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O carcinoma renal (CR) é uma neoplasia maligna originária do epitélio tubular renal. Este tipo de neoplasia é rara e acomete geralmente cães machos de meia idade. Os sinais clínicos são inespecíficos, podendo se assemelhar a outras doenças e isso acaba dificultando o diagnóstico que é realizado através dos exames de imagem (ultrassonografia e raio-X), da laparotomia exploratória e histopatológico para confirmação. Para o tratamento sugere-se a nefrectomia em casos de carcinoma renal unilateral e quimioterapia, porém não demonstram um aumento na sobrevida dos pacientes. O presente trabalho tem como objetivo relatar o caso de um cão de 8 anos, que foi atendido devido a sinais de cardiopatia e ao retorno apresentou sinais como êmese, anorexia e dor abdominal. Realizou-se exame de ultrassom, onde identificou-se uma estrutura de 7cm do lado esquerdo, realizou-se também exame de raio-X e posterior laparotomia exploratória, seguida de nefrectomia. O material coletado e enviado para histopatológico confirmou carcinoma renal bem diferenciado, padrão papilar. Após diagnóstico, o paciente foi encaminhado para um especialista em oncologia veterinária, que de acordo com os resultados dos exames realizados novamente, optou-se por não entrar com o tratamento quimioterápico.

BACKGROUND: Metastasis to the oral cavity is infrequent, representing 1 to 3% of head and neck cases. The types of cancer that commonly cause metastasis to the mouth are lung, kidney, and prostate for men, and breast, kidney, and colon for women. The clinical presentation depends on the affected site and varies from an evident tumor to a slight swallow mimicking a reactive lesion, accompanied by pain and paresthesia. CLINICAL CASE: A 59-year-old woman evaluated in the Pathology and Oral Medicine Clinic of the Autonomous Metropolitan University of the City, diagnosticated with oral metastasis from renal carcinoma. CONCLUSION: Clinical findings lead to an accurate diagnosis; it is important to offer the appropriate treatment, by the specialist in Pathology and Oral Medicine, as part of the multidisciplinary team, to ensure a better quality of life in this type of patient. [ABSTRACT FROM AUTHOR]

Copyright of JBES: Brazilian Journal of Health Economics / Jornal Brasileiro de Economia da Saúde is the property of JBES: Brazilian Journal of Health Economics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introducción: el cáncer de riñón frecuentemente se presenta con metástasis sincrónicas. Son excepcionales los casos comunicados en la literatura donde el diagnóstico de la enfermedad surge a partir de una metástasis muscular. Objetivo: el objetivo del trabajo es presentar un caso clínico de metástasis en músculo deltoides izquierdo como primera manifestación de un carcinoma de células claras de riñón. Caso clínico: paciente de 76 años, sexo masculino, que se operó con diagnóstico de tumoración de región delitoidea izquierda cuyo estudio anatomopatológico informó una metástasis muscular de un carcinoma renal de células claras. Se realizó una tomografía axial computarizada que evidenció una tumoración renal derecha, por lo cual se realizó una nefrectomía que confirmó el diagnóstico del tumor primario. Discusión: el diagnóstico de metástasis muscular de un carcinoma de células claras de riñón, cuando es la primera manifestación de la enfermedad, habitualmente se realiza con el estudio de la pieza de resección quirúrgica o bien a través de una biopsia. Si bien el tratamiento de la metástasis en general es paliativo, el control local de la enfermedad solo es posible cuando se realiza una resección quirúrgica con márgenes libres, ya que otros tratamientos oncológicos no han demostrado ser eficaces.

Copyright of Cirugía y Cirujanos is the property of Publicidad Permanyer SLU and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Se presentó el caso clínico de una mujer de 51 años de edad, fumadora inveterada, con antecedentes de anemia de varios años de evolución y trastornos de la personalidad, tratados en ocasiones con fenotiacinas, que comienza a referir desde hace un mes episodios recurrentes, caracterizados por trastornos del estado de ánimo con elementos melancólicos. Estos problemas fueron percibidos por sus compañeros de trabajo, pero sin darle la debida importancia hasta que, en una mañana, la paciente despierta con una hemiparesia izquierda. Se constató por tomografía axial computarizada una imagen de tumoración cerebral valorada por Neurocirugía, y se sometió a tratamiento conservador por parte de dicha especialidad con radiaciones. Mejorado el cuadro, la paciente fue dada de alta con seguimiento ambulatorio hasta que regresa al hospital dos meses después con fiebre de doce días de duración, vómitos en proyectil, cefalea y estado confusional agudo, decidiéndose su reingreso en el hospital militar de Matanzas. La paciente falleció y en la autopsia se constató un adenocarcinoma renal derecho, pobremente diferenciado con metástasis cerebrales múltiples.

The clear cell renal carcinoma cutaneous metastases are mainly located in the head and thorax. Its presence establishes a poor prognosis, since it is indicative that the disease is advanced. These lesions are usually asymptomatic and rapidly growing, erythematous or violaceous, with prominent vasculature and well circumscribed; determined by histopathology and immunohistochemistry. Treatment consists of surgical excision and/or chemotherapy in case of multiple lesions. Although skin cell metastases of clear cell renal carcinoma are rare, it is necessary the dermatological description in terms of topography and morphology to relate it to this type of carcinoma, although it is not a good prognosis to find them, it could be a diagnosis of renal carcinoma of clear cells, which might not have had other manifestations. Follow-up skin assessment is suggested for all patients diagnosed with renal cancer. [ABSTRACT FROM AUTHOR]

Introduction: Renal cell carcinoma (RCC) is an aggressive disease worldwide. Objective: Study traditional prognostic factors associated with pathological reports and the novel markers survivin and B7-H1 by immunohistochemistry. Methods: In a reference hospital of Porto Alegre, Brazil, we conducted a cross-sectional study of RCC in patients who underwent radical nephrectomy between 2006 and 2009. We selected those who were diagnosed with the most common histologic subtypes: clear cell and papillary RCC. We retrospectively reviewed pathological data to determine traditional prognostic factors, like size, presence of coagulative necrosis, Fuhrman grade and tumor-node metastasis (TNM) system. Besides, we performed an immunohistochemistry (IHC) study with survivin and B7-H1. Results: Our sample had 98 cases, 90% of the cases were composed by clear cell histologic subtype, 73% were tumors classified as T1 and T2 in the TNM system, most were Fuhrman nuclear grade 2 or 3, and 70% were positive for necrosis. In relation to the new prognostic markers, we found 50 cases positive to survivin and 38 to B7-H1. In this investigation of traditional prognostic markers and new markers we observed that only necrosis was associated with positive results of biomarkers. < 0.001). Conclusion: This finding confirms previous studies that necrosis is an important factor to consider in the prognosis of RCC.

Mix renal carcinoma was noticed during the necropsic examination of a 14 year old mix breed female. Tumours were bilateral and metastasis was noticed in the spleen and myocard. Histological examination evidenced morphological aspects characteristic to the mixt renal carcinoma. Histological aspects described in this individual characterize renal cell carcinoma, also known as renal adenocarcinoma, hypernephroma or, in older literature, Grawitz tumour.

El carcinoma renal de células claras es el tipo histológico más frecuente. En el momento del diagnóstico, las metástasis están presentes en 25-30 % de los pacientes aproximadamente. La peculiar tendencia de dicho carcinoma a metastizar en localizaciones poco usuales, hace de este proceso oncológico un tumor primario a tener en cuenta en el diagnóstico diferencial de las metástasis como primera manifestación de neoplasia. Se presenta un caso poco frecuente, con tumor en fosa nasal izquierda y epistaxis recidivante, secundaria a metástasis de carcinoma renal como primer síntoma.The renal carcinoma of clear cells is the most frequent histological type. Metastasis is present in approximately 25-30 % of the patients in the diagnosis. The peculiar tendency of this carcinoma to make metastasis in not very usual areas, makes of this oncological process a primary tumour to keep in mind in the differential diagnosis of metastases as the first neoplasia manifestation. A not very frequent case is presented, with tumour in the left nasal cavity and recurrent epistaxis, secondary to metastasis of renal carcinoma as first symptom.

INTRODUÇÃO E OBJETIVO: O carcinoma de células renais (CCR) é umas das doenças urológicas de maior malignidade, correspondendo a 1%-3% de todos os tumores sólidos dos adultos. As les��es pré-malignas do CCR ainda não foram totalmente descritas. Achados de displasia intraepitelial tubular renal (DIETR) em áreas próximas ao tumor, livres de neoplasia, sugerem que esta alteração possa ser a precursora biológica de alguns tipos de CCR. O objetivo deste estudo é avaliar a possibilidade do uso de tissue microarray (TMA) no estudo da DIETR e do CCR e os parâmetros para sua utilização imuno-histoquímica (IHQ) utilizando os anticorpos anti-Ki-67 e p53 para confirmar a evidência de DIETR como precursora biológica do CCR. MATERIAL E MÉTODOS: O estudo foi realizado em 10 peças cirúrgicas de nefrectomias realizadas em pacientes com diagnóstico de CCR selecionadas no período de 2000 a 2005, em material arquivado no Instituto Nacional de Câncer (INCA). DISCUSSÃO: A utilização da técnica de TMA permite amostragem de várias áreas e realização da IHQ utilizando apenas duas lâminas, uma para cada marcador. Como não há na literatura descrição de utilização de TMA para estudo da DIETR, foi necessário inicialmente realizar estudo de validação para saber se haveria representatividade de lesões focais no TMA. RESULTADOS: A análise estatística não mostrou diferença entre a utilização de TMA com dois ou quatro cilindros de tecido ou o corte inteiro. CONCLUSÃO: O teste de validação de técnica artesanal de TMA autorizou o uso de dois cilindros de 1 mm² por caso.INTRODUCTION AND OBJECTIVE: Renal cell carcinoma is one of the most malignant urological diseases, corresponding to 1%-3% of solid tumors in adults. The finding of intratubular epithelial dysplasia (IED) next to tumor areas suggests that this can be the biological precursor of some types of renal cell carcinoma (RCC). The objective of this study is to evaluate the use of tissue microarray (TMA) to study IED and RCC by immunohistochemistry (IHC) with Ki-67 and p53 protein to confirm the evidence that IED is the biological precursor of RCC. MATERIAL AND METHOD: This study was performed in archival material from ten nephrectomy surgical specimens from Instituto Nacional de Câncer, between 2000 and 2005. DISCUSSION: TMA technique allows to sample and study several different areas from many patients in the same slide, using just one slide for each IHC marker. Once there was no previous study on IED by TMA, a validation test was needed first. RESULTS: There was no statistical difference between 2 or 4 tissue cores and the whole section analysis. CONCLUSION: TMA validation assay demonstrated that the use of two tissue cores with 1 mm² each was suitable to evaluate RCC and IED.

Resumen: El carcinoma renal de células claras es la variante más frecuente de carcinoma renal. En los últimos años, la atención se ha enfocado en la expresión de factores angiogénicos por estos tumores, lo que justificaría en parte su capacidad de crecer, invadir y diseminarse, determinando una peor evolución de aquellos pacientes con un perfil angiogénico desfavorable. Se estudiaron 83 piezas de nefrectomía con diagnóstico de carcinoma renal de células claras. Se recolectaron datos clínicos y patológicos. Los tumores fueron estudiados para evaluar la expresión inmunohistoquímica de los siguientes marcadores: VEGF-A, HIF-1?, CD34 y Ki67. Los resultados indicaron una relación lineal directa entre la expresión de estos cuatro marcadores. Además, la expresión de HIF-1? se encontraba directamente relacionada con el grado de Furhman, la invasión de la vena renal y el estadio tumoral. Asimismo, el índice de proliferación tumoral, evaluado con Ki67, se hallaba directamente relacionado con la presencia de necrosis, la invasión capsular y el estadio tumoral avanzado. Con respecto a la expresión de CD34, mientras mayor es la densidad vascular, menor es la necrosis tumoral y menor la sobrevida global. Los hallazgos resultan controvertidos en comparación con la literatura disponible. Se abriría, entonces, un escenario de investigación donde se destaca la importancia de generar estudios prospectivos y más estandarizados para determinar el rol que cumplen estos factores angiogénicos en la evolución tumoral y la posibilidad de estandarizar resultados que permitan un mejor estudio diagnóstico y pronóstico de estos tumores. Abstract Clear cell renal carcinoma is the most frequent type of renal carcinoma. Recently, attention has been focused in the expression of angiogenic factors by these tumors, which would justify in part their capacity to grow, invade and disseminate, stating a worse evolution of those patients with an unfavorable angiogenic profile. 83 samples of nephrectomy with a diagnosis of clear cell renal cell carcinoma were studied. Clinical and pathological data were collected. Tumors were studied to assess immunohistochemical expression of the following markers: VEGF-A, HIF-1?, CD34 and Ki67. Results indicated a direct linear relationship between expressions of these four markers. Besides, the expression of HIF-1? was directly related to Furhman grade, invasion of the renal vein and tumor stage. Likewise, tumor proliferation index, assessed with Ki67, was directly related to the presence of necrosis, capsular invasion and advanced tumor stage. Regarding the expression of CD34, vascular density was inversely related to tumor necrosis and overall survival. These findings are controversial compared with the available literature. Then, a research scenery would be open, where the importance of generating prospective and more standardized studies are highlighted to determine the role of these angiogenic factors in tumor evolution and prognostic evaluation of these tumors.

O adenocarcinoma do rim, ou hipernefroma, é a terceira neoplasia mais comum do trato geniturinário, sendo o de células claras o tipo principal, representando 60% dos casos, com pico de incidência entre 50 e 70 anos. A presença de metástase ao diagnóstico acomete em torno de 30% dos pacientes, tendo como principais sítios pulmões, ossos, pele, fígado e cérebro. Relatamos o caso de um paciente portador de carcinoma de células renais com metástase ao diagnóstico que, apesar de inserido na faixa etária predominante, tipo histológico mais frequente e quadro clínico característico, apresentava metástase a distância em local pouco observado na prática clínica. O paciente evoluiu para o óbito sem tempo hábil para o tratamento.Renal cell carcinoma or hypernephroma is the third most common neoplasia of the genitourinary tract. Its most common type, representing 60% of the cases, is the clear cell carcinoma, with an incidence peak between 50 and 70 years. Metastases are present at the time of diagnosis in approximately 30% of the patients, the major sites being lungs, bones, skin, liver, and brain. We report the case of a male patient with renal cell carcinoma, whose age, clinical findings, and tumor histological type matched with the most common ones for that pathology. Nevertheless, he already had distant metastasis in an uncommon site at the time of diagnosis. The patient died without undergoing specific treatment for renal cell carcinoma.

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Copyright of Nefrologia is the property of Revista Nefrologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Introducción: La resección quirúrgica del tumor más trombectomía es el tratamiento de elección siempre que el estado físico del paciente lo permita.Objetivos: Describir la conducta anestésica de un paciente tributario de una cirugía de alto riesgo cuya intervención quirúrgica constituye un gran desafío para cirujanos y anestesiólogos. Desarrollo: Se presenta caso clínico de paciente masculino, 59 años, con diagnóstico de hipernefroma izquierdo y trombo en vena cava inferior con extensión a aurícula derecha al que se le realizó nefrectomía radical izquierda, exposición de vena cava inferior con maniobra de “piggyback” al hígado, atriotomía derecha y cavotomía inferior para extracción de trombo, en un tiempo quirúrgico total de 7 horas y 30 minutos. El proceder se realizó bajo anestesia general con un período mínimo de bypass cardiopulmonar durante la atriotomía y liberación del trombo. Se utilizó monitorización intraoperatoria (IO) estandarizada de parámetros vitales y además ecocardiografía transesofágica para detección de embolismos y la remoción completa del trombo de la aurícula derecha. Conclusiones: La estrategia anestésica estuvo basada en la protección de las funciones renal, respiratoria, cardiovascular y cerebral. Durante el período intraoperatorio se tuvo especial cuidado para mantener cifras de pH y glicemias normales, así como euvolemia y normotermia.

The article discusses the results of a case report which examined a 14-year-old mix breed female dog with mix renal cell carcinoma observed during the necroscopic examination. Results showed that the dog's spleen and myocard have bilateral and metastasis tumours. A histological test revealed morphological features indicating mix renal carcinoma also known as renal adenocarcinoma, hypernephroma or Grawitz tumour.

Copyright of Revista Española de Cirugía Oral y Maxilofacial is the property of Sociedad Espanola de Cirugia Oral y Maxilofacial (SECOM) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background: Ductal cell carcinoma is an uncommon subtype of aggressive renal neoplasia arising from the medullary collecting ducts, which have been described in different countries and ethnic groups. Very few series of this tumor have been reported, and most publications in the medical literature deal with single cases. Patients and method: We present the clinicopathological findings of 10 cases collected during the last decade. The patients were 6 males and 4 females that ranged in age from 34 to 65 years (mean: 51.3 years). Hematuria, hidronephrosis, lumbar pain, renal lithiasis and weight loss were the main clinical symptoms related to the renal tumors. Four patients died due to the neoplasia, and in three of them widespread metastases were found in the postmortem examination. Results: Histologically, all the tumors showed a high Fuhrman nuclear-grade and were composed of a varied pattern of tubular, tubulopapillary, microcystic and trabecular epithelial cells growing in a desmoplastic stroma with mixed inflammation. Additionally in three tumors, we observed secretory metaplasia with signet ring cells, sarcomatoid changes and hyaline globules respectively. The tumor cells exhibited typical and consistent immunohistochemical positive staining with antibodies for cytokeratin 7, cytokeratin AE1/AE3 and Ulex europaeus lectin. Conclusions: Histopathological features together with the immunohistochemical staining for cytokeratin 7 and Ulex europaeus are in our view, the most important findings for the identification of renal ductal carcinoma that is an entity not yet well recognized by some clinicians and pathologists. [ABSTRACT FROM AUTHOR]

We have presented a case of an angiogenic renal tumor in a patient from a family with von Hippel Lindau' syndrome (VHL). The patient has bilateral clear cell carcinoma (CCC) .Molecular mechanisms recently discovered are described in order to require a better understanding of the development of this disease. The knowledge of these mechanisms, may allow to achieve better therapeutic approaches to neutralize the tumors of VHL disease. In this patient, an antiproliferative, antiangiogenic therapy was preferred. Rapamycin was chosen due to the lack of information regarding the use of antitumoral monoclonal antibodies in dialysis patients. VHL disease needs to be early detected, because many of its effects can be readily treated assuring a better survival for these patients. Antiangiogenic therapy can be used for CCC in this disease with promising results. [ABSTRACT FROM AUTHOR]

Copyright of Revista Española de Patología is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective: To present the initial experience on lumboscopic radical nephrectomy in our hospital. Materials and methods: We reviewed the clinical files of 18 patients who underwent a radical lumboscopic nephrectomy at Urology Service of the Hospital de Especialidades del Centro Médico Nacional Siglo XXI from October 2003 to October 2005. Results: In total, 18 patients underwent a lumboscopic radical nephrectomy. The mean operative time was 2 hours 50 min and transoperatory bleeding of 80 cc. In two cases was necessary to convert to open surgery for the completion of the procedure. There was no perioperative mortality. The hospital stay was 2.6 days, the 24 hour postoperative pain rate, measured by an analogous pain scale from 0 to 10 was 3.5. The mean tumoral diameter was 5.6 cm. The pathological study showed renal clear cell carcinoma in 17 cases and a sarcomatoid renal cell carcinoma in one patient. The final pathological stages of the patients with renal clear cell carcinoma, according to the TNM classification system were: T1, N0, M0 in 9 cases, T2, N0, M0 in 6 and T3a, N0, M0 in 2. Conclusions: The lumboscopic radical nephrectomy has several advantages over the open approach: less transoperatory bleeding, shorter hospital stay and lower analgesic requirement. Compared to the transperitoneal approach lumboscopy reduces the incidence of intra-abdominal complications. In our country, this is the first series of lumboscopic radical nephrectomy. A larger number of cases as well as a longer follow-up are necessary to precisely assess this surgical approach. [ABSTRACT FROM AUTHOR]

Laparoscopic radical nephrectomy has been introduced like a standard procedure in urology. The hand-assisted procedure gives the urologist a better tactile sensation; therefore, it makes the procedure easier and with a smaller learning curve. Materials and methods: We evaluated the use of laparoscopy in a man with a small tumor (3 cm) in the lateral portion of the right kidney. The characteristics of the patient, as well as the tumor size, were examined taking into account the easiness of the surgical dissection and its results. The CT scan was used to identify the tumor size. Results: A laparoscopic right radical nephrectomy without the necessity of converting to open was done to the patient. A 7 cm incision was made to place the left hand and the subsequent extraction of the kidney. The patient was 59 years old. Tumor size was 3 cm, located towards the lateral portion of the right kidney. Surgical time was 290 minutes. Blood loss was 350 cc Conclusions: The hand-assisted laparoscopic radical nephrectomy is a reproducible technique of minimally invasive surgery that shortens the learning curve for urologists, because they are familiarized with this kind of procedure. [ABSTRACT FROM AUTHOR]

Laparoscopic radical nephrectomy has gained acceptance since its introduction in 1991. It is considered nowadays as a good alternative for treating small tumors in most of the medical centers in the United States. Material and method: We report the first laparoscopic radical nephrectomy made in our hospital on a 48 year-old female with a small tumor (3 cm) in the right kidney found during follow-up of a breast cancer diagnosed and treated four years earlier. Patient characteristics and size of the tumor were examined and correlated with ease of surgical dissection and surgical outcome. Computed tomography was used to identify the tumor size. Result: The patient underwent successful laparoscopic radical nephrectomy without the need for an open conversion. We made a 7 cm incision for the extraction of the kidney at the level of lateral trocar. The size of the tumor was 3.0 cm located on the lower pole. The operative time was 340 minutes. The estimated blood loss was 250 cc. Conclusions: Laparoscopic radical nephrectomy is a reproducible technique of minimally invasive surgery that is a lengthy and demanding procedure today. [ABSTRACT FROM AUTHOR]

Se presenta el caso de un hombre de 59 años con diagnóstico de hipernefroma izquierdo y trombosis de la vena cava inferior con extensión hacia la aurícula derecha. Un equipo multidisciplinario realizó una nefrectomía radical izquierda, exposición de la vena cava inferior con técnica de piggyback, atriotomía derecha y cavotomía inferior para extracción del trombo, previo pinzamiento de la vena renal derecha y el hilio hepático. El tiempo quirúrgico total fue de 7 h 30 min. El procedimiento se realizó con anestesia general y un período mínimo de derivación cardiopulmonar. Se utilizó monitorización transoperatoria estandarizada de los parámetros vitales y además ecocardiografía transesofágica para la detección de la remoción completa del trombo y su extracción, así como posibles émbolos desprendidos. La evolución transoperatoria y posoperatoria fue satisfactoria. Se realiza una revisión de la literatura médica internacional sobre el tema y se ofrecen conclusiones.This is the male case aged 59 diagnosed with left hypernephroma and thrombosis of the inferior vena cava with extension to right atrium. A multidisciplinary staff performed a left radical nephrectomy, exposition of inferior vena cava using the piggyback technique, right atriotomy and inferior cavotomy for extension of thrombus and previous clamping of right renal vein and hepatic hilus. The total surgical time was of 7 hours and 30 minutes. The procedure was performed under general anesthesia and a minimal period of cardiopulmonary shunt. Standardized transoperative monitoring of vital parameters was used and also transesophageal echocardiography to detect the total removal of thrombus and its extraction, as well as the potential detached emboli. The transoperative and postoperative course was satisfactory. A review of the international medical literature on this subject was made offering conclusions.

Los párpados están constituidos por diferentes tipos de tejidos, de los cuales pueden desarrollarse diversos tipos histológicos de neoplasias. Se presentó un hombre de 70 años de edad, operado hace 5 años para extirparle un tumor renal, 2 años después, el tumor metastiza al cerebro. Posteriormente, el paciente es ingresado en este hospital y se le realizó exéresis al nivel del borde del párpado izquierdo para eliminar la ptosis mecánica que el tumor le producía y mejorar la visión. El estudio histológico informa un origen renal del tumor.Eyelids are formed by different types of tissue, from which may be developed many histological types of neoplasia. Authors present the case of a man aged 70, operated on five years ago to excise a renal tumor two years later which metastasizes the brain. Subsequently, patient is admitted in our hospital for exeresis at left eyelid level to eliminate mechanical ptosis provoked by tumor and to improve vision. Histological study reports a renal origin of tumor.

Al encarar los aspectos quirúrgicos del carcinoma renal elegimos los capítulos que a nuestro criterio despiertan mayor inquietud e interés tanto a urólogos como a cirujanos generales.