Impact of preoperative body composition in patients with renal cell carcinoma submitted to surgical treatment.

Objective: To evaluate the impact of preoperative body composition in patients with renal cell carcinoma (RCC) undergoing surgical treatment.

Materials And Methods: This was a retrospective study of 52 patients with RCC undergoing total or partial nephrectomy. Body composition assessment was performed using the body mass index, together with computed tomography analysis at the level of the third lumbar vertebra to measure the area of visceral adipose tissue, as well as the area and density of skeletal muscle mass.

Circulating tumor cells as a predictor and prognostic tool for metastatic clear cell renal carcinoma: An immunocytochemistry and genomic analysis.

Background: Treatment of metastatic clear cell renal carcinoma (mccRCC) has changed dramatically over the past 20 years, without improvement in the development of biomarkers. Recently, circulating tumor cells (CTCs) have been validated as a prognostic and predictive tool for many solid tumors.

Objective: We evaluated CTCs in blood samples obtained from patients diagnosed with mccRCC.

Long-term oncological and surgical outcomes after Video Endoscopic Inguinal Lymphadenectomy (VEIL) in patients with penile cancer.

Objective: To report outcomes from the largest multicenter series of penile cancer patients undergoing video endoscopic inguinal lymphadenectomy (VEIL).

Materials And Methods: Retrospective multicenter analysis. Authors of 21 centers from the Penile Cancer Collaborative Coalition-Latin America (PeC-LA) were included.

Prognostic role of the immunohistochemical expression of proteins related to the renin-angiotensin system pathway in nonmetastatic clear cell renal cell carcinoma.

Introduction: Stage migration has been observed in renal cell carcinoma (RCC) in recent decades; however, mortality rates have continuously increased in some countries. Tumoral factors have been characterized as major predictors of RCC. Nonetheless, this concept can be improved by combining these tumoral factors with other variables, including biomolecular factors.

Role of the Renin-Angiotensin System Components in Renal Cell Carcinoma: A Literature Review.

Purpose Of Review: The physiological aspects of renin-angiotensin system (RAS) components are described in this review. Additionally, we present the main results of studies that could indicate an association between alterations in these components and cancer, particularly renal cell carcinoma (RCC).

Recent Findings: The RAS undergoes a series of homeostatic and modulatory processes that extend to hypertrophy, hyperplasia, fibrosis, and remodeling, as well as angiogenesis, pro-inflammatory responses, cell differentiation, stem cell programming, and hematopoiesis.

Primary laparoscopic RPLND for pure seminona metastasis: feasibility of supine and lateral approaches.

Introduction: Retroperitoneal lymphadenectomy (RPLND) is well established as a primary treatment, especially for high-risk stage I and stage IIA/B nonseminomatous tumors, but its value in seminomatous tumors is underreported (1). Classically, seminomas with isolated retroperitoneal lymphadenopathy are treated with external beam radiation therapy or systemic chemotherapy. Although these modalities are effective, they are associated with significant long-term morbidity (2, 3).

A comparative study of AJCC and the modified staging system in pT2/pT3 penile squamous cell carcinoma - a validation on an external data set.

Aims: The recent changes in the American Joint Commission on Cancer, 8th edition (AJCC-8E) pT2 and pT3 tumour definitions for penile cancer need robust validation studies. A recent study redefined and modified the pT2 and pT3 stages incorporating the histopathological variables (tumour grade, lymphovascular invasion, perineural invasion) similar to that used in the current AJCC-8E pT1 stage tumour subclassification. In this study, we validate and compare this proposed staging with the AJCC staging systems on an external data set.

Simultaneous laparoscopic nephroureterectomy and robot-assisted anterior pelvic exenteration with intracorporeal ileal conduit urinary diversion: step-by-step video-illustrated technique.

Introduction:: One of the most remarkable characteristics of urothelial carcinomas is multifocality. However, occurrence of synchronous bladder cancer and upper urinary tract urothelial cancer (UTUC) is exceptional. Minimally invasive approach for these synchronous tumors was just occasionally reported (1-4).

False-Positive Uptake in Splenic Hemangioma on 68Ga-PSMA PET/CT Scan for Late Biochemical Recurrence of Prostate Cancer.

A 71-year-old man underwent 68Ga-PSMA PET/CT for evaluation of a late biochemical recurrence after radical prostatectomy. An intense PSMA uptake was identified in spleen. Additional evaluation with a contrast-enhanced MRI showed a splenic lesion consistent with splenic hemangioma.

Robot-assisted retroperitoneal lymphadenectomy (RPLND): video case report.

Introduction And Objective:: Germ cell tumors account for 90 to 95% of all testicular tumors. Approximately one-half of these cases are seminomas, and the other half constitutes non-seminomatous germ cell tumors (NSGCTs). The standard of care for men with more advanced or disseminated NSGCTs (stage IIB or higher) is to administer chemotherapy.

Prognostic Impact of Loss of SETD2 in Clear Cell Renal Cell Carcinoma.

Purpose: To evaluate the prognostic impact of immunohistochemical expression of SETD2 in patients with clear cell renal cell carcinoma (ccRCC).

Patients And Methods: A total of 662 patients with primary or metastatic ccRCC were evaluated. Two genitourinary pathologist reviewed all of the cases for uniform reclassification and determined the selection of the most representative tumor areas for construction of the tissue microarray (TMA).

Informed consent and a risk-based approach to oncologic surgery in a cancer center during the COVID-19 pandemic.

Background: Cancer patients configure a risk group for complications or death by COVID-19. For many of them, postponing or replacing their surgical treatments is not recommended. During this pandemic, surgeons must discuss the risks and benefits of treatment, and patients should sign a specific comprehensive Informed consent (IC).

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.

Advanced renal cell carcinoma (RCC) management: an expert panel recommendation from the Latin American Cooperative Oncology Group (LACOG) and the Latin American Renal Cancer Group (LARCG).

Purpose: The outcome of RCC has improved considerably in the last few years, and the treatment options have increased. LACOG-GU and LARCG held a consensus meeting to develop guidelines to support the clinical decisions of physicians and other health professionals involved in the care of RCC patients.

Methods: Eighty questions addressing relevant advanced RCC treatments were previously formulated by a panel of experts.

Complete metastasectomy in renal cell carcinoma: a propensity-score matched by the International Metastatic RCC Database Consortium prognostic model.

Introduction: We evaluated overall survival (OS) benefit of complete metastasectomy (CM) in metastatic renal cell carcinoma (mRCC) using a propensity score-matched (PSM) analysis to balance groups by age, gender and by the International Metastatic RCC Database Consortium prognostic model (IMDC).

Methods: We included patients (pts) treated at the AC Camargo Cancer Center between 2007 and 2016. Pairs were matched by age, gender and IMDC.

Prognostic value of PD-L1 expression for surgically treated localized renal cell carcinoma: implications for risk stratification and adjuvant therapies.

Background: We aimed to evaluate the prognostic role of programmed-death receptor ligand (PD-L1) in a multinational cohort of patients with localized renal cell carcinoma (RCC).

Methods: Formalin-fixed paraffin-embedded blocks of 1017 patients from the Latin American Renal Cancer Group were analyzed. Tissue microarrays were immunostained for PD-L1 using a commercially available monoclonal antibody.

Immunohistochemical negative expression of ezrin predicts poor prognosis in clear cell renal cell carcinoma.

Purpose: To analyze the immunohistochemical expression of ezrin and moesin in clear cell renal cell carcinoma (ccRCC). These proteins, as part of the ezrin-radixin-moesin complex link the cell membrane to the actin cytoskeleton, affecting such processes as cell adhesion, cell survival, cell motility, and signal transduction. Our aim was to examine the impact of their expression on clinical outcomes and survival rates.

Renal cell cancer treatment: an expert panel recommendation from the Latin American cooperative group-genitourinary and the Latin American renal cancer group: focus on surgery.

Background: Renal cell cancer (RCC) is one of the 10 most common cancers in the world, and its incidence is increasing, whereas mortality is declining only in developed countries. Therefore, two collaborative groups, The Latin American Oncology Cooperative Group-Genitourinary Section (LACOG-GU) and the Latin American Renal Cancer Group (LARCG), held a consensus meeting to develop this guideline.

Methods: Issues (134) related to the treatment of RCC were previously formulated by a panel of experts.

Immunohistochemical expression of renin is a prognostic factor for recurrence in nonmetastatic renal cell carcinoma.

Purpose: To analyze the intratumoral immunohistochemical expression of renin and its value as a prognostic factor for recurrence in nonmetastatic clear cell renal cell carcinoma (ccRCC).

Methods: A total of 498 patients with nonmetastatic ccRCC from the Latin American Renal Cancer Group database who underwent partial or radical nephrectomy between 1990 and 2016 were selected. All cases were revised, and 2 distinct samples were obtained for tissue microarray construction.

Loss of BAP1 expression in metastatic tumor tissue is an event of poor prognosis in patients with metastatic clear cell renal cell carcinoma.

Purpose: To evaluate the prognostic impact of the protein expression of both PBRM1 and BAP1 in metastatic tissue of patients with metastatic clear cell renal cell carcinoma (ccRCC).

Patients And Methods: In all 124 consecutive cases of metastatic ccRCC, who underwent metastasectomy or biopsy of metastatic tumor tissue between 2007 and 2016 were selected from the medical records of our institution. Additionally, 38 paired cases with tissue from the primary tumor involving radical or partial nephrectomy for ccRCC were also selected.

Tissue Expression of Erythropoietin Predicts Survival Rates in Clear Cell Renal Cell Carcinoma.

Objective: To evaluate immunohistochemical erythropoietin (EPO) expression in clear cell renal cell carcinoma (ccRCC), its association with major clinicopathological variables and its prognostic impact.

Methods: A total of 220 patients with renal cell carcinoma (RCC) surgically treated between 1989 and 2009 were evaluated in this multi-institutional study. All the cases were reviewed by a single pathologist and the immunohistochemical reactivity to EPO was analysed using tissue microarray.

Expanding morphological and clinical aspects of hereditary leiomyomatosis and renal cell carcinoma (HLRCC): a case report in a patient with unusual morphology and clinical presentation.

Renal cell carcinoma (RCC) accounts for 2-3% of all malignant disease in adults. Hereditary RCC represents 5 to 8% of kidney tumors. Hereditary leiomyomatosis and renal cell carcinoma (HLRCC) represents an autosomal dominant syndrome that results from a germline mutation in fumarate hydratase gene (FH).

Prognostic impact of concomitant loss of PBRM1 and BAP1 protein expression in early stages of clear cell renal cell carcinoma.

Purpose: To evaluate the prognostic impact of immunohistochemical expression of BAP1 and PBRM1 in patients with early stage (pT1-pT2N0M0) clear cell renal cell carcinoma (ccRCC).

Patients And Methods: A total of 441 consecutive patients treated surgically for stages I and II (TNM-AJCC 2010) ccRCC between 1990 and 2016 were selected. All cases were reviewed for uniform reclassification and the most representative tumor areas were selected for the construction of a tissue microarray.

Long-term results of the implantation of the AMS 800 artificial sphincter for post-prostatectomy incontinence: a single-center experience.

Objectives: Report the long-term outcomes of the AMS 800 artificial sphincer (AS) for the treatment post-prostatectomy incontinence (PPI) in a single center in Brazil.

Materials And Methods: Clinical data from patients who underwent the procedure were retrieved from the medical records of individuals with more than 1 year of follow-up from May 2001 to January 2016. Continence status (number of pads that was used), complications (erosion or extrusion, urethral atrophy, and infection), malfunctions, and need for secondary implantation were evaluated.

Tissue-based molecular markers in upper tract urothelial carcinoma and their prognostic implications.

Upper tract urothelial carcinoma (UTUC) is a rare and aggressive disease that is associated with high rates of recurrence and death. Radical nephroureterectomy (RNU) with excision of the bladder cuff is considered the standard of care for high-risk UTUC, whereas kidney-sparing techniques can be indicated for select patients with low-risk disease. There is a significant lack of clinical and pathological prognostic factors for stratifying patients with regard to making treatment decisions.