Hallazgos ecográficos de la glándula tiroides en el personal técnico ocupacionalmente expuesto y no expuesto a radiaciones ionizantes del Hospital Central Universitario Dr. Antonio María Pineda / Ultrasound findings of the thyroid gland in technical staff occupationally exposed and not exposed to ionizing radiations of the Hospital Central Universitario Dr. Antonio María Pineda

Con el objetivo de identificar hallazgos ecográficos en el parénquima tiroideo en el personal ocupacionalmente expuesto y no expuesto a radiación ionizante (RI) del Hospital Central Universitario Dr. Antonio María Pineda, se realizó un estudio descriptivo transversal con una muestra de 45 individuos expuestos a RI del Servicio de Radiología y Diagnóstico por Imágenes Dr. Theoscar Sanoja Hernández y 38 individuos de los Servicios de Traumatología y Ortopedia y Medicina Física y Rehabilitación que no están expuestos a RI obteniendo que el 63% del personal expuesto presentaron algún tipo de alteración en el ultrasonido tiroideo en comparación con el 43% del personal no ocupacionalmente expuesto; los hallazgos más frecuentes en el personal expuesto fueron bocio difuso (44%), nódulos (32%) y quistes (24%) mientras que en el personal no expuesto fueron quistes (38%), bocio difuso (19%) y nódulos (19%). Estos hallazgos permiten concluir que el porcentaje del personal con afectación de la glándula tiroides fue mayor en personal expuesto y que los hallazgos ecográficos difieren entre los grupos estudiados(AU)

In order to identify ultrasound findings in thyroid parenchyma of hospital staff exposed and not exposed to ionizing radiation (IR) of the Hospital Central Universitario Dr. Antonio Maria Pineda, we performed a cross-sectional descriptive study with a sample of 45 individuals exposed to IR who worked in the Servicio de Radiología y Diagnóstico por Imágenes Dr. Theoscar Sanoja Hernández and 38 individuals who worked at the Servicios de Traumatología y Ortopedia y Medicina Física y Rehabilitación and were not exposed. The results showed that 63% of the exposed group had ultrasound thyroid findings in contrast to 43% of the non-exposed group. The most common findings in the exposed group were diffuse goiter (44%), nodules (32%) and cysts (24%) and in the non-exposed group were cysts (38%), diffuse goiter (19%) y nodules (19%). These findings show that ultrasound thyroid findings was higher in exposed hospital staff and that the type of thyroid disease differ among both groups(AU)

Hemangiopericitoma primario de pulmon como hallazgo incidental. reporte de dos casos / Primary pulmonary hemangiopericytoma as an incidental finding. two case report

El hemangiopericitoma intra-pulmonar es una neoplasia poco frecuente, que se origina a partir de lo pericitos que rodean la membrana basal de capilares y vénulas dentro del parénquima pulmonar. Presentar dos casos clínicos como hallazgo incidental en su presentación conocer comportamiento y manejo de dicha neopla Paciente masculino 40 años cuadro clínico caracterizado por tos seca persistente, cansancio con dificultad para respirar con progresión a disnea rápida a pequeños esfuerzo y pérdida de peso. Paciente femenina de 37 años cuadro clínico caracterizado por dolor torácico tipo opresivo en región latero posterior de hemitórax erecho, con irradiación al hombro, radiografía de tórax póstero-anterior, se descubrió múltiples imágenes nodulares parenquimatosas bilaterales a nivel central y sub-pleural. Segundo paciente se realiza radiografía de tórax póstero-anterior se observa patrón de masa tumoral localizada en el centro del pulmón derecho, las cuales fueron confirmadas por tomografía computada de tórax. Se procedió a la recesión quirúrgica de dicha lesión para biopsia, mientras que en la paciente femenina la conducta fue más radical se practicó umonectomía derecha. Evolucionan satisfactoriamente. Reporte de biopsia y de inmunohistoquímica: emangiopericitoma primario de pulmón/tumor fibroso solitario. Ambos pacientes fueron referidos al servicio de oncología médica para terapia adyuvante.Tumor poco frecuente, su patogénesis es todavía desconocida y aunque es un tumor en apariencia y comportamiento benigno, debe tratarse como potencialmente maligno, se debe ser radical en el tratamiento y realizar un seguimiento cuidadoso, continuo y estricto del paciente(AU)

Intrapulmonary hemangiopericitoma potentially is a rare malignancy, which originates from the pericytes that surround the basal membrane of the capillaries and venules in lung parenchyma. The aim is to resent two cases as an incidental finding in its presentation and also know the behavior and management of this neoplasm. A male patient of 40 years with clinical picture haracterized by persistent dry cough, fatigue with shortness of breath with rapid progression to small effort dyspnea and weight loss and a female patient aged 37 clinical picture characterized by chest pain ppressive kind in lateral region posterior right chest, radiating to the shoulder in the chest film, multiple nodular parenchymal bilateral central and sub-pleural. The second patient so poster anterior chest radiograph where a pattern of tumor mass located in the center of the right lung, which was confirmed by computed tomography of the chest, is observed is performed. In the patient he proceeded to the surgical recession of the injury to biopsy, while in the female patient's behavior was more radical right neumonectomy was practical. They are evolving satisfactorily. Report biopsy and mmunohistochemistry for primary lung: Hemangiopericitoma / SFT. Both patients were referred to medical oncology service for adjuvant therapy. Is a rare tumor, its pathogenesis is still unknown and although a tumor in appearance and benign behavior, should be treated as malignant potential, must be radical in treatment and careful monitoring, continuous and strict patient(AU)

Liver biopsy may facilitate pancreatic graft evaluation: positive association between liver steatosis and pancreatic graft adipose infiltration

OBJECTIVES: The number of pancreatic transplants has decreased in recent years. Pancreatic grafts have been underutilized compared to other solid grafts. One cause of discard is the macroscopic appearance of the pancreas, especially the presence of fatty infiltration. The current research is aimed at understanding any graft-related association between fatty tissue infiltration of the pancreas and liver steatosis. METHODS: From August 2013 to August 2014, a prospective cross-sectional clinical study using data from 54 multiple deceased donor organs was performed. RESULTS: Micro- and macroscopic liver steatosis were significantly correlated with the donor body mass index ([BMI]; p=0.029 and p=0.006, respectively). Positive gamma associations between pancreatic and liver macroscopic and microscopic findings (0.98; confidence interval [CI]: 0.95-1 and 0.52; CI 0.04-1, respectively) were observed. Furthermore, comparisons of liver microscopy findings showed significant differences between severe versus absent (p<0.001), severe versus mild (p<0.001), and severe versus moderate classifications (p<0.001). The area under the receiver operating curve was 0.94 for the diagnosis of steatosis by BMI evaluation using a cut-off BMI of 27.5 kg/m2, which yielded 100% sensitivity, 87% specificity, and 100% negative predictive value. CONCLUSIONS: We observed a positive association of macroscopic and microscopic histopathological findings in steatotic livers with adipose infiltration of pancreatic grafts.

Histopathological analysis of the non - tumour parenchyma following radical nephrectomy: can it predict renal functional outcome?

ABSTRACT Introduction Radical nephrectomy (RN), a recommended treatment option for patients with Renal cell carcinoma (RCC) leads to an inevitable decline in global renal function. Pathological changes in the non-tumour parenchyma of the kidney may help predict the function of the remaining kidney. Materials and Methods Aim of this prospective, observational study was to find histopathological factors in the non-tumor renal parenchyma that could predict the decline in global renal function postoperatively and its association with co-morbidities like diabetes (DM). Data of consecutive patients undergoing RN from December-2013 to January-2015 was collected. Non-tumor parenchyma of the specimen was reported by a dedicated histopathologist. eGFR was calculated using Cockcroft-Gault formula before the surgery and at last follow up of at least 12 months. Results 73 RN specimens were analyzed. Mean follow up was 12.3 months. The mean decrease in eGFR was 22% (p=.0001). Percent decrease in eGFR did not show association with any of the histopathological parameters studied. DM was significantly associated with decrease in percent eGFR (p<0.05) and increase in arteriolar hyalinosis (p=0.004), Glomerulosclerosis (p=0.03) and Interstitial fibrosis/ Tubular atrophy (p=.0001). Maximum size of the tumor showed a negative correlation with percentage change in eGFR (p=.028). Conclusion Histological parameters in the non-tumour portion of the RN specimen may not be able to predict renal function outcome over a short follow up. However, presence of DM was associated with adverse pathological changes and significant decrease in renal function postoperatively.

Transection of the hepatic parenchyma associated or not with the contralateral portal vein branch ligature and its effect in liver regeneration / Efeito da transecção do parênquima hepático associada ou não à ligadura contralateral da veia porta na regeneração hepática

ABSTRACT Objective To analyze the influence of portal vein ligation in hepatic regeneration by immunohistochemical criteria. Methods Ten pigs divided into two groups of five animals underwent hepatectomy in two stages, and the groups were differentiated by ligation or not of the left portal vein tributary, which is responsible for vascularization of the left lateral and medial lobes of the pig liver. Five days after the procedure, the animals underwent liver biopsies for further analysis of histological and immunohistochemical with marker Ki67. Results The group submitted to hepatectomy with vascular ligation showed an increase of approximately 4% of hepatocytes in regeneration status, as well as a greater presence of Kupffer and inflammatory cells as compared to control. Conclusion As a result of positive cell replication observed through the Ki67 marker, we can suspect that the ligation of a tributary of the portal vein associated with liver resection promoted a greater stimulus of liver regeneration when compared to liver resection alone.

RESUMO Objetivo Analisar a influência da ligadura da tributária da veia porta no estímulo regenerativo hepático por meio de critérios imuno-histoquímicos. Métodos Dez suínos, divididos em dois grupos de cinco animais, foram submetidos à hepatectomia em dois estágios, sendo que os grupos foram diferenciados pela ligadura ou não da tributária da veia porta, responsável pela vascularização dos lobos lateral e medial esquerdos do fígado do suíno. Cinco dias após o procedimento, os animais foram reabordados para retirada de amostras hepáticas para posterior análise de histológica e imunoistoquímica com o marcador Ki67. Resultados O grupo submetido à hepatectomia com ligadura vascular apresentou incremento de 4% aproximadamente de hepatócitos em processo de regeneração, bem como grande número de células de Kupffer e células inflamatórias, quando comparado ao controle. Conclusão Em virtude da análise positiva da replicação celular observada por meio do marcador Ki67, pode-se observar que a ligadura de uma tributária da veia porta promoveu um maior estímulo de regeneração hepática, efeito observado com menor intensidade no grupo submetido apenas à ressecção hepática.

Open partial nephrectomy for entirely intraparenchymal tumors: a matched case-control study of oncologic outcome and complication rate

ABSTRACT Purpose To compare the oncologic and clinical outcomes for open partial nephrectomy (OPN) performed in patients with entirely intraparenchymal tumors versus case-matched controls, with exophytic lesions. Material and methods Patients having undergone OPN between 2007 and 2012 were investigated. Exclusion criteria included patients with a benign tumor, advanced malignancy, malignancies other than renal cell carcinoma, end-stage renal failure, or 3 or more co-existing chronic diseases. Individuals with tumors that were invisible at the renal surface were identified, and then matched with 2 controls chosen for tumor size, pathology, age, follow-up period, and presence of a solitary kidney. Oncological status, perioperative, and postoperative data were collected and compared between groups. Results 17 individuals with entirely endophytic RCC tumors and available oncologic status were identified. For five patients, only one suitable control could be identified, bringing the control group number to 29. All tumors were clear cell carcinomas staged at pT1a. Median tumor size was 25mm for endophytic lesions, and 27mm for exophytic masses (P=0.32). The operative period was extended by 20 minutes for intrarenal tumors (P=0.03), with one case of a positive surgical margin in each group (P=0.7). There were no significant differences in perioperative or postoperative complications. Median follow-up was 47 and 43 months for patients with endophytic and exophytic tumors respectively. Disease recurrence was recorded in one patient after endophytic tumor resection, and in four controls (P=0.4). Conclusions OPN shows equivalent safety and efficacy for both intrarenal RCC tumors and exophytic tumors of the same size and type.