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A Validation Study Of WSI-based Primary Diagnosis For Malignant Lymphoma | 80456
ISSN: 2161-0681

Journal of Clinical & Experimental Pathology
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A validation study of WSI-based primary diagnosis for malignant lymphoma

2nd International Conference on Digital Pathology & Image Analysis

Tomoo Itoh

Kobe University Hospital, Japan

Keynote: J Clin Exp Pathol

DOI: 10.4172/2161-0681-C1-042

Background: The digital pathology is an emerging technology, and its usage on routine practices is spreading worldwide rapidly. Very recently, FDA allowed marketing of first whole slide imaging (WSI) system for digital pathology, which enables us use the system even for primary diagnosis. This epoch-making achievement owes a lot to scientific evidences indicated that WSI is eligible for making accurate pathological diagnoses. However, those studies typically targeting small specimens alone and the cases requiring immunohistochemistry or special staining, such as malignant lymphoma, were excluded in many studies. Objective: To provide an evidence of usability of WSI diagnosis for primary diagnosis of malignant lymphoma compared to conventional glass slide diagnosis and optical microscope. Design: The cases of malignant lymphoma were retrieved from our case collection. The all slide glasses, including H&E and immunohistochemistry were digitized using a WSI scanner, NanoZoomer RS (Hamamatsu), with X40 magnification, and a well-trained pathologist for lymphoma diagnosis had reviewed and made diagnosis for the digitized cases with more than 2 months of washout time interval. Discrepancies between microscope slide and WSI diagnosis were classified into three categories; concordance, major discrepancy (defined as ones associated with significant difference in clinical treatment), and minor discrepancy (defined as ones associated with no significant difference in clinical treatment). Result: At the time of writing this abstract, the study was still ongoing. Tentative data showed excellent concordance rate, over than 95%, and which was much better than we expected. Conclusion: WSI is applicable for primary diagnosis of malignant lymphoma, if we make diagnoses with combination of adequate clinical information, H&E morphology, and immunohistochemistries.

Tomoo Itoh has completed his PhD at Hokkaido University Graduate School of Medicine and presently he is a Professor and Deputy Director of Diagnostic Pathology at Kobe University Hospital, Japan. He is a Board Certified Member of the Japanese Society of Pathology and Board Certified Member of the Japanese Society of Clinical Cytology. He was President of 15th Annual Meeting of Japanese Society of Digital Pathology held in Kobe in 2016, and now one of the core members of the Society.