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1.
Ophthalmic Plast Reconstr Surg ; 38(1): 87-89, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-34750312

RESUMO

PURPOSE: To describe a novel surgical technique for implanting eyelid weights via a sutureless transconjunctival approach. In comparison to the traditional supratarsal crease approach, this technique does not involve any external incisions or suture placement. The procedure can reduce surgical time and complications associated with the traditional external approach. METHODS: This case series includes 13 patients who underwent eyelid weight placement via the transconjunctival approach for paralytic lagophthalmos secondary to facial nerve paralysis (12 patients had unilateral paralysis and 1 patient had bilateral) with a total of 14 eyelid weights placed. The procedures were performed at an outpatient office-based surgical center. All procedures were performed or supervised by the same surgeon. Patients were followed for an average 6-month postoperative period for postoperative complications. RESULTS: The sutureless transconjunctival approach to eyelid weight insertion was successful in achieving the desired functional and aesthetic outcomes. Patients undergoing this technique avoided the discomfort of postoperative suture removal. All patients achieved comparable outcomes postoperatively. There were no complications reported across the 13 patients throughout the 6-month postoperative period. CONCLUSIONS: This case series demonstrates that the transconjunctival approach for metal eyelid weight insertion is practical, relatively easy to perform, and associated with functional outcomes that are comparable to those achieved with the traditional approach, however, without external incision or placement of sutures.


Assuntos
Blefaroplastia , Doenças Palpebrais , Paralisia Facial , Doenças Palpebrais/cirurgia , Pálpebras/cirurgia , Paralisia Facial/cirurgia , Humanos , Estudos Retrospectivos , Suturas
2.
BMC Cancer ; 21(1): 1139, 2021 Oct 23.
Artigo em Inglês | MEDLINE | ID: mdl-34688256

RESUMO

BACKGROUND: Post hepatectomy liver failure (PHLF) remains a significant risk in patients undergoing curative liver resection for cancer, however currently available PHLF risk prediction investigations are not sufficiently accurate. The Hepatectomy risk assessment with functional magnetic resonance imaging trial (HEPARIM) aims to establish if quantitative MRI biomarkers of liver function & perfusion can be used to more accurately predict PHLF risk and FLR function, measured against indocyanine green (ICG) liver function test. METHODS: HEPARIM is an observational cohort study recruiting patients undergoing liver resection of 2 segments or more, prior to surgery patients will have both Dynamic Gadoxetate-enhanced (DGE) liver MRI and ICG testing. Day one post op ICG testing is repeated and R15 compared to the Gadoxetate Clearance (GC) of the future liver remnant (FLR-GC) as measure by preoperative DGE- MRI which is the primary outcome, and preoperative ICG R15 compared to GC of whole liver (WL-GC) as a secondary outcome. Data will be collected from medical records, biochemistry, pathology and radiology reports and used in a multi-variate analysis to the value of functional MRI and derive multivariant prediction models for future validation. DISCUSSION: If successful, this test will potentially provide an efficient means to quantitatively assess FLR function and PHLF risk enabling surgeons to push boundaries of liver surgery further while maintaining safe practice and thereby offering chance of cure to patients who would previously been deemed inoperable. MRI has the added benefit of already being part of the routine diagnostic pathway and as such would have limited additional burden on patients time or cost to health care systems. (Hepatectomy Risk Assessment With Functional Magnetic Resonance Imaging - Full Text View - ClinicalTrials.gov , n.d.) TRIAL REGISTRATION: ClinicalTrials.gov, ClinicalTrials.gov NCT04705194 - Registered 12th January 2021 - Retrospectively registered.


Assuntos
Hepatectomia/métodos , Neoplasias Hepáticas/diagnóstico por imagem , Neoplasias Hepáticas/cirurgia , Imageamento por Ressonância Magnética/métodos , Humanos , Medição de Risco
3.
BMJ Open ; 11(6): e044281, 2021 06 29.
Artigo em Inglês | MEDLINE | ID: mdl-34187817

RESUMO

INTRODUCTION: Surgery to remove the gallbladder (laparoscopic cholecystectomy (LC)) is the standard treatment for symptomatic gallbladder disease. One potential complication of gallbladder disease is that gallstones can pass into the common bile duct (CBD) where they may remain dormant, pass spontaneously into the bowel or cause problems such as obstructive jaundice or pancreatitis. Patients requiring LC are assessed preoperatively for their risk of CBD stones using liver function tests and imaging. If the risk is high, guidelines recommend further investigation and treatment. Further investigation of patients at low or moderate risk of CBD stones is not standardised, and the practice of imaging the CBD using magnetic resonance cholangiopancreatography (MRCP) in these patients varies across the UK. The consequences of these decisions may lead to overtreatment or undertreatment of patients. METHODS AND ANALYSIS: We are conducting a UK multicentre, pragmatic, open, randomised controlled trial with internal pilot phase to compare the effectiveness and cost-effectiveness of preoperative imaging with MRCP versus expectant management (ie, no preoperative imaging) in adult patients with symptomatic gallbladder disease undergoing urgent or elective LC who are at low or moderate risk of CBD stones. We aim to recruit 13 680 patients over 48 months. The primary outcome is any hospital admission within 18 months of randomisation for a complication of gallstones. This includes complications of endoscopic retrograde cholangiopancreatography for the treatment of gallstones and complications of LC. This will be determined using routine data sources, for example, National Health Service Digital Hospital Episode Statistics for participants in England. Secondary outcomes include cost-effectiveness and patient-reported quality of life, with participants followed up for a median of 18 months. ETHICS AND DISSEMINATION: This study received approval from Yorkshire & The Humber - South Yorkshire Research Ethics Committee. Results will be submitted for publication in a peer-reviewed journal. TRIAL REGISTRATION NUMBER: ISRCTN10378861.


Assuntos
Colecistectomia Laparoscópica , Coledocolitíase , Cálculos Biliares , Adulto , Colangiopancreatografia Retrógrada Endoscópica , Colangiopancreatografia por Ressonância Magnética , Colecistectomia Laparoscópica/efeitos adversos , Coledocolitíase/diagnóstico por imagem , Coledocolitíase/cirurgia , Ducto Colédoco , Análise Custo-Benefício , Inglaterra , Cálculos Biliares/diagnóstico por imagem , Cálculos Biliares/cirurgia , Humanos , Estudos Multicêntricos como Assunto , Qualidade de Vida , Ensaios Clínicos Controlados Aleatórios como Assunto , Medicina Estatal , Conduta Expectante
5.
Semin Plast Surg ; 33(2): 92-102, 2019 May.
Artigo em Inglês | MEDLINE | ID: mdl-31037045

RESUMO

Eyelid malposition is a challenging problem faced by surgeons. Given the delicate nature of the eyelid and its complex anatomy, eyelid repair requires both a comprehensive understanding of eyelid anatomy along with thorough presurgical planning and surgical execution. A wide range of options is available for eyelid reconstruction but the location and extent of the deformity often dictate the type of repair. This article is a review of commonly encountered forms of eyelid malposition. Relevant reconstructive techniques and current evidence-based methods of reconstruction are discussed in detail. Anatomical considerations, the nature of specific defects, pearls of preoperative evaluation, and the reconstructive options available to the facial plastic and oculoplastic surgeon are outlined. Topics discussed include ectropion, entropion, eyelid retraction, and blepharoptosis.

6.
BMJ Open ; 8(10): e018499, 2018 10 02.
Artigo em Inglês | MEDLINE | ID: mdl-30282676

RESUMO

OBJECTIVES: Following a diagnosis of cancer, the detailed assessment of prognostic stage by radiology is a crucial determinant of initial therapeutic strategy offered to patients. Pretherapeutic stage by imaging is known to be inconsistently documented. We tested whether the completeness of cancer staging radiology reports could be improved through a nationally introduced pilot of proforma-based reporting for a selection of six common cancers. DESIGN: Prospective interventional study comparing the completeness of radiology cancer staging reports before and after the introduction of proforma reporting. SETTING: Twenty-one UK National Health Service hospitals. PARTICIPANTS: 1283 cancer staging radiology reports were submitted. MAIN OUTCOME MEASURES: Radiology staging reports across the six cancers types were evaluated before and after the implementation of proforma-based reporting. Report completeness was assessed using scoring forms listing the presence or absence of predetermined key staging data. Qualitative data regarding proforma implementation and usefulness were collected from questionnaires provided to radiologists and end-users. RESULTS: Electronic proforma-based reporting was successfully implemented in 15 of the 21 centres during the evaluation period. A total of 787 preproforma and 496 postproforma staging reports were evaluated. In the preproforma group, only 48.7% (5586/11 470) of key staging items were present compared with 87.3% (6043/6920) in the postproforma group. Thus, the introduction of proforma reporting produced a 78% improvement in staging completeness . This increase was seen across all cancer types and centres. The majority of participants found proforma reporting improved cancer reporting quality for their clinical practice . CONCLUSION: The implementation of proforma reporting results in a significant improvement in the completeness of cancer staging reports. Proforma-based assessment of cancer stage enables objective comparisons of patient outcomes across centres. It should therefore become an auditable quality standard for cancer care.


Assuntos
Auditoria Médica , Neoplasias/patologia , Neoplasias/radioterapia , Humanos , Prontuários Médicos , Estadiamento de Neoplasias , Estudos Prospectivos , Melhoria de Qualidade/organização & administração , Reino Unido
7.
Craniomaxillofac Trauma Reconstr ; 11(3): 238-241, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-30087755

RESUMO

Nasoseptal perforations can be a challenging defect for the reconstructive surgeon, with repair limited by the surrounding tissue availability and the defect size. In patients with a history of cocaine use, often the integrity of surrounding vasculature is questionable and large defects may not be well suited for local reconstruction. In the otolaryngology literature, several reconstructive options using local tissue and synthetic materials have been described, but there have been no reports of microvascular free flaps utilized in this regard. We present a unique case of a 37-year-old woman with a 3.0 cm × 3.5 cm nasoseptal perforation secondary to cocaine use successfully reconstructed with a temporoparietal fascia free flap anastomosed to the facial artery and vein. Postoperatively, the patient had a well-healed septal defect from the free flap reconstruction This new technique shows promise as a feasible option for patients with large defects and for those with limited local reconstructive options. The ease of harvest and low donor-site morbidity make the temporoparietal fascia flap a suitable option for repair of complex nasoseptal defects.

8.
Am J Otolaryngol ; 39(3): 352-354, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29519647

RESUMO

IMPORTANCE: Transoral robotic surgery has revolutionized the practice of head and neck surgery over the past decade, with indications now expanding to include laryngeal pathology. Although laryngeal chondrosarcoma is a rare entity, trends in otolaryngology literature suggest that it can frequently be managed with conservative approaches. We hope to inspire other head and neck surgeons to consider transoral robotic surgery for the treatment of such tumors so that outcomes data can be collected and studied. OBSERVATION: An 87-year-old male presented with a left-sided supraglottic mass that was found incidentally on imaging performed for an unrelated reason. Flexible fiberoptic laryngoscopy revealed a cystic-appearing supraglottic mass with near complete obstruction of the glottis airway. Internal review of the imaging demonstrated a 3.5 by 2.3 by 2.8 cm centrally hypodense lesion with a rim of calcification in the left paraglottic space, with resultant narrowing of the laryngeal airway. INTERVENTION: The patient underwent awake tracheostomy and transoral robotic subtotal resection of the mass using the Da Vinci surgical system (Intuitive Surgical Inc., Sunnyvale, CA, USA). The vocal folds, ventricular mucosa, and arytenoid cartilage were grossly preserved. Final pathology revealed a low-grade cartilaginous neoplasm consistent with low-grade chondrosarcoma. CONCLUSIONS AND RELEVANCE: Chondrosarcoma of the larynx is a rare entity that accounts for roughly 1% of laryngeal neoplasms. Recent trends in otolaryngology literature and practice suggest that low-grade chondrosarcomas can be effectively treated with organ-preserving, conservative surgery. Transoral robotic surgery offers numerous advantages over both open and endoscopic approaches. To our knowledge, this is the first report in the literature describing the successful use of transoral robotic surgery for the resection of a laryngeal chondrosarcoma.


Assuntos
Condrossarcoma/cirurgia , Neoplasias Laríngeas/cirurgia , Cirurgia Endoscópica por Orifício Natural/instrumentação , Tratamentos com Preservação do Órgão/métodos , Procedimentos Cirúrgicos Robóticos/métodos , Idoso de 80 Anos ou mais , Condrossarcoma/patologia , Seguimentos , Humanos , Neoplasias Laríngeas/patologia , Laringectomia/métodos , Laringoscopia/métodos , Masculino , Procedimentos Cirúrgicos Minimamente Invasivos/métodos , Medição de Risco , Fatores de Tempo , Traqueostomia/métodos , Resultado do Tratamento
10.
HPB (Oxford) ; 15(6): 418-27, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23458127

RESUMO

BACKGROUND: In cirrhotic patients with hepatocellular carcinoma (HCC), poor differentiation in pre-liver transplantation (LT) biopsy of the largest tumour is used as a criterion for exclusion from LT in some centres. The potential role of pre-LT biopsy at one centre was explored. METHODS: A prospective database of patients undergoing orthotopic LT for radiologically diagnosed HCC at St James's University Hospital, Leeds during 2006-2011 was analysed. RESULTS: A total of 60 predominantly male (85.0%) patients with viral hepatitis were identified. There were discrepancies between radiological and histopathological findings with respect to the number of tumours identified (in 27 patients, 45.0%) and their size (in 63 tumours, 64.3%). In four (6.7%) patients, the largest lesion, which would theoretically have been targeted for biopsy, was not the largest in the explant. Nine (31.0%) patients with multifocal HCC had tumours of differing grades. In two (6.9%) patients, the largest tumour was well differentiated, but smaller tumours in the explant were poorly differentiated. In one patient, the largest lesion was benign and smaller invasive tumours were confirmed histologically. CONCLUSIONS: The need to optimize selection for LT in HCC remains. In the present series, the largest tumour was not always representative of overall tumour burden or biological aggression and its potential use to exclude patients from LT is questionable.


Assuntos
Biópsia , Carcinoma Hepatocelular/patologia , Carcinoma Hepatocelular/cirurgia , Técnicas de Apoio para a Decisão , Neoplasias Hepáticas/patologia , Neoplasias Hepáticas/cirurgia , Transplante de Fígado , Neoplasias Primárias Múltiplas/patologia , Neoplasias Primárias Múltiplas/cirurgia , Seleção de Pacientes , Adulto , Idoso , Carcinoma Hepatocelular/diagnóstico por imagem , Carcinoma Hepatocelular/mortalidade , Diferenciação Celular , Inglaterra , Feminino , Humanos , Estimativa de Kaplan-Meier , Neoplasias Hepáticas/diagnóstico por imagem , Neoplasias Hepáticas/mortalidade , Transplante de Fígado/efeitos adversos , Transplante de Fígado/mortalidade , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Gradação de Tumores , Invasividade Neoplásica , Neoplasias Primárias Múltiplas/diagnóstico por imagem , Neoplasias Primárias Múltiplas/mortalidade , Valor Preditivo dos Testes , Cuidados Pré-Operatórios , Modelos de Riscos Proporcionais , Radiografia , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Centros de Atenção Terciária , Carga Tumoral
11.
Oncologist ; 17(10): 1225-39, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22962059

RESUMO

An international panel of multidisciplinary experts convened to develop recommendations for the management of patients with liver metastases from colorectal cancer (CRC). The aim was to address the main issues facing the CRC hepatobiliary multidisciplinary team (MDT) when managing such patients and to standardize the treatment patients receive in different centers. Based on current evidence, the group agreed on a number of issues including the following: (a) the primary aim of treatment is achieving a long disease-free survival (DFS) interval following resection; (b) assessment of resectability should be performed with high-quality cross-sectional imaging, staging the liver with magnetic resonance imaging and/or abdominal computed tomography (CT), depending on local expertise, staging extrahepatic disease with thoracic and pelvic CT, and, in selected cases, fluorodeoxyglucose positron emission tomography with ultrasound (preferably contrast-enhanced ultrasound) for intraoperative staging; (c) optimal first-line chemotherapy-doublet or triplet chemotherapy regimens combined with targeted therapy-is advisable in potentially resectable patients; (d) in this situation, at least four courses of first-line chemotherapy should be given, with assessment of tumor response every 2 months; (e) response assessed by the Response Evaluation Criteria in Solid Tumors (conventional chemotherapy) or nonsize-based morphological changes (antiangiogenic agents) is clearly correlated with outcome; no imaging technique is currently able to accurately diagnose complete pathological response but high-quality imaging is crucial for patient management; (f) the duration of chemotherapy should be as short as possible and resection achieved as soon as technically possible in the absence of tumor progression; (g) the number of metastases or patient age should not be an absolute contraindication to surgery combined with chemotherapy; (h) for synchronous metastases, it is not advisable to undertake major hepatic surgery during surgery for removal of the primary CRC; the reverse surgical approach (liver first) produces as good an outcome as the conventional approach in selected cases; (i) for patients with resectable liver metastases from CRC, perioperative chemotherapy may be associated with a modestly better DFS outcome; and (j) whether initially resectable or unresectable, cure or at least a long survival duration is possible after complete resection of the metastases, and MDT treatment is essential for improving clinical and survival outcomes. The group proposed a new system to classify initial unresectability based on technical and oncological contraindications.


Assuntos
Neoplasias Colorretais/patologia , Neoplasias Colorretais/cirurgia , Neoplasias Hepáticas/secundário , Neoplasias Hepáticas/cirurgia , Neoplasias Colorretais/diagnóstico por imagem , Neoplasias Colorretais/tratamento farmacológico , Terapia Combinada , Intervalo Livre de Doença , Humanos , Neoplasias Hepáticas/diagnóstico por imagem , Neoplasias Hepáticas/tratamento farmacológico , Metanálise como Assunto , Radiografia , Ensaios Clínicos Controlados Aleatórios como Assunto
12.
AJR Am J Roentgenol ; 199(4): W486-95, 2012 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-22997398

RESUMO

OBJECTIVE: The Magnetic Resonance Imaging and Rectal Cancer European Equivalence (MERCURY) Study validated the use of MRI for posttreatment staging and its correlation with survival outcomes. As a consequence, reassessment of MRI scans after preoperative therapy has implications for surgical planning, the timing of surgery, sphincter preservation, deferral of surgery for good responders, and development of further preoperative treatments for radiologically identified poor responders. CONCLUSION: In this article we report a validated systematic approach to the interpretation of MR images of patients with rectal cancer after chemoradiation.


Assuntos
Quimiorradioterapia , Imageamento por Ressonância Magnética , Neoplasias Retais/diagnóstico , Meios de Contraste , Humanos , Imageamento por Ressonância Magnética/instrumentação , Imageamento por Ressonância Magnética/métodos , Terapia Neoadjuvante , Estadiamento de Neoplasias , Neoplasias Retais/patologia , Neoplasias Retais/cirurgia , Neoplasias Retais/terapia
13.
Anat Rec (Hoboken) ; 294(10): 1713-25, 2011 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-21905241

RESUMO

Reduced sociability is a core feature of autism spectrum disorders (ASD) and is highly disabling, poorly understood, and treatment refractory. To elucidate the biological basis of reduced sociability, multiple laboratories are developing ASD-relevant mouse models in which sociability is commonly assessed using the Social Choice Test. However, various measurements included in that test sometimes support different conclusions. Specifically, measurements of time the "test" mouse spends near a confined "stimulus" mouse (chamber scores) sometimes support different conclusions from measurements of time the test mouse sniffs the cylinder containing the stimulus mouse (cylinder scores). This raises the question of which type of measurements are best for assessing sociability. We assessed the test-retest reliability and ecological validity of chamber and cylinder scores. Compared with chamber scores, cylinder scores showed higher correlations between test and retest measurements, and cylinder scores showed higher correlations with time spent in social interaction in a more naturalistic phase of the test. This suggests that cylinder scores are more reliable and valid measures of sociability in mouse models. Cylinder scores are reported less commonly than chamber scores, perhaps because little work has been done to establish automated software systems for measuring the former. In this study, we found that a particular automated software system performed at least as well as human raters at measuring cylinder scores. Our data indicate that cylinder scores are more reliable and valid than chamber scores, and that the former can be measured very accurately using an automated video analysis system in ASD-relevant models.


Assuntos
Transtorno Autístico/fisiopatologia , Comportamento Animal , Modelos Animais de Doenças , Comportamento Social , Animais , Feminino , Humanos , Masculino , Camundongos , Camundongos Endogâmicos BALB C , Camundongos Endogâmicos C57BL , Camundongos Endogâmicos DBA , Fenótipo
14.
J Clin Oncol ; 29(28): 3753-60, 2011 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-21876084

RESUMO

PURPOSE: To assess magnetic resonance imaging (MRI) and pathologic staging after neoadjuvant therapy for rectal cancer in a prospectively enrolled, multicenter study. METHODS: In a prospective cohort study, 111 patients who had rectal cancer treated by neoadjuvant therapy were assessed for response by MRI and pathology staging by T, N and circumferential resection margin (CRM) status. Tumor regression grade (TRG) was also assessed by MRI. Overall survival (OS) was estimated by using the Kaplan-Meier product-limit method, and Cox proportional hazards models were used to determine associations between staging of good and poor responders on MRI or pathology and survival outcomes after controlling for patient characteristics. RESULTS: On multivariate analysis, the MRI-assessed TRG (mrTRG) hazard ratios (HRs) were independently significant for survival (HR, 4.40; 95% CI, 1.65 to 11.7) and disease-free survival (DFS; HR, 3.28; 95% CI, 1.22 to 8.80). Five-year survival for poor mrTRG was 27% versus 72% (P = .001), and DFS for poor mrTRG was 31% versus 64% (P = .007). Preoperative MRI-predicted CRM independently predicted local recurrence (LR; HR, 4.25; 95% CI, 1.45 to 12.51). Five-year survival for poor post-treatment pathologic T stage (ypT) was 39% versus 76% (P = .001); DFS for the same was 38% versus 84% (P = .001); and LR for the same was 27% versus 6% (P = .018). The 5-year survival for involved pCRM was 30% versus 59% (P = .001); DFS, 28 versus 62% (P = .02); and LR, 56% versus 10% (P = .001). Pathology node status did not predict outcomes. CONCLUSION: MRI assessment of TRG and CRM are imaging markers that predict survival outcomes for good and poor responders and provide an opportunity for the multidisciplinary team to offer additional treatment options before planning definitive surgery. Postoperative histopathology assessment of ypT and CRM but not post-treatment N status were important postsurgical predictors of outcome.


Assuntos
Neoplasias Retais/patologia , Neoplasias Retais/radioterapia , Idoso , Estudos de Coortes , Intervalo Livre de Doença , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Terapia Neoadjuvante , Estadiamento de Neoplasias , Estudos Prospectivos , Radioterapia Adjuvante , Neoplasias Retais/cirurgia , Taxa de Sobrevida
15.
Pituitary ; 13(2): 183-5, 2010 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-18800246

RESUMO

Chronic hydrocephalus, most commonly the result of aqueduct stenosis, is associated with both primary and secondary amenorrhea. Only six cases of secondary amenorrhea have been reported to date. We describe a women with cystic fibrosis who presented with secondary amenorrhea as a consequence of Chiari-I malformation and resultant hydrocephalus. The biochemical picture was characterized by hypogonadotropic hypogonadism. Resolution of the amenorrhea was observed to occur following 3rd ventriculostomy.


Assuntos
Malformação de Arnold-Chiari/complicações , Hipogonadismo/diagnóstico , Hipogonadismo/etiologia , Amenorreia/patologia , Amenorreia/cirurgia , Feminino , Humanos , Hipogonadismo/patologia , Hipogonadismo/cirurgia , Ventriculostomia , Adulto Jovem
17.
J Pediatr Surg ; 40(2): 322-6, 2005 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-15750923

RESUMO

BACKGROUND/PURPOSE: The aim of this paper was to investigate the mechanism of long-term biliary drainage after Kasai portoenterostomy by clinicopathologic study of hepatic morphology in explanted livers. METHODS: Explanted livers from 13 consecutive children undergoing transplantation for biliary atresia were examined in detail using a standardized protocol. Group 1 (n = 6) had no Kasai procedure before transplantation at a median age of 8 m. Group 2 (n = 4) were transplanted at a median age of 10 m after a failed Kasai portoenterostomy. Group 3 (n = 3) had a successful Kasai but required transplantation for complications of chronic liver disease at 12-14 years. Pathology findings were correlated with hepatic morphology determined by pretransplant magnetic resonance imaging. RESULTS: Large perihilar regenerative nodules (8-14 cm diameter) were observed in 2 patients after successful Kasai portoenterostomy, less well-defined perihilar nodules in group 2 patients, and no regenerative nodules in group 1. Microscopically, group 1 had diffuse biliary cirrhosis with evidence of progressive ductopenia during infancy. In group 2, perihilar regenerative nodules showed variable portal fibrosis but no cirrhosis and bile ducts were present with 68%-100% of hepatic arteries; in peripheral cirrhotic areas, bile ducts were absent in patients older than 9 m. The perihilar regenerative nodules in group 3 patients had a noncirrhotic architecture with preserved bile ducts, but the peripheral parenchyma was cirrhotic; one patient had diffuse macronodular cirrhosis. These morphologic findings correlated well with magnetic resonance images, highlighting the preservation of relatively normal perihilar liver architecture after successful Kasai portoenterostomy. CONCLUSIONS: Unoperated biliary atresia is associated with progressive intrahepatic ductopenia leading to diffuse biliary cirrhosis. Kasai portoenterostomy can result in the growth of large perihilar regenerative nodules, probably as a consequence of surviving intrahepatic ducts in this region. In some patients, long-term success after Kasai portoenterostomy may depend on hyperplasia of the perihilar liver.


Assuntos
Ductos Biliares Intra-Hepáticos/patologia , Atresia Biliar/complicações , Atresia Biliar/cirurgia , Cirrose Hepática Biliar/patologia , Transplante de Fígado , Portoenterostomia Hepática , Adolescente , Hepatectomia , Artéria Hepática/patologia , Humanos , Lactente , Cirrose Hepática Biliar/etiologia , Cirrose Hepática Biliar/cirurgia , Regeneração Hepática , Imageamento por Ressonância Magnética , Complicações Pós-Operatórias
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