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Store-and-forward diagnostic telepathology of small biopsies by e-mail attachment: a feasibility pilot study with a view for future application in Thailand diagnostic pathology services.

Diagnostic telepathology by electronic mail (e-mail) attachment is relatively simple and incurs minimal cost. We assessed its accuracy and practical aspects in routine diagnostic pathology. Using 100 small biopsy specimens, a total of 1,488 images were digitized by one pathologist and sent as e-mail attachments from Nara Medical University, Japan, to a pathologist at Rajavithi Hospital, Thailand. His diagnoses were compared with his conventional light microscopy interpretation at a later date. The average total turnaround time spent on each case was 215 minutes, far less than the several days required by conventional post. There were two clinically significant errors. One was a diagnostically difficult case of colonic dysplasia, which was called carcinoma with telepathology. The other was a signet ring cell carcinoma of the stomach which was undetected with telepathology. Microscopy objective magnification and digital image quality may have played a role in impairing interpretation in both cases. Store-and-forward telepathology provides acceptable efficacy, a comparatively faster turnaround time than post and could be applied in routine work within Thai pathology services.