“…In this context, it is important to relate the quantity of available medical sources and systems on one hand, and the need of health professionals for quality information on the other, helping them performing their work with higher precision and lower time (Russell-Rose, Chamberlain & Azzopardi, 2018). Therefore, diagnostic systems (Chen et al, 2018) have become more relevant and researchers such as Xia et al attempt to take on the challenge through the mining of information from sources such as DO, Symptom Ontology (SYMP) and MEDLINE/PubMed citation records (Xia et al, 2018). We can also observe in the literature a large volume of studies that use the mining of texts from different unstructured or semi-structured medical information sources (Frunza, Inkpen & Tran, 2011;Mazumder et al, 2016;Singhal, Simmons & Lu, 2016;Xu et al, 2016;Tsumoto et al, 2017;Sudeshna, Bhanumathi & Hamlin, 2017;Aich et al, 2017;Gupta et al, 2018;Rao & Rao, 2018;Zhao et al, 2018;Bou Rjeily et al, 2019).…”