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1.
Exp Clin Transplant ; 20(9): 871-873, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-30251937

RESUMO

Ependymomas are the most common intramedullary spinal tumors in adults and constitute around 20% of all spinal tumors in adults. There are 3 subgroups of ependymomas according to World Health Organization classification: subependymoma or myxopapillary (grade 1), ependymoma (grade 2), and anaplastic (grade 3). Therapy for patients is aimed at safe and total surgical removal and, in selected cases, postoperative radiotherapy. Bleeding from a spinal ependymoma, with subsequent urgent surgery, is extremely rare. Here, we present a case of a renal transplant patient who had a cervical ependymoma. Although a considerable volume of peritumoral blood was observed during surgery, the patient had no neurologic deficits and no signs of deterioration.


Assuntos
Ependimoma , Transplante de Rim , Neoplasias da Medula Espinal , Neoplasias da Coluna Vertebral , Adulto , Ependimoma/diagnóstico por imagem , Ependimoma/cirurgia , Hemorragia/diagnóstico por imagem , Hemorragia/etiologia , Hemorragia/cirurgia , Humanos , Transplante de Rim/efeitos adversos , Procedimentos Neurocirúrgicos , Neoplasias da Medula Espinal/patologia , Neoplasias da Medula Espinal/radioterapia , Neoplasias da Medula Espinal/cirurgia , Resultado do Tratamento
2.
Exp Clin Transplant ; 19(6): 534-538, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-30398098

RESUMO

OBJECTIVES: The Achilles tendon, which is composed of tendinous parts of gastrocnemius and soleus muscles, is the strongest and the largest tendon in the human body. Chronic renal disease can lead to reduced physical activity and exercise capacity. Spontaneous rupture of the Achilles tendon can occur in patients with chronic renal failure, with recurrent microtraumas, hypoxia, and chronic acidosis as predisposing factors. Here, we assessed and compared the elastographic findings in the Achilles tendon using acoustic radiation force impulse elastography in patients on chronic hemodialysis, in renal transplant patients, and in healthy volunteers. MATERIALS AND METHODS: Our study included 25 patients on chronic hemodialysis, 25 renal transplant patients, and 25 healthy individuals (control group). The thickness and shear wave velocity of the Achilles tendons were measured bilaterally by ultrasonography and acoustic radiation force impulse elastography. RESULTS: The mean shear wave velocity was 3.67 m/s in the right and 3.64 m/s in the left Achilles tendon in the hemodialysis group. In the renal transplant group, the mean shear wave velocity was 4.29 and 4.25 m/s for the right and left Achilles tendon, respectively. In the control group, the mean shear wave velocity was 6.68 and 6.59 m/s, respectively for the right and left Achilles tendon. A statistically significant difference in shear wave velocities was shown among the groups (P < .05). CONCLUSIONS: Achilles tendons in patients with chronic renal failure and on hemodialysis were softer than in renal transplant patients and softer than in the control group. Chronic tendinopathy causes softening of the tendon. In the renal transplant group, stiffness of the Achilles tendon was increased versus the hemodialysis group but still softer than the control group, which could be explained as a positive clinical effect of renal transplant. Acoustic radiation force impulse elastography is an objective, easy, and noninvasive method to assess Achilles tendinopathy.


Assuntos
Tendão do Calcâneo , Técnicas de Imagem por Elasticidade , Falência Renal Crônica , Transplante de Rim , Insuficiência Renal Crônica , Tendinopatia , Tendão do Calcâneo/diagnóstico por imagem , Tendão do Calcâneo/fisiologia , Acústica , Técnicas de Imagem por Elasticidade/efeitos adversos , Técnicas de Imagem por Elasticidade/métodos , Feminino , Humanos , Falência Renal Crônica/complicações , Falência Renal Crônica/diagnóstico , Falência Renal Crônica/terapia , Transplante de Rim/efeitos adversos , Masculino , Diálise Renal/efeitos adversos , Insuficiência Renal Crônica/diagnóstico por imagem , Insuficiência Renal Crônica/terapia , Tendinopatia/etiologia , Resultado do Tratamento
3.
Ann Ital Chir ; 912020.
Artigo em Inglês | MEDLINE | ID: mdl-32519678

RESUMO

AIM: In the present study we aimed to determine the prevalence of thyroid cancer and the clinicopathological properties of papillary thyroid cancer (PTC) in a patient population undergoing dialysis for end-stage renal failure (ESRF). MATERIAL AND METHODS: We retrospectively reviewed all thyroid ultrasonography (USG) examinations performed between January 2007 and December 2015 to determine the incidence of nodular thyroid disease in ESRF and normal patient populations. For both patient groups, differences between patient and tumor characteristics were evaluated in patients diagnosed to have PTC. RESULTS: Among 29.381 patients who underwent thyroid USG examination, 3.491 were included in the ESRF group (Group 1) and 25.890 in the control group (Group 2). Tyroid cancer was detected in 77 (2.2%) of 3.491 patients in Group 1 and 338 (1.3%) of 25.890 patients in Group 2. Thyroid cancer was significantly more prevalent in patients with ESRF (p<0.001). DISCUSSION: When only patients with papillary thyroid cancer were considered, no significant difference existed between the two groups with respect to the prevalence of PTC, although PTC cases in the ESRF group had a significantly higher rate of aggressive characteristics such as capsule invasion, multifocality, and lymph node metastasis. Whereas thyroid cancer is more common in patients with ESRF compared to normal controls, papillary thyroid cancer was not significantly more prevalent in the ESRF group. CONCLUSIONS: PTC in the ESRF group having more aggressive properties than those in the control group suggests that PTC should be diagnosed earlier in their course, treated more aggressively, and followed more closely in ESRF. KEY WORDS: End-Stage Renal Failure, Fine Needle Aspiration Biopsy, Papillary thyroid cancer.


Assuntos
Carcinoma Papilar , Falência Renal Crônica , Neoplasias da Glândula Tireoide , Carcinoma Papilar/epidemiologia , Estudos de Casos e Controles , Humanos , Incidência , Falência Renal Crônica/epidemiologia , Estudos Retrospectivos , Neoplasias da Glândula Tireoide/complicações , Neoplasias da Glândula Tireoide/diagnóstico por imagem , Neoplasias da Glândula Tireoide/epidemiologia , Tireoidectomia
4.
Exp Clin Transplant ; 18(Suppl 1): 32-35, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-32008490

RESUMO

OBJECTIVES: Primary abdominal wound closure is performed at the completion of liver transplant in most patients. However, this is not always possible in pediatric recipients. The shortage of size-matched donor organs for pediatric patients means that occasionally it is necessary to use whole livers that are larger than can be accommodated comfortably in the child's abdomen. The present report outlines our experience with temporary patch closure after pediatric liver transplant of the abdominal wall. MATERIALS AND METHODS: Our team performed the first liver transplant in Turkey in 1988. Since 1988, we have performed 629 liver transplant (336 adult and 293 pediatric) procedures at our center. We evaluated data of 191 liver transplants performed in recipients who were under 10 years of age. Left lateral lobe grafts were used in 169 patients (88%), and whole grafts were used in 22 patients (12%). RESULTS: Temporary closure with the Bogota bag patch was necessary in 31 transplant procedures (16.2%), 3 of which involved whole livers and 28 of which involved left lateral lobe grafts. The age range of recipients was 5 months to 10 years (median, 30 mo). The temporary abdominal closure technique was preferred in 22 patients because the abdomen could not be closed during surgery. CONCLUSIONS: In pediatric patients with difficult abdominal closure after liver transplant, temporary patch closure is the treatment of choice. Our preference has been reinforced silicone sheeting, which allows minimal adhesion formation between the patch and abdominal viscera; in addition, the transparent nature of the material provides a window for inspection of the donor liver.


Assuntos
Abdome/cirurgia , Técnicas de Fechamento de Ferimentos Abdominais , Transplante de Fígado , Técnicas de Fechamento de Ferimentos Abdominais/efeitos adversos , Fatores Etários , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Transplante de Fígado/efeitos adversos , Masculino , Fatores de Tempo , Resultado do Tratamento , Turquia
5.
Clin Transplant ; 33(12): e13730, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31626710

RESUMO

BACKGROUND: Familial hypercholesterolemia (FH) is an autosomal dominant genetic disorder characterized by premature mortal cardiovascular complications. Liver transplantation (LT) is the only curative treatment option. In this study, the long-term clinical follow-up data of 8 patients who underwent LT with a diagnosis of FH in our center are presented. MATERIALS AND METHODS: A total of 638 LT were performed between December 1985 and June 2019 at Baskent University, of which 8 patients underwent LT with a diagnosis of FH and were evaluated retrospectively. RESULTS: Of the 8 patients, 4 underwent deceased donor and 4 living donor transplantation. Five patients had preoperative cardiovascular disease and consequent interventional operations. There was significant reduction in postoperative LDL-C and TC levels starting from the first week, and stabilizing at the first month and first year. The median survival time of patients was 5 years (2-12 years). All patients are still alive. None of the complications of patients with preoperative cardiovascular complications had progressed. CONCLUSION: Liver transplantation is the preferred curative treatment for the pathophysiology of FH. In our study, LDL-C levels were brought under control with LT performed on patients with FH. Median 5-year follow-up of patients showed that the progression of cardiac complications was abated.


Assuntos
Hiperlipoproteinemia Tipo II/cirurgia , Transplante de Fígado/métodos , Doadores de Tecidos/estatística & dados numéricos , Adolescente , Adulto , Criança , Pré-Escolar , Feminino , Seguimentos , Humanos , Hiperlipoproteinemia Tipo II/patologia , Masculino , Estudos Retrospectivos , Resultado do Tratamento , Adulto Jovem
6.
Exp Clin Transplant ; 17(3): 287-297, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-31145052

RESUMO

OBJECTIVES: Organ damage due to long cold ischemia time remains a hurdle in transplantation. In this preliminary animal study, we compared the new Baskent University Preservation Solution (BUPS) with the University of Wisconsin (UW) and histidine-tryptophan-ketoglutarate (HTK) solutions. MATERIALS AND METHODS: BUPS composition included electrolytes, raffinose, mannitol, N-acetylcysteine, taurine, adenosine, and ascorbic acid. In experiment 1, kidneys from 50 male Sprague-Dawley rats were placed into BUPS, HTK, or UW solution to assess cold ischemia injury, with biopsies taken at different time points for pathologic evaluation. In experiment 2, to investigate ischemia-reperfusion injury, 5 rats were renal transplant donors to 10 rats and 6 pigs were used as transplant donors-recipients among each other. RESULTS: In experiment 1, no significant cellular injury was shown at up to 3 hours of perfusion with any solution. At 6- to 48-hour perfusion, tubular injury was shown, with lowest injury in BUPS and HTK versus UW and control groups (P < .01). The BUPS group showed more moderate degree of tubular apoptosis and cytoskeletal rearrangement than the HTK and UW groups at 12-, 24-, and 48-hour perfusion (P < .01). In experiment 2, after ischemia-reperfusion injury, no significant differences were found between HTK and BUPS groups regarding tubular damage. Although no significant differences were shown regarding tubular cytoskeletal rearrangment and apoptosis in pig reperfusion group with BUPS versus HTK, significant differences were shown with these solutions in other groups. CONCLUSIONS: Tubular damage during ischemia-reperfusion injury (cytoskeletal disruption, increased apoptosis) were lower with BUPS. BUPS can be a cost-effective perfusion solution in transplantation.


Assuntos
Isquemia Fria , Transplante de Rim , Soluções para Preservação de Órgãos , Adenosina , Alopurinol , Animais , Glucose , Glutationa , Insulina , Masculino , Manitol , Cloreto de Potássio , Procaína , Rafinose , Ratos , Ratos Sprague-Dawley
7.
Exp Clin Transplant ; 17(Suppl 1): 216-219, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-30777558

RESUMO

OBJECTIVES: The aim of this study was to assess initial and follow-up computed tomography findings of invasive pulmonary aspergillosis in solid-organ transplant recipients and to examine the most common computed tomography patterns during hospitalization. MATERIALS AND METHODS: From January 2011 to September 2016, the total number of solid-organ transplant patients at our institution was 784. These patients consisted of 550 kidney, 164 liver, and 67 heart transplant recipients. Of these, 15 patients had a proven diagnosis of invasive pulmonary aspergillosis according to clinical and radiologic features with culture evidence of aspergillosis from bronchoalveolar lavage or lung biopsy. Computed tomography examinations were performed at initial diagnosis and at follow-up for evaluation of treatment. Computed tomography patterns were retrospectively evaluated by 2 experienced radiologists. Configurations and types of the largest lesions in each of the 15 patients were evaluated, and changes to lesions during treatment were recorded. Invasive pulmonary aspergillosis patterns were categorized into 6 main groups: ground-glass opacity, nodules, irregular nodules, patchy consolidation, cavity, and tree-in-bud patterns. RESULTS: The most common patterns were ground-glass opacity and irregular nodules, which were observed in 12 of 15 patients (80%), followed by regular nodules (73%), patchy consolidation and cavity (26%), and tree-in-bud pattern (20%). Long-term follow-up computed tomography studies showed that the regular nodules, tree-in-bud patterns, and groundglass opacity areas gradually reduced by 50% in 4 weeks. However, patchy consolidations and irregular nodules showed less regression than the other lesions over the 4-week period. CONCLUSIONS: Irregular nodules and ground-glass opacity were the most common computed tomography patterns in our solid-organ transplant recipients. Computed tomography patterns without irregular nodules and patchy consolidations may be associated with better prognosis due to their relatively rapid healing.


Assuntos
Aspergilose Pulmonar Invasiva/diagnóstico por imagem , Pulmão/diagnóstico por imagem , Tomografia Computadorizada Multidetectores , Nódulos Pulmonares Múltiplos/diagnóstico por imagem , Infecções Oportunistas/diagnóstico por imagem , Transplante de Órgãos/efeitos adversos , Feminino , Humanos , Hospedeiro Imunocomprometido , Imunossupressores/efeitos adversos , Aspergilose Pulmonar Invasiva/imunologia , Aspergilose Pulmonar Invasiva/microbiologia , Pulmão/imunologia , Pulmão/microbiologia , Masculino , Nódulos Pulmonares Múltiplos/imunologia , Nódulos Pulmonares Múltiplos/microbiologia , Infecções Oportunistas/imunologia , Infecções Oportunistas/microbiologia , Valor Preditivo dos Testes , Estudos Retrospectivos , Resultado do Tratamento
8.
Ulus Travma Acil Cerrahi Derg ; 24(5): 429-433, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-30394496

RESUMO

BACKGROUND: In this study, we aimed to investigate the factors causing conversion from laparoscopic appendectomy (LA) to open appendectomy (OA) in patients with acute appendicitis and to investigate the role of preoperative C reactive protein (CRP) and neutrophil ratio in this conversion and determine a cut-off point for these parameters. METHODS: Records of patients who underwent LA due to acute appendicitis at our general surgery department between January 2011 and January 2017 were retrospectively evaluated. The preoperative American Society of Anesthesiology (ASA) scores, Alvarado scores, white blood cell count, C-reactive protein level, and neutrophil ratio were evaluated. RESULTS: LA was performed in 394 patients with an initial diagnosis of acute appendicitis. A conversion to OA (cOA) was performed in 17 patients (4.31%). A CRP value of ≥108.5 mg/L and a neutrophil ratio of ≥81.5% were found to be statistically significant for the cOA (p<0.001). CONCLUSION: Our study results showed that male gender, age, elevated neutrophil ratio, and CRP value were the main risk factors for cOA in patients who were scheduled for LA due to acute appendicitis.


Assuntos
Apendicectomia/estatística & dados numéricos , Apendicite , Proteína C-Reativa/análise , Laparoscopia/estatística & dados numéricos , Contagem de Leucócitos/estatística & dados numéricos , Apendicectomia/métodos , Apendicite/sangue , Apendicite/epidemiologia , Apendicite/imunologia , Apendicite/cirurgia , Humanos , Laparoscopia/métodos , Neutrófilos/imunologia , Estudos Retrospectivos
9.
Int J Surg Case Rep ; 53: 295-298, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30453241

RESUMO

INTRODUCTION: Perivascular epithelioid celltumor (PEComa) is a rare mesenchymal neoplasia and can be found in various body sites. On the other hand, hepatic PEComa is very rare, with only a few studies having reported hepatic malignant PEComa. There is no gold standard regarding the use of diagnostic imaging studies. The diagnosis of hepatic PEComa is made by a positive immunohistochemical staining for HMB45 and Melan A. Herein, we discussed the therapeutic and follow-up process of a symptomatic hepatic PEComa case. PRESENTATION OF CASE: A 22-year-old woman presented with a palpable mass in abdomen. A computerized tomographic examination showed a giant hepatic mass of left lobe origin, which was excised surgically. The pathology result was reported as a PEComa. DISCUSSION: The diagnostic approach, treatment modalities, and follow-up procedures are not standard. The main treatment modality for PEComa is surgical excision with adequate surgical margin. CONCLUSION: A longer follow-up is required for patients with hepatic PEComa because the nature of the disease is not entirely clear.

10.
Clin Transplant ; 32(8): e13305, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-29851156

RESUMO

BACKGROUND: In this study, we aimed to determine the frequency of histopathologic outcomes of solid-organ transplantation in women with abnormal uterine bleeding (AUB) receiving immunosuppressive therapies. METHODS: This is a retrospective study including a single-center experience. Data were extracted from hospital records, and solid-organ transplant recipients who were diagnosed with AUB were included. RESULTS: Fifty-five of these patients were renal transplant recipients (79.7%), and 14 were liver transplant recipients (20.3%). Histopathologic examination showed various histopathologic patterns of endometrium in patients with AUB consisting of normal histopathologic findings of endometrium in 31 patients (48.4%); 29 hormonal imbalance during proliferative and secretory phases of menstrual cycle and two atrophic endometrium. Endometrial hyperplasia without atypia was observed in 11 patients (17.2%). Polyp was seen in 22 patients (34.4%); 21 endometrial polyp and one endocervical polyp. There were significant differences in terms of histopathologic findings among the three groups of patients according to different immunosuppressive regimens (P = .029). There was no endometrial hyperplasia in women receiving sirolimus-based immunosuppressive regimens. Moreover, there was no endometrial hyperplasia in the liver transplant recipient group. CONCLUSIONS: Sirolimus-based immunosuppressive regimens may be administered to patients who have risk factors for endometrial precancerous lesions, such as endometrial hyperplasia. However, additional well-designed, large-scale studies are warranted to confirm our findings.


Assuntos
Hiperplasia Endometrial/patologia , Endométrio/patologia , Rejeição de Enxerto/tratamento farmacológico , Imunossupressores/efeitos adversos , Transplante de Rim/efeitos adversos , Transplante de Fígado/efeitos adversos , Hemorragia Uterina/fisiopatologia , Adulto , Hiperplasia Endometrial/etiologia , Feminino , Seguimentos , Rejeição de Enxerto/etiologia , Sobrevivência de Enxerto , Humanos , Prognóstico , Estudos Retrospectivos , Fatores de Risco , Transplantados
11.
Exp Clin Transplant ; 16 Suppl 1(Suppl 1): 203-207, 2018 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-29528028

RESUMO

OBJECTIVES: Solid-organ transplant recipients are at an increased risk of developing skin cancer; this risk is due to long-term graft-preserving immunosuppressive therapy, and excessive sun exposure is a major contributing factor to this process. The aim of this study was to evaluate the skin cancer awareness and sun-protective behavior of solid-organ transplant recipients. MATERIALS AND METHODS: In all, 70 consecutive solid-organ transplant recipients were evaluated regarding knowledge of their increased skin cancer risk and regarding the influence of this knowledge on their sun-protective practices, by applying a questionnaire during their routine check-up visits. RESULTS: Of 70 solid-organ transplant recipients, 38 (54.3%) stated knowledge of hazardous consequences of sun exposure; however, only 28 (40%) had the knowledge of causal relationship between sun and skin cancer development. There were 31 patients (44.3%) who were unable to recall anybody giving any information to them about sun protection, and 40 patients (57.1%) had never visited a dermatology clinic. The 10 solid-organ transplant recipients (14.3%) who used sunscreen creams daily had been undergoing regular dermatologic examination. Regarding sun-protective clothing, only 8 patients (11.4%) had been wearing a suitable hat, long sleeves, and sunglasses when outdoors. There was a statistically significant difference between the groups who had visited a dermatology clinic versus those who had not regarding knowledge of sun protection, the causal relationship between sun exposure and skin cancer, the use of sunscreens, and use of sun-protective clothing (P < .05). CONCLUSIONS: Our data showed that dermatologic examination and education of patients about skin cancer development and sunscreen measures improved the sun-protective habits of solid-organ transplant recipients. Therefore, orderly visits once or twice a year should be strongly advised for this patient population by their medical care providers.


Assuntos
Conscientização , Comportamentos Relacionados com a Saúde , Conhecimentos, Atitudes e Prática em Saúde , Neoplasias Induzidas por Radiação/prevenção & controle , Transplante de Órgãos/efeitos adversos , Equipamento de Proteção Individual , Neoplasias Cutâneas/prevenção & controle , Luz Solar/efeitos adversos , Protetores Solares/uso terapêutico , Transplantados/psicologia , Adolescente , Adulto , Dispositivos de Proteção dos Olhos , Feminino , Humanos , Imunossupressores/efeitos adversos , Masculino , Pessoa de Meia-Idade , Neoplasias Induzidas por Radiação/etiologia , Neoplasias Induzidas por Radiação/psicologia , Visita a Consultório Médico , Roupa de Proteção , Fatores de Proteção , Fatores de Risco , Comportamento de Redução do Risco , Neoplasias Cutâneas/etiologia , Neoplasias Cutâneas/psicologia , Inquéritos e Questionários , Resultado do Tratamento , Adulto Jovem
12.
Exp Clin Transplant ; 16(1): 1-9, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-29409436

RESUMO

OBJECTIVES: Kidney transplant is the best choice for treatment of patients with advanced chronic renal disease. However, small, poorly compliant, and unstable bladders can result in major problems for patients. Here, we aimed to develop and evaluate a new ileobladder model. MATERIALS AND METHODS: Fifteen rats (250-300 g) and 5 pigs (~100 kg) were cared for according to institutional and published guidelines. After general anesthesia, laparotomy was done through midline incision. Ileal loops were prepared for ileobladder. After cystectomy (0.5 cm above the trigone in rats, 1 cm above the trigone in pigs), anastomoses were done between antimesenteric sides of ileal loops and bladder remnant with 6/0 Prolene suture. Three other pigs received simultaneous renal transplant. RESULTS: One rat died on day 1 postsurgery from multiorgan hemorrhage. Two rats survived for 5 days, 3 rats for 7 days, and 3 rats for 11 days; 6 rats were killed for pathologic evaluation after 3 months. One pig survived for 22 days and 1 for 9 days. Of the 3 pigs that received a simultaneous renal transplant, 2 pigs were alive and doing well 80 and 72 days after surgery with normal urinary discharge (1 pig was killed for pathologic evaluation after 3 days). When ileobladder was opened, complete recovery of the anastomosis line was observed. Pathologic examination of the anastomosis sites reported a normal healing process with moderate inflammation and the muscular wall of the intestine showed hypertrophia that nearly reached the size of the bladder muscularis propria. CONCLUSIONS: Although we had some complications because no draining procedure was used, in terms of technique, our new ileobladder model is promising for providing functional bladder volume. A larger scale series in the clinical setting is planned. This technique can be useful for small bladders and bladder physiology disorders.


Assuntos
Íleo/cirurgia , Transplante de Rim , Bexiga Urinária/cirurgia , Anastomose Cirúrgica , Animais , Íleo/patologia , Hemorragia Pós-Operatória/etiologia , Ratos , Recuperação de Função Fisiológica , Sus scrofa , Fatores de Tempo , Bexiga Urinária/patologia , Bexiga Urinária/fisiopatologia , Micção , Cicatrização
13.
Exp Clin Transplant ; 15(Suppl 1): 50-52, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28260432

RESUMO

OBJECTIVES: Our aim was to analyze our experience with orthotopic liver transplant for hepatoblastoma patients. MATERIALS AND METHODS: We performed a single-center retrospective analysis of 6 orthotopic liver transplant cases in children with hepatoblastoma from 2001 to March 2015. We evaluated patient demographic features, pretreatment extent of disease stage, type of transplant, change in serum alpha-fetoprotein levels, complications, and follow-up results. RESULTS: Orthotopic liver transplant was performed for pretreatment extent of disease stage III with a central location (n = 3) and pretreatment extent of disease stage IV (n = 3). All children underwent living-donor orthotopic liver transplant. Postoperative serum alpha-fetoprotein levels remained below 10 ng/mL during the follow-up period in 3 patients who were free of recurrences or metastases. Five patients were free of tumor recurrences at a median follow-up of 29.9 months. CONCLUSIONS: The limited number of cases we present without long-term follow-up of orthotopic liver transplant for unresectable hepatoblastoma seemed to show good clinical results.


Assuntos
Hepatoblastoma/cirurgia , Neoplasias Hepáticas/cirurgia , Transplante de Fígado , Fatores Etários , Criança , Pré-Escolar , Intervalo Livre de Doença , Feminino , Hepatoblastoma/sangue , Hepatoblastoma/patologia , Humanos , Lactente , Neoplasias Hepáticas/sangue , Neoplasias Hepáticas/patologia , Transplante de Fígado/métodos , Doadores Vivos , Masculino , Estadiamento de Neoplasias , Estudos Retrospectivos , Fatores de Tempo , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Turquia , alfa-Fetoproteínas/metabolismo
14.
Exp Clin Transplant ; 15(Suppl 1): 79-83, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28260440

RESUMO

OBJECTIVES: Despite surgical and medical advances, vascular complications are still among the major concerns after renal transplant, with a reported incidence of 3% to 15%. We evaluated the incidence and management of our transplant team 's vascular complications over 40 years. MATERIALS AND METHODS: From November 1975 to the present, we have performed a total of 2594 renal transplant procedures. Of these, 1997 grafts (76%) were obtained from living donors, and 597 grafts (24%) were obtained from deceased donors. All renal transplant procedures, including those performed in pediatric patients, used the extraperitoneal approach to the contralateral iliac fossa. Revascularization was performed for all grafts. A single end-to-end internal iliac artery anastomosis was performed in 1082 patients (41.8%), an end-to-side external iliac artery anastomosis was performed in 1289 patients (49.7%), and an end-to-side common iliac artery anastomosis was performed in 66 patients (2.5%). In 157 procedures (6%), there were at least 2 renal arteries, and both internal iliac arteries or external iliac arteries were used for anastomosis. RESULTS: We observed 57 vascular complications (2.1%) in 54 renal transplant procedures. The most frequent complication was renal artery stenosis (n = 17; 0.6%). There were 8 instances of renal artery thrombosis (0.4%), 7 of renal artery kinking (0.3%), 5 of renal vein thrombosis (0.2%), 9 of renal vein kinking (0.5%), 3 of external iliac artery dissection (0.01%), 5 renal vein lacerations (0.2%), and 3 renal artery lacerations (0.01%). We performed urgent surgery for 41 vascular complications; 38 were managed successfully. Percutaneous interventional techniques were used successfully for 18 vascular complications. CONCLUSIONS: The vascular complication rate in our patients is lower than that reported in the literature. Surgical complications can be minimized with careful transplant technique and close follow-up, as early diagnosis is crucial to early management and successful treatment of complications.


Assuntos
Transplante de Rim/efeitos adversos , Doenças Vasculares/epidemiologia , Procedimentos Cirúrgicos Vasculares/efeitos adversos , Adolescente , Adulto , Idoso , Angiografia , Criança , Pré-Escolar , Feminino , Humanos , Incidência , Lactente , Transplante de Rim/métodos , Masculino , Pessoa de Meia-Idade , Reoperação , Estudos Retrospectivos , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento , Turquia/epidemiologia , Doenças Vasculares/diagnóstico por imagem , Doenças Vasculares/cirurgia , Procedimentos Cirúrgicos Vasculares/métodos , Adulto Jovem
15.
Exp Clin Transplant ; 15(Suppl 1): 128-132, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28260452

RESUMO

OBJECTIVES: This study sought to evaluate the efficacy of liver transplant for unusual liver diseases. MATERIALS AND METHODS: The results of 476 patients who underwent liver transplant from 1988 to January 2015 were retrospectively analyzed. Two hundred forty-five of them were adult patients and 231 of them were pediatric. Thirty-one patients had unusual liver disease. RESULTS: Of the 31 patients with unusual liver disease, 9 (29%) were adult and 22 (71%) were pediatric patients. In the pediatric group, indications for liver transplant were Alagille syndrome (n = 5), Crigler-Najjar syndrome type 1 (n = 5), glycogen storage disease (n = 3), oxalosis (n = 3), familial hypercholesterolemia (n = 2), alpha-1-antitrypsin deficiency (n = 2), Caroli disease (n = 1), and cystic neuroblastoma metastasis (n = 1). Six patients (27.2%) had acute rejection episodes and were successfully treated with pulse steroids. In 2 patients, retransplant was performed for chronic rejection. Three patients died during follow-up (13.6%): 2 because of sepsis and 1 because of cranial hemorrhage. In the adult group, indications for liver transplant were neuroendocrine tumor metastasis (n = 1), liver angiosarcoma (n = 1), familial hypercholesterolemia (n = 2), alveolar hydatid disease (n = 2), cystic fibrosis (n = 1), congenital hepatic fibrosis (n = 1), and oxalosis (n = 1). Four patients (44.4%) had acute rejection episodes and were successfully treated with pulse steroid therapy. One patient died due to the recurrence of primary disease (liver angiosarcoma) during follow-up (11.1%). CONCLUSIONS: Advances in liver transplant and our understanding about unusual liver disease have led to significant improvements in managing these diseases. Liver transplant effectively treats the underlying defect and the complications of portal hypertension, or risk of malignancy for those disorders, in which the liver is affected.


Assuntos
Doença Hepática Terminal/cirurgia , Transplante de Fígado , Adolescente , Adulto , Criança , Pré-Escolar , Doença Hepática Terminal/diagnóstico , Doença Hepática Terminal/etiologia , Doença Hepática Terminal/mortalidade , Feminino , Rejeição de Enxerto/imunologia , Rejeição de Enxerto/prevenção & controle , Sobrevivência de Enxerto , Humanos , Imunossupressores/uso terapêutico , Lactente , Transplante de Fígado/efeitos adversos , Transplante de Fígado/mortalidade , Masculino , Estudos Retrospectivos , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento , Turquia , Adulto Jovem
16.
Exp Clin Transplant ; 15(Suppl 1): 175-177, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28260461

RESUMO

Traumatic neuromas of the biliary tract have occasionally been reported to cause strictures at the cystic duct stump as a late complication of cholecystectomy with common bile duct exploration. The incidence of symptomatic traumatic biliary neuroma appears to be low after orthotopic liver transplant, as only 25 patients have been described previously in the English-language literature. Traumatic (amputation) neuroma is a reactive proliferation of pericholangial nerve fibers induced by injury, but it is not a true neoplasm. The diagnosis of traumatic neuroma is possible only by histopathologic examination; the diagnostic finding is a mass of hyperplastic nerve bundles. We report a patient with a traumatic neuroma causing an early biliary stricture with intrahepatic extension after an orthotopic liver transplant. The lesion failed to respond to repeated endoscopic stenting and eventually required hepaticojejunostomy. A biopsy of the liver graft, performed in the 13th month after transplant, showed chronic ductopenic rejection.


Assuntos
Neoplasias do Sistema Biliar/cirurgia , Colestase/cirurgia , Jejunostomia/métodos , Transplante de Fígado/efeitos adversos , Neuroma/cirurgia , Adolescente , Neoplasias do Sistema Biliar/diagnóstico , Neoplasias do Sistema Biliar/etiologia , Biópsia , Colangiografia , Colestase/diagnóstico , Colestase/etiologia , Doença Crônica , Constrição Patológica , Feminino , Rejeição de Enxerto/etiologia , Humanos , Neuroma/diagnóstico , Neuroma/etiologia , Fatores de Tempo , Resultado do Tratamento
17.
Exp Clin Transplant ; 15(Suppl 1): 185-189, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28260464

RESUMO

OBJECTIVES: An incisional hernia seriously burdens the quality of life after liver transplant. The incidence of incisional hernia after liver transplant is reported to be 4% to 20%. Here, we evaluated incisional hernias that occurred after adult liver transplant and incisional hernias intentionally made in infant liver transplant procedures. MATERIALS AND METHODS: Between December 1988 and May 2016, we performed 536 liver transplant procedures in 515 patients. Demographic features, surgical outcomes, and predisposing factors were evaluated. RESULTS: Of 452 liver transplant patients included, incisional hernias were diagnosed in 29 patients (6.4%; 7 pediatric, 22 adult). Most were males (77%) with Child-Pugh score C cirrhosis (62%), moderate/severe ascites (81%), and serum albumin levels <3.5 g/L (86%). Incisional hernia developed in 16 of 51 patients (31%) with wound infection. Twelve incisional hernias were seen in 40 recipients (30%) with body mass index ≥30 kg/m2. Eight of 45 patients (18%) with repeated surgery had incisional hernias. Five of 22 adult incisional hernias (23%) had primary fascia repair, and 17 (77%) were repaired with Prolene mesh graft (3 sublay, 14 onlay). No other complications and no hernia recurrence were shown during follow-up (range, 8-138 mo). Of 7 pediatric liver transplant patients with intentionally made incisional hernias during liver transplant, 5 patients had primary fascia repair and 2 patients had onlay mesh repair. No complications or recurrence were shown during follow-up (range, 12-60 mo). CONCLUSIONS: Repeated surgery, postoperative wound infection, and obesity were found to be predisposing risk factors for incisional hernia development after liver transplant in adults. Abdomen closure in infant liver transplant with large-for-size grafts is a different area of discussion. Here, we suggest that an intentionally made incisional hernia with staged closure of the abdomen is safe and effective for graft and patient survival.


Assuntos
Hérnia Incisional/etiologia , Transplante de Fígado/efeitos adversos , Adulto , Pré-Escolar , Feminino , Herniorrafia , Humanos , Hérnia Incisional/diagnóstico , Hérnia Incisional/cirurgia , Lactente , Masculino , Pessoa de Meia-Idade , Obesidade/complicações , Reoperação , Fatores de Risco , Infecção da Ferida Cirúrgica/etiologia , Infecção da Ferida Cirúrgica/microbiologia , Fatores de Tempo , Resultado do Tratamento
18.
Exp Clin Transplant ; 2017 Mar 28.
Artigo em Inglês | MEDLINE | ID: mdl-28350288

RESUMO

OBJECTIVES: Neurologic complications are common after kidney and liver transplant. Neurologic complications affect mortality and morbidity in transplant recipients, and neuropathic pain is an important symptom affecting a patient's quality of life. The aim of the present study was to provide readers with our experience regarding causes and treatment of neuropathic pain in patients undergoing kidney and liver transplant at our transplantation center. MATERIALS AND METHODS: The medical data of 553 kidney transplant recipients and 258 liver transplant recipients who received transplant procedures at the Baskent University Transplantation Center between 2008 and May 2016 were retrospectively reviewed. Fifty-one patients who were examined by an expert neurologist and diagnosed with neuropathic pain on the basis of clinical, neurologic examination, and laboratory findings were included for analyses. RESULTS: Among 811 transplant recipients, 51 patients (6.2%) were diagnosed with neuropathic pain. Of these, 22 were female and 38 were male patients, and 42 were kidney transplant recipients and 9 were liver transplant recipients. Causes of neuropathic pain included uremia, diabetes mellitus, ischemic peripheral arterial disease, inflammatory neuropathy, vasculitis, discopathy, postherpetic neuralgia, carpal tunnel syndrome, and multiple myeloma. Patients with symptoms too mild to affect daily life activities were treated conservatively. Plasmapheresis, gabapentin, pregabalin, alpha-lipoic acid, and duloxetine were administered as treatment modalities and medications. CONCLUSIONS: Neuropathic pain was lower in our transplant recipients than in the general population. Treatment medications were effective for transplant recipients at lower doses for the management of neuropathic pain impairing quality of life than doses for the general population.

19.
Exp Clin Transplant ; 14(Suppl 3): 87-90, 2016 11.
Artigo em Inglês | MEDLINE | ID: mdl-27805521

RESUMO

OBJECTIVES: Renal transplant is an important treatment option for end-stage renal disease. A successful kidney transplant improves the quality of life and reduces the mortality risk compared with maintenance dialysis in patients with end-stage renal disease. Several immunologic and nonimmunologic factors are responsible for graft outcomes in renal transplant patients. Our study was performed to evaluate the role of smoking on postoperative pulmonary complications and graft outcomes in renal transplant patients. MATERIALS AND METHODS: Our study retrospectively analyzed 1740 patients who had renal transplants between 1987 and 2014 at Baskent University. Patients with smoking data were included in the study. Patient demographic, smoking status, comorbid diseases, postoperative pulmonary complications, graft outcomes, and clinical features were recorded. The relation between postoperative pulmonary complications and risk factors was investigated. RESULTS: Our study included 131 adult renal transplant recipients who had smoking data. The incidence of postoperative pulmonary complications was 16% (21 patients) in the first month after surgery. Smoking history was found in 52 patients (39.7%). There was a statistically significant relationship between the presence of atelectasis and smoking history (P = .004). A positive and statistically significant correlation was detected between atelectasis and pack-years smoking (r = 0.424; P = .001). We evaluated graft rejection within 1 month after transplant regardless of being acute cellular or humoral rejection. The relation between smoking history and graft rejection within 1 month after transplant was significant (P = .011). CONCLUSIONS: Renal transplant patients who are smokers have an increased risk for early postoperative pulmonary complications. Furthermore, cigarette smoking contributes to allograft loss in renal transplant patients. Smoking cessation before surgery can reduce the risk of early postoperative complications.


Assuntos
Rejeição de Enxerto/etiologia , Falência Renal Crônica/cirurgia , Transplante de Rim/efeitos adversos , Pneumopatias/etiologia , Fumar/efeitos adversos , Adulto , Aloenxertos , Comorbidade , Feminino , Rejeição de Enxerto/imunologia , Rejeição de Enxerto/prevenção & controle , Sobrevivência de Enxerto , Hospitais Universitários , Humanos , Imunidade Celular , Imunidade Humoral , Falência Renal Crônica/complicações , Falência Renal Crônica/diagnóstico , Pneumopatias/diagnóstico , Pneumopatias/prevenção & controle , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Abandono do Hábito de Fumar , Prevenção do Hábito de Fumar , Fatores de Tempo , Resultado do Tratamento , Turquia
20.
Exp Clin Transplant ; 14(1): 100-2, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25807337

RESUMO

A range of cancer types, at increased rates, is described in renal transplant recipients receiving immunosuppression. Aside from immunodeficiency, heightened medical surveillance for cancer, lifestyle, and other risk factors all play a role. Although the relation between cancer risk and degree of immunodeficiency might not be linear, and might be different for a wide range of cancer subtypes, human papillomavirus-related cancers in long-term transplant recipients may suggest the role of even modest immunosuppression, when present long enough. High-risk human papillomavirus types are recognized as the cause of cancer of the cervix. We report a 49-year-old female renal transplant recipient diagnosed with cervical squamous cell carcinoma, 5 years after the transplant. Based on this patient, we highlight difficulties in surgical approach and the importance of close clinical follow-up including regular gynecologic screening for cervical premalignant and malignant lesions.


Assuntos
Carcinoma de Células Escamosas/etiologia , Transplante de Rim/efeitos adversos , Neoplasias do Colo do Útero/etiologia , Braquiterapia , Carcinoma de Células Escamosas/diagnóstico , Carcinoma de Células Escamosas/imunologia , Carcinoma de Células Escamosas/cirurgia , Feminino , Humanos , Histerectomia , Hospedeiro Imunocomprometido , Imunossupressores/efeitos adversos , Excisão de Linfonodo , Pessoa de Meia-Idade , Radioterapia Adjuvante , Fatores de Risco , Fatores de Tempo , Neoplasias do Colo do Útero/diagnóstico , Neoplasias do Colo do Útero/imunologia , Neoplasias do Colo do Útero/cirurgia
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