ASOCIACION DE LA CLASIFICACION LI-RADS 2018 CON LOS HALLAZGOS HISTOPATOLOGICOS DE CARCINOMA HEPATOCELULAR, EN EL CENTRO MEDICO NAVAL, PERIODO: ENERO 2016 - DICIEMBRE 2020

The LI-RADS Classification is an interpretation and reporting system to classify focal alterations of the liver with the risk of developing Hepatocellular Carcinoma, using a series of major criteria in Computed Tomography and Magnetic Resonance These findings can be classified into 5 categories.The objective of this thesis is to identify if there is an association between the LI-RADS 2018 classification and the histopathological results of patients with Hepatocellular Carcinoma from the Naval Medical Center. Materials And Methods:An observational, descriptive, cross-sectional, retrospective study was carried out from January 2016 to December 2020. In this study, 35 patients with a diagnosis of Hepatocellular Carcinoma were analyzed, who underwent Computed Tomography or Abdomino-pelvic Magnetic Resonance , to associate said pathology with imaging findings, complying with the most characteristic major criteria that allow staging in the LI-RADS 2018 System. Results:Of the 35 patients, 57% were women (n = 20), 43% were men (n = 15). Of the total number of patients, 80% were Beneficiaries and the method of obtaining the sample for all patients was closed biopsy with a percutaneous needle. The distribution of the 2018 LI-RADS scale in all patients with liver biopsy was: LI-RADS 1 n = 8 (22.8%), LI-RADS 2 n = 5 (14.2%), LI-RADS 3 n = 12 (34.2%), LI-RADS 4 n = 3 (8.5%), LI-RADS 5 n = 7 (20%). It was found that the LI-RADS 5 category obtained a value of p = 0.001, with a specificity of 100%, a sensitivity of 70%, a PPV of 100% and a NPV of 89%, with an incidence of 20%. Conclusions:This study shows, through the results obtained, that there is a positive association between the LI-RADS 2018 classification of the ACR and the histopathological findings of Hepatocellular Carcinoma.