Introduction:

renal masses are a biologically heterogeneous group of tumors that can be benign or malignant. Renal carcinomas represent 85% of solid tumors.

Objective:

to describe the anatomo-pathological results of renal masses in patients operated by laparoscopic surgery and identify the possible relation among the histological subtypes and other variables.

Methods:

an observational, analytic, cohort retrospective study that included 120 patients who underwent laparoscopic radical and partial nephrectomies, of those patients diagnosed with renal masses and treated from 2015-2020 was carried out. Descriptive statistics was utilized, and Student’s t-test and Ji-Square test (p>0,05) were used to correlate variables.

Results:

average age 58,2 years, males prevailed (65,8 %), incidental diagnosis (64,2 %), ASA II (45,8 %) and the R.E.N.A.L score was low/moderate. 85 % of the masses were malignant, in stage pT1a (53,9 %), significantly most were operated by radical nephrectomy (p=0,03). Cancer-specific survival was 98,8 % and mean follow-up time, 26,62 months (±1,97). The older age of the patients was associated to malignant tumors (p=0,0). Survival and tumor size were not related to histological subtypes (p>0,05, respectively).

Conclusions:

malignant renal masses prevailed and among them clear cell carcinoma, which was associated to older age. The malignant histological subtype and clear cell carcinoma were associated to the older age of the patients. Tumor size and survival were not associated to histological subtypes.

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