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1.
BMC Urol ; 20(1): 85, 2020 Jul 02.
Article in English | MEDLINE | ID: mdl-32615971

ABSTRACT

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. Kaplan-Meier curves and log-rank tests estimated 10-year overall survival. Predictors of local recurrence or metastasis were analyzed by a multivariable logistic regression model. RESULTS: PN and RN were performed in 897 (66%) and 461 (34%) patients. A proportional increase of PN cases from 48.5% (1979-2009) to 75% (after 2009) was evidenced. Stratifying by age, elderly patients (≥ 65 years) had better 10-year OS rates when submitted to PN (83.5%), than RN (54.5%), p = 0.044. This disparity was not evidenced in younger patients. On multivariable model, bilaterality, extracapsular extension and ASA (American Society of Anesthesiologists) classification ≥3 were predictors of local recurrence. We did not identify significant predictors for distant metastasis in our series. CONCLUSIONS: PN is performed in Latin-America in a similar proportion to developed areas and it has been increasing in the last years. Even in elderly individuals, if good functional status, sufficiently fit to surgery, and favorable tumor characteristics, they should be encouraged to perform PN. Intending to an earlier diagnosis of recurrence or distant metastasis, SRM cases with unfavorable characteristics should have a more rigorous follow-up routine.


Subject(s)
Carcinoma, Renal Cell/diagnosis , Carcinoma, Renal Cell/mortality , Kidney Neoplasms/diagnosis , Kidney Neoplasms/mortality , Neoplasm Recurrence, Local/mortality , Aged , Carcinoma, Renal Cell/secondary , Carcinoma, Renal Cell/surgery , Cohort Studies , Databases, Factual , Female , Humans , Kidney Neoplasms/pathology , Kidney Neoplasms/surgery , Latin America , Male , Middle Aged , Nephrectomy/methods , Prognosis , Retrospective Studies , Survival Rate
2.
World J Urol ; 35(1): 57-65, 2017 Jan.
Article in English | MEDLINE | ID: mdl-27137994

ABSTRACT

PURPOSE: To describe the perioperative and oncology outcomes in a series of laparoscopic or robotic partial nephrectomies (PN) for renal tumors treated in diverse institutions of Hispanic America from the beginning of their minimally invasive (MI) PN experience through December 2014. METHODS: Seventeen institutions participated in the CAU generated a MI PN database. We estimated proportions, medians, 95 % confidence intervals, Kaplan-Meier curves, multivariate logistic and Cox regression analyses. Clavien-Dindo classification was used. RESULTS: We evaluated 1501 laparoscopic (98 %) or robotic (2 %) PNs. Median age: 58 years. Median surgical time, warm ischemia and intraoperative bleeding were 150, 20 min and 200 cc. 81 % of the lesions were malignant, with clear cell histology being 65 % of the total. Median maximum tumor diameter is 2.7 cm, positive margin is 8.2 %, and median hospitalization is 3 days. One or more postoperative complication was recorded in 19.8 % of the patients: Clavien 1: 5.6 %; Clavien 2: 8.4 %; Clavien 3A: 1.5 %; Clavien 3B: 3.2 %; Clavien 4A: 1 %; Clavien 4B: 0.1 %; Clavien 5: 0 %. Bleeding was the main cause of a reoperation (5.5 %), conversion to radical nephrectomy (3 %) or open partial nephrectomy (6 %). Transfusion rate is 10 %. In multivariate analysis, RENAL nephrometry score was the only variable associated with complications (OR 1.1; 95 % CI 1.02-1.2; p = 0.02). Nineteen patients presented disease progression or died of disease in a median follow-up of 1.37 years. The 5-year progression or kidney cancer mortality-free rate was 94 % (95 % CI 90, 97). Positive margins (HR 4.98; 95 % CI 1.3-19; p = 0.02) and females (HR 5.6; 95 % CI 1.7-19; p = 0.005) were associated with disease progression or kidney cancer mortality after adjusting for maximum tumor diameter. CONCLUSION: Laparoscopic PN in these centers of Hispanic America seem to have acceptable perioperative complications and short-term oncologic outcomes.


Subject(s)
Adenoma, Oxyphilic/surgery , Angiomyolipoma/surgery , Carcinoma, Renal Cell/surgery , Kidney Neoplasms/surgery , Nephrectomy/methods , Postoperative Complications/epidemiology , Adenoma, Oxyphilic/pathology , Aged , Angiomyolipoma/pathology , Blood Loss, Surgical , Carcinoma, Renal Cell/pathology , Conversion to Open Surgery , Databases, Factual , Female , Hand-Assisted Laparoscopy/methods , Humans , Kaplan-Meier Estimate , Kidney Neoplasms/pathology , Laparoscopy/methods , Length of Stay/statistics & numerical data , Logistic Models , Male , Margins of Excision , Mexico , Middle Aged , Minimally Invasive Surgical Procedures/methods , Multivariate Analysis , Neoplasm Staging , Operative Time , Proportional Hazards Models , Robotic Surgical Procedures/methods , South America , Spain , Tumor Burden , Warm Ischemia
3.
World J Urol ; 33(12): 2153-7, 2015 Dec.
Article in English | MEDLINE | ID: mdl-25690318

ABSTRACT

OBJECTIVE: To present mid-term outcomes from an international, multi-institutional cohort of patients undergoing vessel-sparing excision and primary anastomosis urethroplasty for the reconstruction of the anterior urethra. MATERIALS AND METHODS: From June 2003 to December 2011, 68 patients underwent vessel-sparing anterior urethral reconstruction at five different international institutions using the vessel-sparing technique described by Jordan et al. (J Urol 177(5):1799-1802, 2007). RESULTS: Patients' age range was from 3 to 82 years (mean 51.2). Stricture length ranged from 1 to 3 cm (mean 1.78). After a mean follow-up of 17.6 months, 95.6 % of patients had a widely patent urethral lumen. Three patients failed the procedure, requiring either direct vision internal urethrotomy or urethral dilation, after which all were free of symptoms and did not require further instrumentation. Complications were minimal and as expected following open urethroplasty. CONCLUSION: Preservation of blood supply is a noble pursuit in surgery; however, it can be technically difficult and often requires more time and effort. This vessel-sparing technique for anterior urethral reconstruction is reproducible and appears to be reliable in this international cohort. Larger studies and longer follow-up are needed to support these encouraging results.


Subject(s)
Plastic Surgery Procedures , Urethral Stricture/surgery , Adolescent , Adult , Aged , Aged, 80 and over , Anastomosis, Surgical , Child , Child, Preschool , Humans , Length of Stay , Male , Middle Aged , Operative Time , Reproducibility of Results , Retrospective Studies , Treatment Outcome , Urethral Stricture/diagnosis , Urethral Stricture/etiology , Young Adult
4.
Urol Case Rep ; 24: 100864, 2019 May.
Article in English | MEDLINE | ID: mdl-31211074

ABSTRACT

A case of a patient with diagnosis of Solitary Fibrous Tumor of de urinary bladder is presented. A 69 year old man presented with abdominal pain localized at the hypogastrium. In the computed tomography appears a mass of 100 × 80 mm at the minor pelvis. Mass resection, radical cystoprostatectomy and ileal conduit diversion were done. A Solitary Fibrous Tumor of the urinary bladder was diagnosed. CD 34 (+). Surgical resection with negative margins has curative intention. Is necessary long-term follow up to assure there is not local or distant recurrence.

5.
Buenos Aires; s.n; 1989. 151 p. ilus.
Monography in Spanish | BINACIS | ID: biblio-1205323

ABSTRACT

Este trabajo se basa en la experiencia adquirida en transplantes de riñón, por un mismo equipo quirúrgico, a través de 19 años de actuación, en una misma institución CEMIC. Desde el inicio, en 1970, se estudió exahustivamente la antomía del dador, del receptor y del aparato urinario, en relación con el injerto renal, lo que se expresa en los correspondientes capítulos de este trabajo. El objeto es disminuir la agresión al máximo aprovechando las vías de abordaje anatomicamente más simples de evolución más satisfactoria y con mejor recuperación del paciente. También describimos en detalle y así lo referimos, la celda renal y sus relaciones, la estructura del riñon y la arquitectura intrarrenal, tanto canicular como vascular. La primera por la posibilidad de derivaciones urinarias tradicionales y desde 1985 de la cirugía endourológica pos-trasplante. La segunda por la relación de los elementos vasculares del pedículo renal entre sí, con los órganos vecinos y con los grandes vasos. Importan y se describen también las malformaciones que se pueden diagnosticar previamente y que hacen a la selección del dador vivo relacionado, o que durante el acto operatorio, obliguen a cirugías complementarias inmediatas. Expuestas en otro capítulo, la estructura anatómica y funcional de la vía excretora así como su irrigación y las oportunidades que esta brinda en la reconstrucción canicular urinaria. Se estudian también las técnicas posibles en la anastomosis vasculares y en la vía excretora así como sus variaciones. Se describen los recaudos quirúrgicos, basados en la antomía del aparato urinario, que permite prevenir ciertas complicaciones, como por ejemplo, el reflujo y las intervenciones complementarias, si a pesar de todo aquellas ocurren. Finalmente se hace mención a la posibilidad del uso de segmentos entéricos, en reemplazo de sectores urinarios.


Subject(s)
Anastomosis, Surgical , Tissue Donors , Nephrectomy , Kidney/anatomy & histology , Kidney Transplantation , Urography
6.
Buenos Aires; s.n; 1989. 151 p. ilus. (83367).
Monography in Spanish | BINACIS | ID: bin-83367

ABSTRACT

Este trabajo se basa en la experiencia adquirida en transplantes de riñón, por un mismo equipo quirúrgico, a través de 19 años de actuación, en una misma institución CEMIC. Desde el inicio, en 1970, se estudió exahustivamente la antomía del dador, del receptor y del aparato urinario, en relación con el injerto renal, lo que se expresa en los correspondientes capítulos de este trabajo. El objeto es disminuir la agresión al máximo aprovechando las vías de abordaje anatomicamente más simples de evolución más satisfactoria y con mejor recuperación del paciente. También describimos en detalle y así lo referimos, la celda renal y sus relaciones, la estructura del riñon y la arquitectura intrarrenal, tanto canicular como vascular. La primera por la posibilidad de derivaciones urinarias tradicionales y desde 1985 de la cirugía endourológica pos-trasplante. La segunda por la relación de los elementos vasculares del pedículo renal entre sí, con los órganos vecinos y con los grandes vasos. Importan y se describen también las malformaciones que se pueden diagnosticar previamente y que hacen a la selección del dador vivo relacionado, o que durante el acto operatorio, obliguen a cirugías complementarias inmediatas. Expuestas en otro capítulo, la estructura anatómica y funcional de la vía excretora así como su irrigación y las oportunidades que esta brinda en la reconstrucción canicular urinaria. Se estudian también las técnicas posibles en la anastomosis vasculares y en la vía excretora así como sus variaciones. Se describen los recaudos quirúrgicos, basados en la antomía del aparato urinario, que permite prevenir ciertas complicaciones, como por ejemplo, el reflujo y las intervenciones complementarias, si a pesar de todo aquellas ocurren. Finalmente se hace mención a la posibilidad del uso de segmentos entéricos, en reemplazo de sectores urinarios. (AU)


Subject(s)
Anastomosis, Surgical , Tissue Donors , Nephrectomy , Kidney Transplantation , Urography , Kidney/anatomy & histology
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