy of a dynamic telepathology system for remote frozen section diagnosis.
To assess the diagnostic performance and turnaround time of telepathology services.

Main Methods:

Utilized a dynamic telepathology system with motorized video microscopes and a two-way audio/video telenetwork.
Employed videocodec for image compression at a transfer rate of 384 Kbit/s.
Transmitted and displayed real-time video images of surgical specimens and frozen sections.

Main Results:

Examined tissue from 100 patients between 1990 and 1994, with breast and thyroid comprising 74% of cases.
Achieved 89% accuracy in correctly diagnosing benign versus malignant conditions.
Reported one false positive, three false negatives, and seven deferred diagnoses, with two deferred cases later confirmed as malignant.
Average examination time per frozen section was 12 minutes (range: 3-45 min).

Conclusions:

The remote frozen section service demonstrated high diagnostic accuracy for malignancy.
Telepathology is a recommended solution for hospitals without local surgical pathology services.
The system proved effective in providing timely and accurate frozen section diagnoses remotely.

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