Lesión diafragmática durante la laparoscopia urológica transperitoneal

Indexación: ScieloIntroduction: Capnothorax is a rare complication of urologic laparoscopy. However with the increasing use of this technique in a variety of urological procedures, this rare complication is a potential risk. Material and Methods: We analyzed a total of 786 urological procedures performed by transperitoneal laparoscopy in our center. All procedures were performed by the same surgeon: 213 adrenalectomy, 181 simple nephrec-tomies, 143 lymphadenectomies, 118 radical nephrectomies, 107 partial nephrectomies and 24 nephroure-terectomy. Results: A total of 6 patients (0.7%) present diaphragmatic lesions. The diaphragmatic repair was performed totally intracorporeal. One patient required the placement of a pleural drainage. No patient presented complications associated with diaphragmatic injury. Conclusion: Repair of diaphragmatic injury during transperitoneal laparoscopy can be performed successfully by this route. This technique is feasible, reproducible and reliable. This is the largest series reported by a single centerIntroducción: El capnotórax es una complicación infrecuente de la laparoscopía urológica. No obstante, con el uso cada vez mayor de esta técnica en una gran variedad de procedimientos urológicos, esta infrecuente complicación se presenta como un riesgo potencial. Material y Métodos: Se analizaron un total de 786 procedimientos urológicos realizados en forma laparoscópica por vía transperitoneal en nuestro centro. Todos los procedimientos fueron realizados por el mismo cirujano: 213 adrenalectomías, 181 nefrectomías simples, 143 linfadenectomías, 118 nefrectomías radicales, 107 nefrectomías parciales y 24 nefroureterectomías. Resultados: Un total de 6 pacientes (0,7%) presentaron lesiones diafragmáticas. La reparación diafragmática fue efectuada totalmente en forma intracorpórea. Un solo paciente requirió de la colocación de un drenaje pleural. Ningún paciente presentó complicaciones asociadas a la lesión diafragmática. Conclusión: La reparación de las lesiones diafragmáticas ocurridas durante la laparoscopía transperitoneal puede ser efectuada exitosamente por esta misma vía. Esta técnica es factible, reproducible y confiable. Esta es la serie más grande reportada por un solo centro.http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-40262010000300008&nrm=is

Human periprostatic adipose tissue: Secretome from patients with prostate cancer or benign prostate hyperplasia

Periprostatic adipose tissue (PPAT) directs tumour behaviour. Microenvironment secretome provides information related to its biology. This study was performed to identify secreted proteins by PPAT, from both prostate cancer and benign prostate hyperplasia (BPH) patients. Liquid chromatography-mass spectrometry-based proteomic analysis was performed in PPAT-conditioned media (CM) from patients with prostate cancer (CMs-T) (stage T3: CM-T3, stage T2: CM-T2) or benign disease (CM-BPH). The highest number and diversity of proteins was identified in CM-T3. Locomotion was the biological process mainly associated to CMs-T and reproduction to CM-T3. Immune responses were enriched in CMs-T. Extracellular matrix and structural proteins were associated to CMs-T. CM-T3 was enriched in proteins with catalytic activity and CM-T2 in proteins with defense/immunity activity. Metabolism and energy pathways were enriched in CM-T3 and those with immune system functions in CMs-T. Transport proteins were enriched in CM-T2 and CM-BPH. Proteins and pathways reported in this study could be useful to distinguish stages of disease and may become targets for novel therapies.Fil: Sacca, Paula Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Mazza, Osvaldo Néstor. Universidad de Buenos Aires. Facultad de Medicina. Hospital de Clínicas General San Martín; ArgentinaFil: Scorticati, Carlos. Universidad de Buenos Aires. Facultad de Medicina. Hospital de Clínicas General San Martín; ArgentinaFil: Vitagliano, Gonzalo. Hospital Aleman; ArgentinaFil: Casas, Gabriel. Hospital Aleman; ArgentinaFil: Calvo, Juan Carlos. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Biológica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentin

Tumor-Experienced Human NK Cells Express High Levels of PD-L1 and Inhibit CD8+ T Cell Proliferation

Natural Killer (NK) cells play a key role in cancer immunosurveillance. However, NK cells from cancer patients display an altered phenotype and impaired effector functions. In addition, evidence of a regulatory role for NK cells is emerging in diverse models of viral infection, transplantation, and autoimmunity. Here, we analyzed clear cell renal cell carcinoma (ccRCC) datasets from The Cancer Genome Atlas (TCGA) and observed that a higher expression of NK cell signature genes is associated with reduced survival. Analysis of fresh tumor samples from ccRCC patients unraveled the presence of a high frequency of tumor-infiltrating PD-L1+ NK cells, suggesting that these NK cells might exhibit immunoregulatory functions. In vitro, PD-L1 expression was induced on NK cells from healthy donors (HD) upon direct tumor cell recognition through NKG2D and was further up-regulated by monocyte-derived IL-18. Moreover, in vitro generated PD-L1hi NK cells displayed an activated phenotype and enhanced effector functions compared to PD-L1- NK cells, but simultaneously, they directly inhibited CD8+ T cell proliferation in a PD-L1-dependent manner. Our results suggest that tumors might drive the development of PD-L1-expressing NK cells that acquire immunoregulatory functions in humans. Hence, rational manipulation of these regulatory cells emerges as a possibility that may lead to improved anti-tumor immunity in cancer patients.Fil: Sierra, Jessica Mariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Secchiari, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Nuñez, Sol Yanel. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Raffo Iraolagoitia, Ximena Lucía. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Ziblat, Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Friedrich, Adrián David. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentina. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Cátedra de Inmunología; ArgentinaFil: Regge, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Santilli, Maria Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Torres, Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Gantov, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Trotta, Aldana. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Ameri, Carlos Enrique. Hospital Alemán; ArgentinaFil: Vitagliano, Gonzalo. Hospital Alemán; ArgentinaFil: Ríos Pita, Hernando. Hospital Alemán; ArgentinaFil: Rico, Luis. Hospital Alemán; ArgentinaFil: Rovegno, Agustín. Centro de Educaciones Médicas e Investigación Clínica "Norberto Quirno"; ArgentinaFil: Richards, Nicolás. Centro de Educaciones Médicas e Investigación Clínica "Norberto Quirno"; ArgentinaFil: Domaica, Carolina Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Zwirner, Norberto Walter. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Química Biológica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Fuertes, Mercedes Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentin

Laparoscopic partial cystectomy in the management of bladder endometriosis: Report of two cases

Endometriosis is the proliferation of endometrial tissue outside the normal confines of the myometrium or uterine cavity. Endometriosis involving the urinary tract occurs in approximately 1% to 2% of cases. The bladder is affected in 80% of these patients. The diagnosis of vesical endometriosis is difficult, and it should be confirmed by cystoscopy with biopsy. Laparoscopic examination represents the gold standard for the diagnosis of pelvic endometriosis. Urinary bladder endometriosis may be treated surgically or medically with hormone-suppressive therapy. However, medical treatments usually are only palliative, and symptoms generally recur on discontinuation. We report our experience in two patients with vesical endometriosis who were managed successfully with cystoscopy-assisted laparoscopic partial cystectomy. © Mary Ann Liebert, Inc

Management of rectal injury during laparoscopic radical prostatectomy

Purpose: Because laparoscopic radical prostatectomy remains a challenging procedure, rectal injury is always a potential complication. We review the incidence of rectal injuries at our institution in the first 110 consecutive laparoscopic extraperitoneal radical prostatectomies. Materials and Methods: Nine (8%) out of the first 110 laparoscopic extraperitoneal radical prostatectomies performed between December 2001 and February 2004, were complicated by rectal injury. Mean patient age was 64.9 years (range 52 to 74) and mean prostate specific antigen was 11.45 ng/mL (range 4.8 to 37.4). Median preoperative Gleason score was 6 (range 4 to 8) and clinical stage was T1c, T2a, T2b in 6, 2 and 1 patient, respectively. Mean operative time was 228 minutes (range 150 to 300). Results: From 9 injuries, 6 were diagnosed and repaired intraoperatively and 3 were diagnosed postoperatively. From the 6 cases of intraoperative diagnosis and repair, 3 patients healed primarily without colostomy and a

Laparoscopic radical cystectomy. The new gold standard for bladder carcinoma? ¿es la osteotomía radical laparoscópica el nuevo standard de oro para el cáncer de vejiga?

OBJECTIVES: The experience of a renowned Latin American laparoscopic center is reported and the differences with the open technique are thoroughly discussed. METHODS: During a 7 year period a total of 85 laparoscopic cystectomies were performed, in 92% urinary diversion was performed extracorporeally. This accounted for: 14 anterior exenterations, 50 radical cystoprostatectomies, 7 radical cystectomies and 14 simple cystectomies. Male to female ratio was 3:1. Mean patient age was 63 years (range 29 to 83). Mean Body Mass Index (BMI) was 28 kg/m2 (range 20 to 47). Operative data and long term results are analyzed. RESULTS: All 85 procedures were completed laparoscopically without the need for conversion to open surgery. Orthotopic neobladder, Santiago pouch, Studer, Fontana and Le Bag were performed in 42, 13, 16, 12 and 1 case respectively. Ileal conduit, Indiana pouch and Mainz II were employed in 24, 10 and 9 cases respectively. All Mainz II were performed intracorporeally Mean oper

Diaphragmatic injury during transperitoneal urological laparoscopic surgery Lesión diafragmática durante la laparoscopia urológica transperitoneal

Introduction: Capnothorax is a rare complication of urologic laparoscopy. However with the increasing use of this technique in a variety of urological procedures, this rare complication is a potential risk. Material and Methods: We analyzed a total of 786 urological procedures performed by transperitoneal laparoscopy in our center. All procedures were performed by the same surgeon: 213 adrenalectomy, 181 simple nephrectomies, 143 lymphadenectomies, 118 radical nephrectomies, 107 partial nephrectomies and 24 nephroureterectomy. Results: A total of 6 patients (0.7%) present diaphragmatic lesions. The diaphragmatic repair was performed totally intracorporeal. One patient required the placement of a pleural drainage. No patient presented complications associated with diaphragmatic injury. Conclusion: Repair of diaphragmatic injury during transperitoneal laparoscopy can be performed successfully by this route. This technique is feasible, reproducible and reliable. This is the largest serie