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In this study predictions of the dual-route cascaded (DRC) model of word reading were tested using fMRI. Specifically, patterns of co-localization were investigated: (a) between pseudoword length effects and a pseudowords vs. fixation contrast, to reveal the sublexical grapho-phonemic conversion (GPC) system; and (b) between word frequency effects and a words vs. pseudowords contrast, to reveal the orthographic and phonological lexicon. Forty four native speakers of Greek were scanned at 3T in an event-related lexical decision task with three event types: (a) 150 words in which frequency, length, bigram and syllable frequency, neighborhood, and orthographic consistency were decorrelated; (b) 150 matched pseudowords; and (c) fixation. Whole-brain analysis failed to reveal the predicted co-localizations. Further analysis with participant-specific regions of interest defined within masks from the group contrasts revealed length effects in left inferior parietal cortex and frequency effects in the left middle temporal gyrus. These findings could be interpreted as partially consistent with the existence of the GPC system and phonological lexicon of the model, respectively. However, there was no evidence in support of an orthographic lexicon, weakening overall support for the model. The results are discussed with respect to the prospect of using neuroimaging in cognitive model evaluation.
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Encéfalo/fisiologia , Reconhecimento Visual de Modelos/fisiologia , Leitura , Adulto , Feminino , Humanos , Processamento de Imagem Assistida por Computador , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Reconhecimento Psicológico/fisiologia , Adulto JovemRESUMO
UNLABELLED: BACKROUND-AIMS: To determine long term outcomes, regarding recurrence and survival, in patients with HCC that achieved complete response after initial treatment with drug eluting beads (DEB) using DC Bead loaded with doxorubicin (DEB-DOX). METHODOLOGY: Forty-five patients with HCC, not suitable for curative treatments that exhibited complete response (EASL criteria) to initial DEB-DOX treatment were retrospectively analyzed after a median follow up period of 63 months. Child-Pugh class was A/B (62.2/37.8%) and mean lesion diameter 5.36 ± 1.1 cm. Lesion morphology was one dominant ≤5cm (53.3%), one dominant >5cm (31.1%) and multifocal (15.6%). RESULTS: At 5 years, overall survival was 62.2% and recurrence-free survival 8.9%. All deaths that occurred were related to tumor progression (31.1%) or complications of underlying liver disease (28.9%). Median time of initial recurrence from baseline treatment was 18 months (range 8-52). When recurrence occurred, a mean time interval between additional DEB-DOX procedures less than 9 months was correlated to a poorer prognosis (p=0.025). Multivariate analysis identified Child-Pugh class at baseline (p=0.048), combined therapy of recurrences with local ablation (p=0.03) and number of DEB-DOX procedures (p=0.037) as significant prognostic factors of 5-year survival. Lesion morphology displayed significance for recurrence-free survival (p=0.014). Child-Pugh class at baseline, additional local ablation, pattern of initial recurrence and initial sum of recurrent tumor diameters all displayed statistical significance for post-recurrence survival (median 40 months), with the first two variables maintaining statistical significance in multivariate analysis (p=0.015 and p=0.014 respectively). CONCLUSION: Initial complete response to DEB-DOX ensures a favorable prognosis. However, management of recurrent tumors, which occur frequently mostly as new lesions, and preservation of underlying liver function appear to play a key role in prolonging survival.
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Carcinoma Hepatocelular/terapia , Quimioembolização Terapêutica/métodos , Doxorrubicina/administração & dosagem , Neoplasias Hepáticas/terapia , Recidiva Local de Neoplasia/epidemiologia , Idoso , Carcinoma Hepatocelular/mortalidade , Feminino , Humanos , Neoplasias Hepáticas/mortalidade , Masculino , Pessoa de Meia-Idade , Estudos RetrospectivosRESUMO
BACKGROUND/AIMS: The investigation of post embolization syndrome (PES) in patients with hepatocellular carcinoma (HCC) after treatment with doxorubicin loaded DC Bead (DEB-DOX). METHODOLOGY: The study included 237 patients treated with sequential DEB-TACE performed at set time intervals every two months until 3 sessions/6 month f-u. Patients were ECOG 0-1, Child-Stage-A (n=116, 48.9%) and B (n=121, 51%). Embolizations were as selective as possible with DC Bead of 100-300µm in diameter followed by 300-500µm loaded with doxorubicin at 37.5mg/mL of hydrated bead (max:150mg). RESULTS: PES regardless of severity was observed in up to 86.5%. However grade 2 PES ranged between 25% and 42.19% across treatments. Temperatures above 38°C were seen in 22.7% to 38.3% across treatments. No statistically significant increase of PES was seen in beads of 100-300µm in diameter; incidence of fever and pain presented correlation with the extent of embolization (p=0.0001-0.006 across treatments). Baseline tumor diameter was associated with incidence of fever (p=0.0001-0.001). Duration of fever correlated with the extent of embolization (p=0.008). PES was not associated with elevation of liver enzymes and was correlated with degree of necrosis (p<0.001). CONCLUSIONS: PES after DEB-DOX represents tumor response to treatment and does not represent collateral healthy liver damage.
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Antibióticos Antineoplásicos/efeitos adversos , Carcinoma Hepatocelular/tratamento farmacológico , Quimioembolização Terapêutica/efeitos adversos , Doxorrubicina/efeitos adversos , Neoplasias Hepáticas/tratamento farmacológico , Dor Abdominal/etiologia , Idoso , Idoso de 80 Anos ou mais , Antibióticos Antineoplásicos/administração & dosagem , Carcinoma Hepatocelular/irrigação sanguínea , Carcinoma Hepatocelular/diagnóstico , Meios de Contraste , Doxorrubicina/administração & dosagem , Portadores de Fármacos , Fadiga/etiologia , Feminino , Febre/etiologia , Grécia , Humanos , Neoplasias Hepáticas/irrigação sanguínea , Neoplasias Hepáticas/diagnóstico , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Náusea/etiologia , Tamanho da Partícula , Estudos Prospectivos , Síndrome , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Vômito/etiologiaRESUMO
The authors describe the case of a patient with hepatocellular carcinoma and portal vein (PV) tumor thrombus. Radiofrequency (RF) ablation was applied successfully not only to the main tumor but also directly to the invaded PV. On the last imaging follow-up performed at 16 months after RF ablation the PV remained recanalized. Twenty months after the RF ablation, the patient was still alive with good clinical status.
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Carcinoma Hepatocelular/cirurgia , Ablação por Cateter , Neoplasias Hepáticas/cirurgia , Veia Porta/cirurgia , Trombose Venosa/cirurgia , Idoso , Carcinoma Hepatocelular/complicações , Carcinoma Hepatocelular/diagnóstico por imagem , Carcinoma Hepatocelular/patologia , Humanos , Neoplasias Hepáticas/complicações , Neoplasias Hepáticas/diagnóstico por imagem , Neoplasias Hepáticas/patologia , Masculino , Invasividade Neoplásica , Veia Porta/diagnóstico por imagem , Veia Porta/patologia , Fatores de Tempo , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Trombose Venosa/diagnóstico por imagem , Trombose Venosa/etiologia , Trombose Venosa/patologiaRESUMO
PURPOSE: Time changes in plasma concentrations of six different cytokines were investigated to evaluate the inflammatory response to renal artery stent placement. MATERIALS AND METHODS: A total of 22 patients (17 men; mean age, 66 years +/- 13) with ostial renal artery stenosis and poorly controlled hypertension treated with stent placement were studied. Blood samples were collected at baseline and at 24 hours and 6 months after the intervention. Plasma concentrations of (i) tumor necrosis factor-alpha, (ii) interleukin-6 (IL-6), (iii) monocyte chemoattractant protein-1, (iv) intercellular adhesion molecule-1, (v) vascular cell adhesion molecule-1, and (vi) regulated upon activatin normal T-cell expressed presumed secreted were measured. Restenosis diagnosed with imaging follow-up at 6 months was recorded. Plasma concentrations of the aforementioned cytokines were compared between patients with and without restenosis. RESULTS: IL-6 concentration increased significantly 24 hours after stent placement (8.3 pg/mL +/- 1.24 vs. 2.76 pg/mL +/- 1.27 at baseline) and returned to baseline levels (2.6 pg/mL +/- 1.77) at 6-month follow-up (P < .0001). No significant changes occurred in the concentrations of any other cytokines at the three time points. Baseline and 6-month concentrations of IL-6 were significantly higher in patients with restenosis than in those without restenosis (8.13 pg/mL +/- 4 vs 0.75 pg/mL +/- 0.47 [P < .005] and 9.55 pg/mL +/- 6.5 vs 0.42 pg/mL +/- 0.35 [P < .02], respectively). CONCLUSIONS: Renal artery angioplasty with stent placement induces an inflammatory response, as evidenced by increased IL-6 production. Additionally, IL-6 seems to identify patients prone to develop restenosis; therefore, it might be used as an early predictor of restenosis after renal angioplasty with stent placement. However, larger studies are required to confirm IL-6 as a potential predictor of restenosis.
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Prótese Vascular/efeitos adversos , Citocinas/sangue , Oclusão de Enxerto Vascular/etiologia , Oclusão de Enxerto Vascular/imunologia , Inflamação/etiologia , Inflamação/imunologia , Obstrução da Artéria Renal/imunologia , Obstrução da Artéria Renal/cirurgia , Stents/efeitos adversos , Adulto , Idoso , Idoso de 80 Anos ou mais , Angioplastia/efeitos adversos , Angioplastia/instrumentação , Angioplastia/métodos , Biomarcadores/sangue , Feminino , Oclusão de Enxerto Vascular/diagnóstico , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do TratamentoRESUMO
Port-a-cath systems are often essential for the administration of long-term chemotherapy in the treatment of malignancies because they improve venous access, but they are associated with complications, mainly thrombosis of central veins. In the present report, we describe a case of right subclavian and superior vena cava port-a-cath-related thrombosis causing superior vena cava syndrome (SVCS) in a patient affected by Hodgkin's disease. The patient underwent percutaneous revascularization with stent positioning, experiencing immediate relief of symptoms. Endovascular procedures for the treatment of nonmalignant SVCS seem to represent a challenging therapeutic option.
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Cateteres de Demora/efeitos adversos , Stents , Síndrome da Veia Cava Superior/complicações , Trombose/terapia , Feminino , Doença de Hodgkin/complicações , Humanos , Pessoa de Meia-Idade , Síndrome da Veia Cava Superior/diagnóstico por imagem , Síndrome da Veia Cava Superior/terapia , Trombose/etiologia , Tomografia Computadorizada por Raios XRESUMO
BACKGROUND: Treating patients with hepatocellular carcinoma (HCC) remains a challenge, especially when the disease presents at an advanced stage. The aim of this retrospective study was to determine the efficacy of liver resection in patients who fulfil or exceed University of California San Francisco (UCSF) criteria by assessing longterm outcome. METHODS: Between 2002 and 2008, 59 patients with large HCC (>5 cm) underwent hepatectomy. Thirty-two of these patients fulfilled UCSF criteria for transplantation (group A) and 27 did not (group B). Disease-free survival and overall survival rates were compared between the two groups after resection and were critically evaluated with regard to patient eligibility for transplant. RESULTS: In all patients major or extended hepatectomies were performed. There was no perioperative mortality. Morbidity consisted of biliary fistula, abscess, pleural effusion and pneumonia and was significantly higher in patient group B. Disease-free survival rates at 1, 3 and 5 years were 66%, 37% and 34% in group A and 56%, 29% and 26% in group B, respectively (P < 0.01). Survival rates at 1, 3 and 5 years were 73%, 39% and 35% in group A and 64%, 35% and 29% in group B, respectively (P= 0.04). The recurrence rate was higher in group B (P= 0.002). CONCLUSIONS: Surgical resection, if feasible, is suggested in patients with large HCC and can be performed with acceptable overall and disease-free survival and morbidity rates. In patients eligible for transplantation, resection may also have a place in the management strategy when waiting list time is prolonged for reasons of organ shortage or when the candidate has low priority as a result of a low MELD (model for end-stage liver disease) score.
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PURPOSE: To examine the results of segmental transcatheter arterial chemoembolization with doxorubicin-loaded DC Bead in the treatment of hepatocellular carcinoma (HCC) in non-surgical candidates. MATERIAL AND METHODS: Seventy-one patients (60% men; 11% women; mean age 63; range 46-71 years) with documented HCC of 3-10 cm in diameter (mean 6.2) were enrolled prospectively in the study. All patients had cirrhosis-related HCC that was developed on an underlying controlled hepatitis infection. Only patients with compensated cirrhosis--Child A or B--were included in this study. RESULTS: Overall complete response (CR) according to EASL on an intention to treat basis was seen in 11 patients who developed complete necrosis (15.5%). Objective response (OR) ranged from 66.2% to 85.5% across the four treatments. Survival at 12 months was 97.05%. Sustained CR was observed in 11 (16.1%), and OR in 49 (72%). Sustained partial response was seen in 49 patients (72.05%). Survival at 18 months was 94.1%. At 24 months follow-up survival was 91.1%. Sustained OR was seen in 45 patients (66.2%) while sustained CR was 16.1% (11/68). At 30 months survival was 88.2%. One patient with CR developed multifocal HCC in areas that most likely were not embolized during the previous embolization sessions. In this patient recurrence-free survival was 28 months. Alpha Fetroprotein levels decreased significantly in measurements 1 month post each procedure (p < 0.001). Bilirubin, gamma-GT, aspartate aminotransferase, alanine aminotransferase, and alkaline phosphatase (ALP) showed only transient increases observed during the study period. Severe procedure-related complications were seen in 4.2% (cholecystitis: n = 1; liver abscess: n = 1; pleural effusion: n = 1). Post Embolization Syndrome (PES) was observed in all patients. CONCLUSION: Transcatheter arterial chemoembolization with DC Bead is an effective and safe procedure in the treatment of HCC patients not eligible for curative treatments with high rates of response and high rates of mid term survival.
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Antibióticos Antineoplásicos/administração & dosagem , Carcinoma Hepatocelular/terapia , Quimioembolização Terapêutica/métodos , Doxorrubicina/administração & dosagem , Neoplasias Hepáticas/terapia , Idoso , Feminino , Humanos , Cirrose Hepática/terapia , Testes de Função Hepática , Imageamento por Ressonância Magnética , Masculino , Microesferas , Pessoa de Meia-Idade , Estudos Prospectivos , Taxa de Sobrevida , Tomografia Computadorizada por Raios X , Resultado do TratamentoRESUMO
Acute lower gastrointestinal bleeding, is often a dramatic situation, associated with mortality rate up to 28%. Currently transcatheter alternatives have found their place in the therapeutic spectrum of this situation. An interesting question is when should this procedure be performed and which are the difficulties when performing it. We present the case of a 75-year old woman with acute massive lower gastrointestinal bleeding on the tenth post-operative day of a colic and partial ileal resection. Superselective angiography of the superior mesenteric artery was obtained that disclosed marked contrast extravasation of distal branches of the left colic artery as well as from a small branch feeding the distal enteric anastomoses. Clinical success was achieved after superselective embolization which was accomplished by using polyvinyl alcohol particles. The patient was discharged 5 days later and there were no procedure-related complications during 6-month follow-up period. So, especially in post-operative patients who are considered to be poor candidates for surgical treatment, arterial embolotherapy should be established not only as treatment option, but also as first line therapy for LGI bleeding.
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Embolização Terapêutica/métodos , Hemorragia Gastrointestinal/terapia , Álcool de Polivinil/administração & dosagem , Doença Aguda , Idoso , Anastomose Cirúrgica/efeitos adversos , Angiografia , Cateterismo , Embolização Terapêutica/instrumentação , Extravasamento de Materiais Terapêuticos e Diagnósticos/terapia , Feminino , Seguimentos , Hemorragia Gastrointestinal/diagnóstico por imagem , Hemorragia Gastrointestinal/etiologia , Humanos , Artéria Mesentérica Superior/diagnóstico por imagem , Hemorragia Pós-Operatória/terapia , Fatores de TempoRESUMO
This is a prospective study with the purpose of assessing patient radiation dose and stochastic risk (risk for fatal cancer) in a patient population undergoing interventional radiological (IR) procedures. Measurements were performed on 36 consecutive patients undergoing percutaneous transluminal angioplasty (PTA, n=18), transjugular intrahepatic portosystemic shunt (TIPS, n=3), diagnostic angiography (DA, n=6), arterial embolization (AE, n=3), and hepatic neoplasm chemoembolization (HCE, n=6). Kerma area product (KAP) was used as a measure of x-ray exposure to the patient. Mean KAP value per procedure was 79+/-50 Gy cm for PTA, 139+/-55 Gy cm for TIPS, 110+/-44 Gy cm for DA, 325+/-145 Gy cm for AE, and 150+/-76 Gy cm for HCE. Forty-six percent of total KAP value was attributed to fluoroscopy. In conclusion, we showed that a linear correlation between effective dose and KAP was found (r=0.84), which could be used for estimating patient effective dose using KAP measurements. Small changes to the number of digital frames acquired result in substantial change of the total KAP in interventional radiological procedures. Stochastic risk from IR procedures is quite low for the patient. Measuring KAP is a simple and accurate method, which provides the interventional radiologist with a good estimation of the patient's relative risk for stochastic effects.
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Exposição Ambiental/estatística & dados numéricos , Neoplasias Induzidas por Radiação/mortalidade , Lesões por Radiação/mortalidade , Radiografia/estatística & dados numéricos , Medição de Risco/métodos , Cirurgia Assistida por Computador/estatística & dados numéricos , Idoso , Feminino , Grécia/epidemiologia , Humanos , Incidência , Masculino , Estudos Prospectivos , Doses de Radiação , Proteção Radiológica/métodosRESUMO
Acromegaly is caused by excessive growth hormone secretion, usually from a pituitary adenoma. The use of somatostatin analogues as primary or adjunctive therapy has been widely applied in the management of acromegaly. We are aware of only three reported cases of complete shrinkage of a pituitary adenoma after long-term analogue administration. However in these cases, the reduction in the dimension of the adenoma was obtained with the everyday use of somatostatin analogues and not with the newer longer acting formulations. We report a patient in whom long term (62 months) lanreotide-L.A.R administration resulted in complete disappearance of a growth hormone secreting pituitary macroadenoma, followed by recurrence of the adenoma six months post therapy discontinuation.
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Adenoma/metabolismo , Antineoplásicos/administração & dosagem , Hormônio do Crescimento Humano/metabolismo , Recidiva Local de Neoplasia , Peptídeos Cíclicos/administração & dosagem , Neoplasias Hipofisárias/metabolismo , Somatostatina/análogos & derivados , Acromegalia/tratamento farmacológico , Adenoma/tratamento farmacológico , Adenoma/patologia , Feminino , Humanos , Imageamento por Ressonância Magnética , Pessoa de Meia-Idade , Neoplasias Hipofisárias/tratamento farmacológico , Neoplasias Hipofisárias/patologia , Somatostatina/administração & dosagemRESUMO
PURPOSE: This study examines safety, efficacy, and pharmacokinetics of chemoembolization with loadable microspheres ≤100 µm for hepatocellular carcinoma. MATERIALS AND METHODS: A pilot safety study was performed in 19 patients with size and dose escalation and then 52 patients were enrolled prospectively and randomly assigned to chemoembolization with TANDEM™ loaded with 150 or 100 mg of doxorubicin. RESULTS: The mean diameter of the tumors was 7.28 ± 2.09 cm (range 4-12) and distribution dominant/multiple 51.9/48.1 %. Child A/B distribution was 32/20 (61.5/38.5 %) and etiology HBV/HCV/HBV/HCV-hemochromatosis was 61.6/9.6/9.6/15.4 %. Twenty-five patients were assigned in the low and 27 in the high loading group. There was 1.92 % thirty-day mortality due to lesion rupture. Biliary damage was seen in 3 patients (5.7 %) in the high loading. Mean maximum plasma concentration of doxorubicin C max ± SD was 284.9 ± 276.2 ng/mL for the high and 108.5 ± 77.6 ng/mL for the low loading (p < 0.001). According to m-RECIST overall objective response after two sessions reached 61.22 and 63.82 % at 6 months. Notably, complete target lesion response (CR) after the second session was observed in 28.57 % and maintained in 23.40 % at 6 months. No statistical differences in the local response rates were observed between the two loading groups. Overall survival (OS) at 6 months, 1 , 2, and 3 years was 98.08, 92.3, 88.46, and 82.6 %, respectively. OS and Progression-Free Survival did not demonstrate statistical significance between the two loading groups. CONCLUSION: Initial evidence shows that (a) TANDEM™ achieves high rates of local response and mid-term survival, (b) high loading provides no clinical benefit and is associated with biliary toxicity.
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Antibióticos Antineoplásicos/farmacocinética , Carcinoma Hepatocelular/terapia , Quimioembolização Terapêutica/métodos , Doxorrubicina/farmacocinética , Neoplasias Hepáticas/terapia , Idoso , Idoso de 80 Anos ou mais , Antibióticos Antineoplásicos/administração & dosagem , Quimioembolização Terapêutica/efeitos adversos , Intervalo Livre de Doença , Doxorrubicina/administração & dosagem , Feminino , Humanos , Masculino , Microesferas , Pessoa de Meia-Idade , Projetos Piloto , Resultado do TratamentoRESUMO
OBJECTIVE: To prospectively evaluate the diagnostic accuracy of spiral computed tomography (CT) versus ventilation/perfusion (V/Q) scanning in the examination of patients clinically suspected of having pulmonary embolism (PE). PATIENTS AND METHODS: Sixty-three patients, presenting to the emergency department and departments of radiology and nuclear medicine of a large hospital, highly suspected of having PE, underwent sequential imaging testing with V/Q scanning and contrast-enhanced spiral CT, in addition to other clinical and laboratory tests. RESULTS: PE was diagnosed in 42 (66.7%) of the 63 patients. Thirty-nine of these 42 patients had positive findings in their CT scans, while 18 of the remaining 21 patients without PE had negative findings in their spiral CT [sensitivity, 92.9%, specificity, 85.7% Positive Predictive Value (PPV), 92.9%, Negative Predictive Value (NPV), 85.7%]. V/Q scans showed high-probability of PE in 24 of the 42 patients with PE and were negative in 9 of the remaining 21 patients without PE (sensitivity, 571%, specificity, 42.9%, PPV, 66.7%, NPV, 33.3%). There were statistically significant differences in specificity and sensitivity favoring spiral CT among men and women patients or patients > 50 years old. Fifty-four patients (85.7%) rated their satisfaction towards spiral CT as 'good' or 'very good', whereas the respective rate for V/Q scanning was only 14.3%. CONCLUSION: Spiral CT has an excellent sensitivity, specificity, PPV and NPV for the diagnosis of PE and it could be used as the first-line imaging modality in patients suspected of PE.
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Embolia Pulmonar/diagnóstico por imagem , Embolia Pulmonar/diagnóstico , Tomografia Computadorizada Espiral/métodos , Tomografia Computadorizada por Raios X/métodos , Adolescente , Adulto , Idoso , Suscetibilidade a Doenças , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Sensibilidade e Especificidade , Relação Ventilação-PerfusãoRESUMO
BACKGROUND: Computed tomography (CT)-guided liver biopsy using large-caliber cutting needles allows the recovery of larger tissue specimens that are more suitable for establishing histological diagnosis. Yet, large-caliber needles are associated with higher rates of post-biopsy bleeding. The aim of this prospective study was to assess the efficacy and safety of the method, when all of the procedures were performed by experienced radiologists and all patients were carefully evaluated and treated, when needed, before the biopsy. METHODS: A total of 767 consecutive patients with focal hepatic lesions underwent CT-guided liver biopsy during a 5-year period. The procedures were performed in a single center using 18-gauge automated biopsy guns with a 2-cm cutting edge by a team of experienced radiologists (>100 procedures performed by each one before the initiation of the study). Before the procedure, abnormal coagulation indices were corrected, ascites was treated and, in all cases, an adequate parenchymal cuff of normal tissue between the lesion and the capsule was retained. RESULTS: In all cases the extracted specimens were adequate for diagnosis. No major complications (i.e., death or complications requiring surgery, chest tube, or blood transfusions) were observed. Minor complications (i.e., those not requiring medical intervention) were observed in three patients. CONCLUSIONS: Percutaneous CT-guided liver biopsy using an 18-gauge automated needle is a safe and effective procedure. Careful pre-biopsy evaluation and treatment, when needed, and maintenance of an adequate parenchymal cuff between the lesion and the capsule contribute to the safety of the method.
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This review discusses the current data on Hepasphere™ in the treatment of hepatocellular carcinoma. HepaSphere is a drug-loadable microsphere that can be bound with doxorubicin, epirubicin, cisplatin or oxaliplatin. In vitro and in vivo studies confirm lower systemic exposure to the drug and fewer systemic doxorubicin-related side effects. Studies suggest that this technique is better tolerated than conventional lipiodol-based chemoembolization (c-TACE). In intermediate and early stage hepatocellular carcinoma - nonresponsive to curative treatments - complete response and partial response rates range from 22.2 to 48% and 43.7 to 51%, respectively. Studies with survival as an end-point are needed and head-to-head comparisons with other drug-eluting beads are necessary.
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OBJECTIVE: The aim of this article is to describe the high-resolution CT (HRCT) findings in mild cases of fat embolism syndrome (FES). MATERIAL AND METHODS: Nine patients with FES were examined with HRCT of the lungs (collimation, 1 mm/edge-enhancement algorithm). The median age of the patients was 26 years (range, 17 to 35 years). Five cases were included prospectively, and four cases were reviewed retrospectively. Of the major clinical criteria for FES, respiratory signs were present in six patients, CNS signs were present in two patients, and petechiae was present in six patients. HRCT patterns were recorded and analyzed. The type of injury and FES-associated clinical findings were also recorded. RESULTS: HRCT findings included ground-glass opacities in seven patients, associated with thickened interlobular septa in five patients and a patchy distribution resulting in a geographic appearance in four patients. A nodular pattern was observed in two patients. Resolution of the abnormalities occurred within 16.4 days (range, 7 to 25 days). CONCLUSION: The HRCT findings of mild fat embolism consist of bilateral ground-glass opacities and thickening of the interlobular septa. Centrilobular nodular opacities are present in some patients.
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Embolia Gordurosa/diagnóstico por imagem , Embolia Pulmonar/diagnóstico por imagem , Tomografia Computadorizada por Raios X/métodos , Adolescente , Adulto , Embolia Gordurosa/etiologia , Feminino , Fraturas do Fêmur/complicações , Humanos , Masculino , Estudos Prospectivos , Intensificação de Imagem Radiográfica , Estudos RetrospectivosRESUMO
OBJECTIVE: The prolonged use of estrogen therapy is associated with a slightly increased risk of breast cancer. Alternative therapies that are effective in the prevention of menopause, having associated morbidities but no unwanted effects, are of primary interest in the pharmacologic research. The aim of this study was to evaluate the effect of two alternative to estrogens drugs, the selective estrogen receptor modulator raloxifene and the tissue-specific tibolone, on the mammographic appearance of the breast. DESIGN: The study group comprised 131 postmenopausal women aged 41 to 67 years. The women were at least 2 years postmenopausal, free of climacteric symptoms, and at the time of entry to the study had not had therapy for at least 9 months. Women with risk factors for osteoporosis or cardiovascular disease were allocated either to tibolone (n = 56) or raloxifene (n = 48) therapy. Women with no risk factors and women who either did not qualify for or denied treatment (n = 27) served as controls. The study duration was 12 months. Women received a baseline mammogram before commencing therapy and a repeat mammogram at the end of the study period. Mammogram findings were classified according to the modified Wolfe criteria by two expert radiologists. RESULTS: No difference was identified between groups with respect to baseline characteristics associated with breast cancer risk. Similarly, no difference was detected between groups concerning the modified Wolfe classification of baseline mammographic findings. In the tibolone group, 10.7% of the women showed an increase in breast density in the 12-month reevaluation. The respective figure in the raloxifene group was 6.3%, whereas no woman in the control group showed an increase in breast density. Differences in the increase in breast density between groups did not, however, reach statistical significance. Accordingly, 10.7% of women in the tibolone group and 18.8% of women in the raloxifene group exhibited involutionary changes in the repeat mammogram, whereas 25.9% of women in the control group revealed a decrease in breast density in the 12-month examination. The percentages were not significantly different between groups. CONCLUSIONS: Breast density as shown by mammography was stable in a majority of patients and changed in a minority of cases for both tibolone and raloxifene. In most patients, these drugs are not likely to interfere with mammogram interpretation. Larger long-term studies are needed to confirm the impact of prolonged tibolone or raloxifene administration on mammography.
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Mama/efeitos dos fármacos , Moduladores de Receptor Estrogênico/farmacologia , Terapia de Reposição de Estrogênios , Norpregnenos/farmacologia , Cloridrato de Raloxifeno/farmacologia , Adulto , Idoso , Feminino , Humanos , Mamografia , Pessoa de Meia-Idade , Pós-Menopausa , Estudos ProspectivosRESUMO
Careful monitoring of regional lymph nodes and early detection of metastases in malignant melanoma patients has an impact on their survival, since it may permit beneficial surgical therapy. Palpation is routinely used in clinical practice. The value of ultrasonography for routine follow-up of melanoma patients, still, is not generally accepted. The aim of our study was to assess the sensitivity and specificity of ultrasound and clinical examination respectively, in the detection of melanoma regional node metastases. Additionally, we evaluated whether early detection of metastases improved overall survival. One hundred and forty-eight melanoma patients with an intermediate or thick primary lesion were followed between January 1997 and May 2001. Clinical examination and concomitant regional lymph node ultrasonography were performed, every 3-4 months. If suspicious findings were identified, regional lymph node dissection was undertaken. Forty-four from the initial 148 patients relapsed with regional lymph nodal metastases. In 11 patients (25%) palpation failed to reveal the disease and metastases were depicted only by ultrasonography. In only 1 patient ultrasonography was false-negative. The sensitivity and specificity of palpation were 72.7 and 97% respectively, while those of ultrasonography were 97.7 (p<0.001) and 98% respectively. Ultrasonography was more sensitive in detecting lymph node metastases in the axilla (100%) and the groin (93.3%). When overall survival of patients presenting with local-regional recurrence was calculated--depending on the number of involved lymph nodes--a survival benefit (p<0.05) was found for patients with only one lymph node metastasis. In conclusion, ultrasonography is superior to clinical examination in the early detection of regional lymph node metastases from an intermediate or thick malignant melanoma and should be a part of those patients' surveillance.
Assuntos
Linfonodos/diagnóstico por imagem , Melanoma/diagnóstico por imagem , Recidiva Local de Neoplasia/diagnóstico por imagem , Neoplasias Cutâneas/diagnóstico por imagem , Adulto , Idoso , Idoso de 80 Anos ou mais , Axila , Feminino , Seguimentos , Humanos , Excisão de Linfonodo , Metástase Linfática , Masculino , Melanoma/secundário , Pessoa de Meia-Idade , Palpação , Valor Preditivo dos Testes , Prognóstico , Sensibilidade e Especificidade , Neoplasias Cutâneas/patologia , Taxa de Sobrevida , UltrassonografiaRESUMO
Almost all the patients with sarcoidosis have an abnormal chest radiograph, while nodular lesions of both the liver and the spleen is an unusual manifestation of abdominal sarcoidosis. We report a case of a patient with numerous hypodense nodular hepato-splenic lesions on abdominal CT and a normal chest X-ray. Biopsy of an hepatic lesion revealed sarcoidosis.
Assuntos
Hepatopatias/diagnóstico por imagem , Pulmão/diagnóstico por imagem , Sarcoidose/diagnóstico por imagem , Esplenopatias/diagnóstico por imagem , Idoso , Feminino , Humanos , Pulmão/anatomia & histologia , Radiografia Torácica , Tomografia Computadorizada por Raios XRESUMO
A 72-year-old patient with liver cirrhosis and cavernomatous portal vein occlusion presented with refractory ascites. We treated the patient with transjugular intrahepatic portosystemic shunt: transjugular transhepatic puncture of an intrahepatic hilar collateral vein was performed; transjugular intrahepatic portosystemic shunt was created between the right hepatic vein and the patent superior mesenteric vein using this hilar collateral vein as the connecting pathway. The ascites was resolved and the patient remains asymptomatic, while shunt patency is maintained 16 months after the intervention.