Deep Learning for Automated Extraction of Primary Sites from Cancer Pathology Reports
[2];
[4]
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Health Data Sciences Inst.
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Computational Sciences and Engineering Division and the Health Data Sciences Inst., Biomedical Sciences, Engineering, and Computing Group
- National Cancer Inst., Bethesda, MD (United States). Surveillance Research Program
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Computational Sciences and Engineering Division and the Health Data Sciences Inst., Biomedical Sciences, Engineering, and Computing Group
Pathology reports are a primary source of information for cancer registries which process high volumes of free-text reports annually. Information extraction and coding is a manual, labor-intensive process. Here in this study we investigated deep learning and a convolutional neural network (CNN), for extracting ICDO- 3 topographic codes from a corpus of breast and lung cancer pathology reports. We performed two experiments, using a CNN and a more conventional term frequency vector approach, to assess the effects of class prevalence and inter-class transfer learning. The experiments were based on a set of 942 pathology reports with human expert annotations as the gold standard. CNN performance was compared against a more conventional term frequency vector space approach. We observed that the deep learning models consistently outperformed the conventional approaches in the class prevalence experiment, resulting in micro and macro-F score increases of up to 0.132 and 0.226 respectively when class labels were well populated. Specifically, the best performing CNN achieved a micro-F score of 0.722 over 12 ICD-O-3 topography codes. Transfer learning provided a consistent but modest performance boost for the deep learning methods but trends were contingent on CNN method and cancer site. Finally, these encouraging results demonstrate the potential of deep learning for automated abstraction of pathology reports.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Institutes of Health (NIH)
- Grant/Contract Number:
- AC05-00OR22725; AC02-06CH11357; AC52-06NA25396; AC52-07NA27344
- OSTI ID:
- 1408007
- Journal Information:
- IEEE Journal of Biomedical and Health Informatics, Vol. 22, Issue 1; ISSN 2168-2194
- Publisher:
- IEEECopyright Statement
- Country of Publication:
- United States
- Language:
- English
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