Development and implementation of a data parsing protocol for companion animal cancer data.

Companion animal cancer diagnostic reports are text-based documents containing essential information on tumor classification and diagnosis. Establishing an animal cancer registry requires integrating and extracting structured data from diverse report formats across multiple providers. This study presents the development of an object-oriented programming approach to standardize and automate cancer data collection for canine and feline patients, enabling the creation of the Australian Companion Animal Registry of Cancers (ACARCinom); Australia's first national registry of cat and dog cancers. An object-oriented programming approach was developed using the C# language for data processing, tested on sample data from 6 data providers. The initial programming phase focused on designing a parser that identified report sections using regular expressions based on standardized headings. The text was then cleaned to remove unnecessary formatting and HTML tags. Data dictionaries containing preferred terms and synonyms were used to extract key information such as diagnosis, topography, grade, and metastasis, improving consistency and accuracy. A coordinate map of extracted terms was generated to analyze spatial relationships within the report, allowing prioritization of diagnoses. The system also logged parsing decisions and potential issues for expert review. Markup using HTML tags enabled clear visualization of parsed content within the original reports. Extracted data and patient metadata were stored in an intermediary database table, allowing veterinary pathology experts to review and refine entries before final import. This automated solution streamlines data extraction and standardization from diverse sources, enabling the efficient analysis of cancer records and enhancing research and surveillance capacity in veterinary oncology.