Characteristics and Surgical Outcomes in Very Elderly Patients (≥75 years) with Renal Cell Carcinoma: Data from the Latin American Renal Cancer Group.

Background: The incidence of renal cell carcinoma (RCC) is increasing globally due to an aging population and widespread use of imaging studies.

Objective: The aim of this study was to describe the characteristics and perioperative outcomes of RCC surgery in very elderly patients (VEP), ≥ 75 years of age.

Methods: This is a retrospective comparative study of 3656 patients who underwent the treatment for RCC from 1990 to 2015 in 28 centers from eight Latin American countries.

Small renal masses in Latin-American population: characteristics and prognostic factors for survival, recurrence and metastasis - a multi-institutional study from LARCG database.

Background: To evaluate demographic, clinical and pathological characteristics of small renal masses (SRM) (≤ 4 cm) in a Latin-American population provided by LARCG (Latin-American Renal Cancer Group) and analyze predictors of survival, recurrence and metastasis.

Methods: A multi-institutional retrospective cohort study of 1523 patients submitted to surgical treatment for non-metastatic SRM from 1979 to 2016. Comparisons between radical (RN) or partial nephrectomy (PN) and young or elderly patients were performed.

Penile melanoma: a 20-Year analysis of six patients at the National Cancer Institute of Peru, Lima.

Unlabelled: Melanoma of the urogenital tract is extremely rare, accounting for less than 0.1% of melanoma cases. The global literature currently describes only 220 cases of penile melanoma, most commonly located on the glans penis.

[Primary testicular lymphoma: experience at the Instituto Especializado de Enfermedades Neoplásicas, Lima-Peru].

Introduction: Testicular lymphoma is a rare illness with peculiar characteristics but with a poor prognosis.

Material And Methods: We evaluated 32 patients retrospectively studying their epidemiologic characteristics, hematologic values, histologic type, metastasis sites, the treatment given and the survival. We compared our results with international reports and we think that prospective studies are needed for better conclusions.

[Pain during transrectal ultrasound guided needle biopsy of the prostate: comparison of the use or not of lidocaine gel].

Introduction: The prostate biopsy guided by ultrasound is the method of choice for early diagnosis of prostate cancer, is a safe whose main trouble is that it feels discomfort during the procedure.

Material And Methods: From July 2004 until March 2005 we prospectively studied 114 patients who underwent transrectal ultrasound guided needle biopsy of the prostate, they were divided in two groups: in one group we used lidocaina gel 2% inside the rectum before the procedure and in the other group we did not use it. We compared the pain that patients felt during the procedure with a pain scale.

[Paratesticular mixed sarcoma: liposarcoma-rhabdomyosarcoma. Case report and bibliographic review].

Objective: Sarcomas arising from the urinary tract are rare, representing less than 2% of all urologic tumors. The paratesticular region is one of the most unfrequent locations. Leiomyosarcoma, rhabdomyo-sarcoma, liposarcoma, malignant fibrohistiocytoma, etc.

[Xanthogranulomatous pyelonephritis: clinical, radiological and pathologic characteristics].

Objectives: Xanthogranulomatous pyelonephritis is an atypical chronic infection which simulates a malignant renal neoplasia, definitive diagnosis of which is obtained by pathologic study after surgical removal. In this paper we analyze our experience and compare it to that reported on the literature.

Methods: We performed a retrospective study of cases of xanthogranulomatous pyelonephritis diagnosed in the period from January 1945 to December 2000 at the Institute of Neoplastic Diseases, analyzing clinical, radiological, and surgical features documented in the medical records.