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1.
Curr Urol Rep ; 21(1): 4, 2020 Jan 18.
Artigo em Inglês | MEDLINE | ID: mdl-31960160

RESUMO

PURPOSE OF REVIEW: This review provides a critical literature overview of the risks and benefits of transplantectomy in patients with a failed allograft. Additionally, it offers a summary of related problems, primarily alloantibody sensitization in the event of nephrectomy and immunosuppression weaning. RECENT FINDINGS: Transplant nephrectomy has high morbidity and mortality rates. The morbidity of transplant nephrectomy (4.3 to 82%) is mostly due to hemorrhage or infection. Mortality rates range from 1.2 to 39%, and most are due to sepsis. Transvascular graft embolization has been described as a less invasive alternative technique for the management of symptomatic graft rejection, with minimal complications compared with transplantectomy. The number of patients with a failed allograft returning to dialysis is increasing. The role of allograft nephrectomy in the management of asymptomatic transplant failure is still controversial and up today continues to depend on the usual clinical practice of each institution. The less invasive transvascular embolization could have applicability in asymptomatic patients with the obvious lower morbidity and mortality rate.


Assuntos
Rejeição de Enxerto/cirurgia , Transplante de Rim/efeitos adversos , Nefrectomia/métodos , Transplantes/cirurgia , Aloenxertos/cirurgia , Rejeição de Enxerto/etiologia , Humanos
2.
Vasc Endovascular Surg ; 54(1): 51-57, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31601161

RESUMO

BACKGROUND: Abdominal aortic aneurysm (AAA) repair in patients with organ transplant remains a challenge. We looked at AAA repair in patients with organ transplants at our tertiary liver and kidney transplant unit. METHODS: A retrospective analysis of a prospectively maintained database was undertaken from January 2008 to July 2018. We looked at patient demographics, type of repair, and technical success including reinterventions, perioperative transplant organ function, and 30-day and 1-year survival rate. Eight of 662 patients who underwent AAA repair had a solid organ transplant. Of these, 5 were kidney transplants, 2 liver transplants, and 1 had kidney and liver transplant; 75% were male; and average age was 63.4 (range: 49-83). All patients had asymptomatic AAAs, and 6 were treated with standard endovascular repair, 1 standard repair with iliac branch device, and 1 open repair. Adjunctive techniques such as CO2 angiograms, deployment of main body through contralateral iliac, low-profile sheaths, custom-made stent grafts, and temporary axillo-femoral shunting were used to protect transplant organs. Thirty-day survival was 100% with 1 death at 5 months from liver failure, and 1 patient has a persistent type-2 endoleak 3 years after the procedure. CONCLUSION: Abdominal aortic aneurysm repair in patients with organ transplants can be undertaken using adjunctive endovascular and open surgical techniques.


Assuntos
Aneurisma da Aorta Abdominal/cirurgia , Implante de Prótese Vascular , Procedimentos Endovasculares , Transplante de Rim , Transplante de Fígado , Idoso , Idoso de 80 Anos ou mais , Aneurisma da Aorta Abdominal/diagnóstico por imagem , Implante de Prótese Vascular/efeitos adversos , Bases de Dados Factuais , Procedimentos Endovasculares/efeitos adversos , Inglaterra , Feminino , Humanos , Transplante de Rim/efeitos adversos , Transplante de Fígado/efeitos adversos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/etiologia , Estudos Retrospectivos , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento
3.
Beijing Da Xue Xue Bao Yi Xue Ban ; 51(6): 1155-1158, 2019 Dec 18.
Artigo em Chinês | MEDLINE | ID: mdl-31848521

RESUMO

OBJECTIVE: To evaluate the safety and efficacy of endoscopic treatment for ureterovesical junction (UVJ) stenosis in patients with kidney transplantation. METHODS: A retrospective study was conducted among the patients with kidney transplantation diagnosed as UVJ stenosis from 2012 March to 2018 July in Urology and Lithotripsy Center, Peking University People's Hospital. Only the patients who received endoscopic treatment were included, with staged or same-session nephrostomy followed by a retrograde ureteroscopy to evaluate the ureteral stenosis. Incisions with laser, mono- or bipolar energy, or balloon dilation were used to manage the stenosis depending on different situations. Demographic characteristics and clinical data were gathered and analyzed, including age, gender, preoperative serum creatinine, hemoglobin, operation time, success rate, postoperative serum creatinine, hemoglobin, postoperative complications rate, and long-term stenosis recurrence rate. RESULTS: In this study, 13 patients were included (9 males and 4 females). All the UVJ stenoses were diagnosed with preoperative ultrasound, CT scan, MRI, or urethrography. The mean age was 45 years (range 34-57 years). The mean preoperative serum creatinine was 243 µmol/L. Four patients developed UVJ stenosis 1 month after kidney transplantation, while the rest developed long-term stenosis. Fifteen operations were performed in all, of which 14 cases were successful while one failed. The first 8 cases received first-stage nephrostomy and second-stage endoscopic management of the stenosis, while the last 7 cases received the same session surgery. The mean operation time was 95.4 min vs. 68.9 min, and the immediate success rate was 87.5% vs. 100.0% in the first 8 cases and last 7 cases, respectively. The mean decrease of postoperative hemoglobin was 0.6 g/L and mean postoperative serum creatinine was 105 µmol/L. No postoperative fever, severe hematuria, and urine leak were observed. The mean postoperative hospital stay was 2.8 days. Three patients were able to remove ureteral stents and no recurrence was found with a follow-up time of 9, 17, and 82 months. The long-term stenosis recurrence rate was 76.9% (10/13). CONCLUSION: Endoscopic approach for the treatment of UVJ stenosis in patients with kidney transplantation was safe and efficient in our study cohort. However, long term stenosis recurrence rate was high and needed to be paid attention to.


Assuntos
Transplante de Rim , Obstrução Ureteral , Adulto , Feminino , Humanos , Transplante de Rim/efeitos adversos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Resultado do Tratamento , Obstrução Ureteral/etiologia , Ureteroscopia
4.
Autops. Case Rep ; 9(4): e2019112, Oct.-Dec. 2019. ilus, tab
Artigo em Inglês | LILACS | ID: biblio-1024207

RESUMO

Renal transplant patients are treated with immunosuppressive drugs that decrease the effectiveness of the immune system, making them more prone to developing cancer. Skin and lip carcinomas are common malignancies encountered after transplantation, whereas oral carcinomas are rare. We report the case of a 51-year-old female Caucasian patient, with no history of smoking, who presented white lesions on the tongue and an ulcerated lesion on the lower lip beginning 4 months prior. Diagnosis of squamous cell carcinoma for both lesions was made following incisional biopsies. Interestingly, the patient reported a renal transplantation 23 years prior, and was maintained on a combination of cyclosporine, mycophenolate sodium and prednisone. The patient also presented a history of several basal and squamous cell carcinomas on sun-exposed areas of the skin. Both lesions were surgically excised. No sign of recurrence or new lesions in the oral cavity have been observed; however, new skin lesions are frequently diagnosed. This case report highlights that oral cancers may occur in transplant patients in the absence of classical risk factors. Thus, clinicians must be aware of the importance of thorough oral examination in transplant patients in routine follow-up.


Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Neoplasias Bucais/etiologia , Neoplasias Bucais/patologia , Neoplasias Bucais/prevenção & controle , Carcinoma de Células Escamosas/patologia , Transplante de Rim/efeitos adversos , Imunossupressores/efeitos adversos
5.
Transplant Proc ; 51(9): 2936-2938, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31711578

RESUMO

BACKGROUND: BK virus (BKV) infection represents a potentially dreadful complication after kidney transplantation (KT). When BK viremia is detected, the best therapeutic approach remains not entirely clarified. Critical elements of BK viremia treatment are immunosuppression minimization and introduction of drugs like leflunomide, everolimus, and fluoroquinolones. The study aimed to analyze the results of the BK viremia management in 2 collaborative Italian centers. METHODS: Ten patients undergoing KT in the 2 collaborative Italian centers of Sapienza University of Rome and University of L'Aquila from January 2013 to December 2017 and showing a post-KT diagnosis of BK viremia were retrospectively investigated. RESULTS: Mean time from KT to BKV positivity was 7 months (range: 1-19 months). At diagnosis, the mean viral load was 683,842 copies/mL (range: 5800-4,052,415 copies/mL), with an average zenith of 2,428,410 copies/mL (range: 6762-18,022,500 copies/mL). In the 5 patients with BKV nephropathy, we observed a switch from antimetabolite to leflunomide (n = 5), a switch from tacrolimus to everolimus (n = 3), or an introduction of fluoroquinolones (n = 3). BKV clearance was achieved in 3 patients. CONCLUSIONS: Early BKV diagnosis and stepwise minimization of immunosuppression remain the first-line approach in patients with BK viremia. In the presence of BKV nephropathy, a combination of antiviral drugs like leflunomide and fluoroquinolones/everolimus should favor viremia clearance.


Assuntos
Transplante de Rim , Infecções por Polyomavirus/complicações , Infecções por Polyomavirus/imunologia , Infecções Tumorais por Vírus/complicações , Infecções Tumorais por Vírus/imunologia , Adulto , Antivirais/uso terapêutico , Vírus BK , Feminino , Humanos , Imunossupressão/métodos , Imunossupressores/efeitos adversos , Transplante de Rim/efeitos adversos , Masculino , Pessoa de Meia-Idade , Infecções por Polyomavirus/tratamento farmacológico , Estudos Retrospectivos , Infecções Tumorais por Vírus/tratamento farmacológico , Viremia/complicações , Viremia/tratamento farmacológico , Viremia/imunologia
6.
BMC Infect Dis ; 19(1): 974, 2019 Nov 19.
Artigo em Inglês | MEDLINE | ID: mdl-31744480

RESUMO

BACKGROUND: Adjustment of immunosuppression is the main therapy for BK polyomavirus (BKPyV)-associated nephropathy (BKPyVAN) after kidney transplantation (KT). Studies of BKPyV-specific T cell immune response are scarce. Here, we investigated BKPyV-specific T cell immunity in KT recipients diagnosed with BKPyVAN. METHODS: All adult KT recipients with BKPyVAN diagnosed at our institution from January 2017 to April 2018 were included. Laboratory-developed intracellular cytokine assays measuring the percentage of IFN-γ-producing CD4+ and CD8+ T cells, after stimulation with large-T antigen (LT) and viral capsid protein 1 (VP1), were performed both at the time of diagnosis and after adjustment of immunosuppression. RESULTS: We included 12 KT recipients diagnosed with BKPyVAN (7 proven, 4 presumptive, and 1 possible). Those with presumptive BKPyVAN had a median plasma BKPyV DNA load of 5.9 log10 copies/ml (interquartile range [IQR]: 4.9-6.1). Adjusted dosing of mycophenolic acid and tacrolimus with (86%) or without (14%) adjunctive therapies were implemented after diagnosis. There was a significantly higher median percentage of IFN-γ-producing CD4+ T cells to LT at a median of 3 (IQR: 1-4) months after adjustment of immunosuppression compared with at the time of diagnosis (0.004 vs. 0.015; p = 0.047). However, the difference between the median percentage of IFN-γ-producing CD4+ T cells to VP1 and CD8+ T cells to LT and VP1 did not reach statistical significance. Four (33%) patients achieved plasma BKPyV DNA clearance, and the remaining eight (67%) patients had persistent BKPyV DNAemia. Although eight (67%) patients developed allograft dysfunction, none required hemodialysis. CONCLUSIONS: We observed a marginal trend of BKPyV-specific CD4+ T cell recovery after adjustment of immunosuppression in KT recipients diagnosed with BKPyVAN. A further study would be benefited to confirm and better assess BKPyV-specific immune response after KT.


Assuntos
Vírus BK/imunologia , Linfócitos T CD8-Positivos/imunologia , Transplante de Rim/efeitos adversos , Nefrite Intersticial/diagnóstico , Infecções por Polyomavirus/diagnóstico , Adulto , Vírus BK/genética , Vírus BK/isolamento & purificação , Linfócitos T CD4-Positivos/imunologia , Linfócitos T CD4-Positivos/metabolismo , Linfócitos T CD8-Positivos/metabolismo , DNA Viral/sangue , Feminino , Rejeição de Enxerto/prevenção & controle , Humanos , Imunossupressores/uso terapêutico , Interferon gama/metabolismo , Masculino , Pessoa de Meia-Idade , Nefrite Intersticial/etiologia , Nefrite Intersticial/virologia , Infecções por Polyomavirus/etiologia , Infecções por Polyomavirus/virologia , Tacrolimo/uso terapêutico , Transplante Homólogo , Proteínas Virais/imunologia
7.
Medicine (Baltimore) ; 98(45): e17878, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31702658

RESUMO

RATIONALE: Donor-derived bacterial infection is a rare cause of morbidity after solid organ transplantation (SOT) but associated with significant morbidity and mortality, deaths caused by carbapenem-resistant Klebsiella pneumoniae (CRKP) infection account for a considerable proportion of postoperation mortality rate in liver and kidney recipients. The arterial rupture as a result of fungal arteritis is occasionally described, while the rupture of graft vascular anastomosis after SOT due to donor-derived CRKP infection is rarely reported. PATIENTS CONCERNS: We reported 1 patient with donor-derived CRKP infection following liver transplantation and 2 patients following renal transplantation (1 liver and 2 kidneys were from the same donor), who experienced sudden abdominal pain and abdominal hemorrhage almost at the same time after organ transplantation. DIAGNOSIS: The patients were diagnosed as graft arteries rupture due to corrosion caused by CRKP infection based on computed tomography scan, blood culture, laparotomy, and pulse-field gel electrophoresis. INTERVENTIONS: Anti-shock treatment, exploratory laparotomy, broad-spectrum antibiotics, and abdominal puncture and drainage were given. OUTCOMES: The liver recipient survived as well as the liver graft, still under treatment of multiple abdominal infections. The 2 renal recipients were alive after resection of the renal grafts and underwent hemodialysis. LESSONS: Rupture of graft artery should be foreseen when donor-derived CRKP infection was confirmed and broad-spectrum antibiotics and other interventions need to be considered.


Assuntos
Transplante de Rim/efeitos adversos , Infecções por Klebsiella/etiologia , Transplante de Fígado/efeitos adversos , Adulto , Antibacterianos , Enterobacteriáceas Resistentes a Carbapenêmicos/isolamento & purificação , Feminino , Artéria Hepática/diagnóstico por imagem , Humanos , Infecções por Klebsiella/tratamento farmacológico , Klebsiella pneumoniae/isolamento & purificação , Masculino , Pessoa de Meia-Idade , Artéria Renal/diagnóstico por imagem , Ruptura/etiologia , Doadores de Tecidos
8.
Transplant Proc ; 51(9): 3084-3086, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31627914

RESUMO

A 72-year-old man with a past medical history notable for deceased renal transplant presented to the interventional radiology department for routine right lower quadrant renal transplant nephroureteral catheter exchange. The nephroureteral catheter was placed in 2016 because of the presence of a hematoma causing partial page kidney and hydronephrosis. An antegrade nephrostogram was notable for opacification of the small bowel instead of the renal collecting system. The patient then subsequently developed urinary retention and intractable abdominal pain. Because of the combination of events, it was deemed necessary for laparotomy and surgical repair of the small bowel. Intraoperative findings were notable for small bowel adhesion to the abdominal wall but otherwise no evidence of acute inflammatory changes. In this case report, we describe the first case of an idiopathically dislodged nephrostomy catheter to the small bowel from a transplanted kidney and its successful management.


Assuntos
Migração de Corpo Estranho , Intestino Delgado/patologia , Transplante de Rim/efeitos adversos , Nefrostomia Percutânea/efeitos adversos , Cateteres Urinários/efeitos adversos , Idoso , Migração de Corpo Estranho/patologia , Migração de Corpo Estranho/cirurgia , Hematoma/etiologia , Hematoma/cirurgia , Humanos , Hidronefrose/etiologia , Hidronefrose/cirurgia , Masculino , Nefrostomia Percutânea/instrumentação
9.
Transplant Proc ; 51(9): 2921-2926, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31627917

RESUMO

BACKGROUND: With the aging of recipients of renal transplantation (RT) one of the emerging issues is the incidence of low urinary tract symptoms (LUTS), which may have negative consequences on the graft survival and function. The aim of our study was to assess the influence of LUTS and the treatment with transurethral resection of the prostate (TURP) on the outcome of RT. MATERIALS AND METHODS: We collected data from men over 55 who underwent RT at our center from January 2007 to December 2016. We analyzed the incidence of LUTS; the rate of treatment with TURP; the eGFR (estimated glomerular filtration rate) at 6 months and 1, 3, and 5 years from transplantation; and graft survival. RESULTS: Fifty-five patients out of 268 experienced LUTS, and 19 of them had a bladder outlet obstruction (BOO). Patients experiencing BOO had a significantly higher hazard ratio (HR) of graft failure (HR 5.7, CI 1.56-21.4) compared to the other recipients. Of the 18 patients treated with TURP, 10 received the procedure within 6 months from the LUTS onset. They had a significantly absolute eGFR improvement at 6 months from the intervention (+14.25 mL/min ± 8.10) compared to the patients treated later (-8.4 mL/min ± 14.43). DISCUSSION: We showed the negative effects of LUTS on kidney graft function and survival. Although TURP is the standard therapy for such an issue, the best timing for it still has to be defined. Our experience supports the need for an early treatment of the LUTS for promoting the outcome of the RT.


Assuntos
Transplante de Rim , Hiperplasia Prostática/complicações , Hiperplasia Prostática/cirurgia , Ressecção Transuretral da Próstata , Idoso , Sobrevivência de Enxerto , Humanos , Transplante de Rim/efeitos adversos , Sintomas do Trato Urinário Inferior/epidemiologia , Sintomas do Trato Urinário Inferior/etiologia , Sintomas do Trato Urinário Inferior/cirurgia , Masculino , Pessoa de Meia-Idade , Hiperplasia Prostática/epidemiologia , Obstrução do Colo da Bexiga Urinária/epidemiologia , Obstrução do Colo da Bexiga Urinária/etiologia , Obstrução do Colo da Bexiga Urinária/cirurgia
10.
Transplant Proc ; 51(9): 3080-3083, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31627919

RESUMO

As the field of transplant evolves and patients with chronic disease live longer, retransplant for end-stage renal disease becomes more common because kidney allografts have a limited lifespan. In renal retransplant, graft and patient survival is near equivalent to first-time transplant; however, these procedures present a unique surgical risk profile, especially third and subsequent transplants, which are reviewed in this manuscript. The risk of bowel obstruction in primary kidney transplant recipients is much lower than patients who have undergone laparotomy for second or third transplant because of the retroperitoneal location of the transplanted kidney. Internal hernia is an uncommon cause of small bowel obstruction, particularly after kidney transplant, and often diagnosis and intervention are delayed because of diagnostic uncertainty. We report a case of a 34-year-old man with acute kidney injury and bowel obstruction, whose final diagnosis was an internal hernia around the transplanted ureter of an intra-abdominally placed third renal transplant resulting in ureteric obstruction associated with small bowel obstruction-a case of double obstruction.


Assuntos
Obstrução Intestinal/etiologia , Transplante de Rim/efeitos adversos , Reoperação/efeitos adversos , Obstrução Ureteral/etiologia , Adulto , Humanos , Falência Renal Crônica/cirurgia , Masculino
11.
Transplant Proc ; 51(9): 3092-3098, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31623898

RESUMO

Gastrointestinal bleeding after kidney transplantation is a complication that can occur from immunosuppressant use. We present a case of refractory small bowel bleeding treated successfully with thalidomide after multiple failed attempts of conventional treatment. A 65-year-old male patient with diabetic nephropathy underwent living donor kidney transplantation. The surgery was uneventful, however, he developed immunosuppressant-induced melena with unstable vital signs 11 days later. There were a total of 4 bleeding episodes until the 90th postoperative day, and he received a total of 290 units of red blood cell transfusion during this period. Endoscopic clipping, transarterial embolization, and 2 surgical interventions failed to stop the bleeding. A trial of thalidomide 100 mg per day finally stopped the bleeding and the patient was discharged on the 110th postoperative day with a functioning renal graft. This case shows that thalidomide can be a safe option to treat immunosuppressant-induced refractory gastrointestinal bleeding in the setting of kidney transplantation. Additionally, this is the first case that reports the survival of a renal graft after more than 3000 mL of transfusion.


Assuntos
Inibidores da Angiogênese/uso terapêutico , Hemorragia Gastrointestinal/tratamento farmacológico , Transplante de Rim/efeitos adversos , Complicações Pós-Operatórias/tratamento farmacológico , Talidomida/uso terapêutico , Idoso , Humanos , Imunossupressores/efeitos adversos , Doadores Vivos , Masculino , Melena/imunologia , Pessoa de Meia-Idade , Complicações Pós-Operatórias/etiologia , Tacrolimo/efeitos adversos
12.
Transplant Proc ; 51(9): 2927-2930, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31607617

RESUMO

BACKGROUND: Malignancy is an important cause of mortality in renal transplants recipients. The aim of this study was to evaluate the incidence, prognosis, and survival of patients developing a de novo post-transplant cancer. METHODS: Using a retrospective cohort design, we evaluated the incidence of de novo cancers among kidney transplants patients in our hospital from January 2000 to December 2012. We also evaluated the patient survival after tumor diagnosis. RESULTS: We included 535 kidney transplants recipients with a mean follow-up of 7.8 years; among them, 39 (7.2%) developed malignancies. Median time from transplant to cancer diagnosis was 3 years, with a median age at diagnosis of 60 years. Male patients were significantly older at time of cancer diagnosis (68.5 years) compared with women (38 years, P < .05), and cancer diagnosis occurred significantly earlier in men (3.5 years since transplantation) than in women (8.5 years, P < .05). Among 39 patients affected by a de novo post-transplant cancer, 18 patients (46.2%) died, with an average age at death of 58.5 years. The average time from cancer diagnosis to death was 1.5 years. Among the group of patients who did not develop a post-transplant cancer, 83 patients (16.7%) died, with a median age at time of death of 54.5 years (P < .05). CONCLUSIONS: Kidney transplant recipients are at higher risk of developing a post-transplant cancer. Prognosis after cancer diagnosis is poor, probably as a consequence of a more aggressive behavior of cancer in transplant recipients. Intensive screening protocols could allow for an earlier diagnosis thereby improving the long-term outcome of these patients.


Assuntos
Hospedeiro Imunocomprometido , Transplante de Rim , Neoplasias/epidemiologia , Neoplasias/imunologia , Adulto , Estudos de Coortes , Feminino , Humanos , Incidência , Transplante de Rim/efeitos adversos , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos
13.
Transplant Proc ; 51(9): 2995-2997, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31607619

RESUMO

Incidence of malignant tumors in kidney transplant recipients is higher than nontransplanted population due to many factors, such as immunosuppression therapy and complex donor-recipient interaction. Genitourinary malignancies have been reported as the second most common malignancy in kidney transplant recipients. In this regard, prostate cancer is the most common neoplasm. Herein, we describe a rare case of prostate cancer recurrence after 15 years in a patient who underwent kidney transplant after radical prostatectomy.


Assuntos
Hospedeiro Imunocomprometido , Imunossupressão/efeitos adversos , Transplante de Rim/efeitos adversos , Recidiva Local de Neoplasia/imunologia , Neoplasias da Próstata/imunologia , Idoso , Humanos , Falência Renal Crônica/complicações , Falência Renal Crônica/cirurgia , Masculino , Prostatectomia , Neoplasias da Próstata/complicações
14.
Transplant Proc ; 51(9): 2939-2942, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31607625

RESUMO

BACKGROUND: Vascular complications are the main cause of early graft loss in renal transplant (RT). A graft with multiple vessels represents the most validated risk factor. The aim of the present study was to identify potential predictive factors for acute vascular complications causing graft loss when graft vascular anomalies are excluded. METHODS: This is a retrospective case-control (1:3 ratio) study extrapolated from the RT series of the Renal Transplant Unit - Udine University Hospital, during the period 1993-2017. Grafts with multiple vessels and retransplant cases were excluded. RESULTS: The overall prevalence of graft loss due to acute vascular complications was 2.6% (25/961). Seventeen complicated recipients had grafts without vascular anomalies (case group). The median time between RT and complication was 6 days (interquartile range, 4-23 days). The following types of vascular complications were recorded: 5 isolated renal artery thromboses (0.5%), 4 isolated renal vein thromboses (0.4%), 4 combined renal artery and vein thromboses (0.3%), 3 renal artery ruptures due to mycotic arteritis (0.3%), and 1 renal artery nonmycotic pseudoaneurysm (0.1%). No differences were recorded between the groups in terms of donors and grafts characteristics. Complicated recipients showed a statistically higher prevalence of thromboembolism history (P = .046) and vascular atherosclerosis (P = .048). During the postoperative course, blood stream infections (P = .02), acute rejection (P = .03), bleeding from a nonmacrovascular source (P = .04), and multiple reintervention because of nonvascular complications (P = .03) were identified as significant risk factors. CONCLUSIONS: Recipient characteristics and post-RT complications rather than donor and graft characteristics are relevant risk factors for graft loss due to acute vascular complications when graft vascular anomalies are excluded.


Assuntos
Sobrevivência de Enxerto/fisiologia , Transplante de Rim , Complicações Pós-Operatórias/etiologia , Doenças Vasculares/etiologia , Adulto , Estudos de Casos e Controles , Feminino , Humanos , Transplante de Rim/efeitos adversos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/epidemiologia , Prevalência , Estudos Retrospectivos , Fatores de Risco , Doenças Vasculares/epidemiologia
15.
Rev Med Liege ; 74(10): 521-526, 2019 Oct.
Artigo em Francês | MEDLINE | ID: mdl-31609555

RESUMO

The role of medical imaging is of major impor¬tance in the follow-up of patients with kidney transplant.There as many and various renal transplant complications. The development of techniques in medical imaging, especially the progression of clinical and biological monitoring improve their detection. In this article, we will remind the diverses complications of renal transplant and their expression in the various imaging modalities, including Doppler ultrasound which remains the principal examination modality.


Assuntos
Nefropatias , Transplante de Rim , Angiografia , Humanos , Nefropatias/cirurgia , Transplante de Rim/efeitos adversos , Complicações Pós-Operatórias , Ultrassonografia
17.
Transplant Proc ; 51(9): 3087-3091, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31611114

RESUMO

Fungus account for ∼ 5% of all cases infections following solid organ transplant. Fungal infections in the setting of immunosuppression may progress rapidly and present in an atypical pattern. Herein we describe 4 cases of environmental fungal infections acquired decades prior to transplant that developed into localized atypical cutaneous masses following kidney transplant.


Assuntos
Hospedeiro Imunocomprometido , Transplante de Rim/efeitos adversos , Micoses/imunologia , Dermatopatias/imunologia , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade
18.
Transplant Proc ; 51(9): 3070-3071, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31611119

RESUMO

There is limited data on multiple primary malignancies in the kidney transplant population. Gastrointestinal stromal tumors (GISTs) are rare tumors in kidney transplant recipients, with only 5 cases reported in the literature to date. GIST patients are at an increased risk for developing additional malignancies, with other histologic types of gastrointestinal tract malignancies being the most frequent and other types of malignancies rare. There is evidence in the literature suggesting an association between GIST and renal cell carcinomas. We report on the first case of a GIST and a renal cell carcinoma in a kidney transplant recipient and in other solid organ transplant recipients.


Assuntos
Carcinoma de Células Renais/patologia , Tumores do Estroma Gastrointestinal/patologia , Neoplasias Renais/patologia , Transplante de Rim/efeitos adversos , Neoplasias Primárias Múltiplas/patologia , Idoso , Humanos , Masculino
19.
Medicine (Baltimore) ; 98(38): e17312, 2019 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-31568017

RESUMO

Kidney transplantation (KT) is the best therapy available for patients with end-stage renal disease, but postoperative infections are a significant cause of mortality.In this retrospective study the frequency, risk factors, causative pathogens, and clinical manifestations of infection in KT recipients from Beijing Chao-Yang Hospital, Capital Medical University were investigated. Ninety-seven KT recipients who were hospitalized with infection between January 2010 and December 2016 were included. Clinical characteristics, surgery details, laboratory results, and etiology were compared in patients who developed single infection and patients who developed repeated infection (2 or more) after KT.A total of 161 infections were adequately documented in a total of 97 patients, of which 57 patients (58.8%) had 1 infection, 24 (24.7%) had 2, 11 (11.3%) had 3; 3 (3.1%) had 4, and 2 (2.1%) had 5 or more. The most common infection site was the urinary tract (90 infections; 56%), both overall and in the repeated infection group. The most frequently isolated pathogen was Pseudomonas aeruginosa. In the repeated infection patients, in most cases of P. aeruginosa infection (54%) it was cultured from urine. For first infections, a time between KT and infection of ≤ 21 days (area under receiver operating characteristic curve [AUC] 0.636) and a tacrolimus level ≥ 8 ng/mL (AUC 0.663) independently predicted repeat infection. The combination of these two predictive factors yielded an AUC of 0.716, which did not differ statistically significantly from either predictor alone.With regard to first infections after KT, a time between KT and infection of ≤ 21 days, and a tacrolimus level ≥ 8 ng/mL each independently predicted repeated infection in KT recipients.


Assuntos
Transplante de Rim/efeitos adversos , Infecção da Ferida Cirúrgica/etiologia , Adulto , Feminino , Humanos , Masculino , Recidiva , Estudos Retrospectivos , Fatores de Risco , Infecção da Ferida Cirúrgica/epidemiologia , Infecção da Ferida Cirúrgica/microbiologia , Infecções Urinárias/epidemiologia , Infecções Urinárias/etiologia , Infecções Urinárias/microbiologia
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