Evaluation of percutaneous biopsies of renal masses under MRI-guidance: a retrospective study about 26 cases.
Fiche publication
Date publication
mars 2015
Auteurs
Membres identifiés du Cancéropôle Est :
Pr GANGI Afshin
Tous les auteurs :
Garnon J, Schlier A, Buy X, Tsoumakidou G, de Mathelin M, Breton E, Gangi A
Lien Pubmed
Résumé
OBJECTIVE: To determine whether MRI allows safe and accurate guidance for biopsies of renal masses. MATERIALS AND METHODS: Between May 2010 and September 2013, 26 patients (15 men and 11 women) with 26 renal masses underwent MRI-guided percutaneous biopsy. For each patient, we retrospectively collected the epidemiological, procedural and histopathological data. RESULTS: Mean size of tumour was 3.6 cm (range 0.6 - 9 cm). Mean procedure time was 48 minutes (range 37 - 70 min). Malignancy was found in the percutaneous samples in 81 % (21/26) of the masses. All these cases were considered as true positive biopsies. Benignity was found in the percutaneous samples in 5/26 (19 %) of the masses but was confirmed only in 3 cases. The other 2 cases included one false negative case and one undetermined biopsy, as patient was lost to follow-up. The sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV) and accuracy of this study were 95.4 %, 100 %, 100 %, 75 % and 96 %, respectively CONCLUSION: MRI-guidance is safe and accurate to target renal masses.
Référence
Eur Radiol. 2015 Mar;25(3):617-23