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1.
Tomography ; 10(5): 806-815, 2024 May 20.
Artigo em Inglês | MEDLINE | ID: mdl-38787021

RESUMO

OBJECTIVE: To determine the added value of digital breast tomosynthesis (DBT) in the assessment of lesions detected by contrast-enhanced mammography (CEM). MATERIAL AND METHODS: A retrospective study was conducted in a tertiary university medical center. All CEM studies including DBT performed between January 2016 and December 2020 were included. Lesions were categorized and scored by four dedicated breast radiologists according to the recent CEM and DBT supplements to the Breast Imaging Reporting and Data System (BIRADS) lexicon. Changes in the BIRADS score of CEM-detected lesions with the addition of DBT were evaluated according to the pathology results and 1-year follow-up imaging study. RESULTS: BIRADS scores of CEM-detected lesions were upgraded toward the lesion's pathology with the addition of DBT (p > 0.0001), overall and for each reader. The difference in BIRADS scores before and after the addition of DBT was more significant for readers who were less experienced. The reason for changes in the BIRADS score was better lesion margin visibility. The main BIRADS descriptors applied in the malignant lesions were spiculations, calcifications, architectural distortion, and sharp or obscured margins. CONCLUSIONS: The addition of DBT to CEM provides valuable information on the enhancing lesion, leading to a more accurate BIRADS score.


Assuntos
Neoplasias da Mama , Meios de Contraste , Mamografia , Humanos , Mamografia/métodos , Feminino , Neoplasias da Mama/diagnóstico por imagem , Neoplasias da Mama/patologia , Estudos Retrospectivos , Pessoa de Meia-Idade , Idoso , Adulto , Mama/diagnóstico por imagem , Mama/patologia , Intensificação de Imagem Radiográfica/métodos
2.
Clin Breast Cancer ; 24(6): e503-e508, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38670861

RESUMO

INTRODUCTION: The recommendations for annual mammography for male carriers with gynecomastia are controversial. This study investigated the potential link between gynecomastia and breast cancer in male carriers. PATIENTS AND METHODS: The database of a tertiary medical center was retrospectively searched for all male patients who underwent at least 1 digital mammography study from 2016 to 2023. Known carriers of a pathogenic variant in a high-risk breast-cancer gene were identified. Patients were stratified by carrier status, diagnosis of breast cancer, and diagnosis of gynecomastia. Data on demographics, hormone profile, and pathology results were compared. RESULTS: The cohort included 446 men of whom 82 were known carriers. Gynecomastia was diagnosed by mammography in 251 patients: 239/364 noncarriers (66%) and 12/82 carriers (15%) (P < .0001). Breast cancer was found in 21/364 noncarriers (6%) and 6/82 carriers (7%) (P < .6), and in 10/251 patients with gynecomastia (4%) and 17/193 (9%) without gynecomastia (P < .05). Among patients without gynecomastia, the number of breast cancer cases was similar in carriers and noncarriers (P = .3). Among patients with gynecomastia, the rate of breast cancer was higher in carriers (P < .08). On logistic regression analysis, the effect of gynecomastia on carriers was significant (P = .02). The odds ratio for a breast cancer diagnosis was 5.8 in the presence of gynecomastia (95% CI, 1.1-31, P < .04) and 0.52 in the absence of gynecomastia (95% CI, 0.2-1.7, P < .3). CONCLUSION: Gynecomastia may be associated with an increased risk of breast cancer in carriers. Larger studies are needed to determine whether and when to screen male carriers.


Assuntos
Neoplasias da Mama Masculina , Detecção Precoce de Câncer , Ginecomastia , Mamografia , Mutação , Humanos , Ginecomastia/genética , Ginecomastia/diagnóstico por imagem , Masculino , Estudos Retrospectivos , Neoplasias da Mama Masculina/genética , Neoplasias da Mama Masculina/diagnóstico por imagem , Neoplasias da Mama Masculina/patologia , Pessoa de Meia-Idade , Adulto , Detecção Precoce de Câncer/métodos , Idoso , Heterozigoto , Predisposição Genética para Doença , Proteína BRCA1/genética , Proteína BRCA2/genética
3.
Acta Derm Venereol ; 103: adv11603, 2023 11 17.
Artigo em Inglês | MEDLINE | ID: mdl-37974484

RESUMO

Hidradenitis suppurativa (HS) is a chronic inflammatory skin disease affecting patients of reproductive age. Although HS shares risk factors with male infertility, only 1 epidemiological study has evaluated this association. To further evaluate this potential association, findings on semen and hormonal analysis, testicular ultrasound, and the International Index of Erectile Function (IIEF-15) were compared between 28 men attending a tertiary HS clinic during the period April 2019 to April 2021, and 44 healthy controls, spouses of infertile women undergoing semen evaluation before in vitro fertilization. Patients with HS were divided based on the absence or presence of gluteal and genital lesions. Patients with HS were younger than controls (median 27 vs 34 years, p < 0.0004) and had a higher proportion of smokers (86% vs 33%, p < 0.0001). Semen parameters in patients with gluteal-genital lesions, specifically those with severe scrotal involvement necessitating surgery, were lower than the WHO reference values and significantly lower than in patients without gluteal-genital lesions and controls. Erectile dysfunction was reported by 93% of patients with HS. These findings suggest that spermatogenesis and sexual function may be impaired in young men with HS. Therefore, multidisciplinary management of HS should include their evaluation to identify patients who might benefit from semen cryopreservation and sexual treatment.


Assuntos
Disfunção Erétil , Hidradenite Supurativa , Infertilidade Feminina , Feminino , Humanos , Masculino , Sêmen , Hidradenite Supurativa/epidemiologia , Hidradenite Supurativa/patologia , Projetos Piloto
4.
Isr Med Assoc J ; 25(9): 601-607, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37698310

RESUMO

BACKGROUND: Age-related changes in multiparametric magnetic resonance imaging (mpMRI) of the prostate have been reported in the general population but not in screening cohorts. OBJECTIVES: To evaluate age-related changes on prostatic mpMRI in a screening cohort of BRCA1/2 mutation carriers. METHODS: Asymptomatic BRCA1/2 mutation carriers underwent mpMRI as part of a screening program. All included patients were followed for 3 years with no evidence of prostate cancer. mpMRIs were retrospectively evaluated by two abdominal radiologists for peripheral zone (PZ) patterns on T2 (homogenous hyperintensity, wedge-shaped hypointensities, patchy hypointensities, or diffuse hypointensity), and transition zone (TZ) pattern on T2 (homogenous, heterogeneous, nodular). Apparent diffusion coefficient (ADC) values of PZ and TZ were measured. Statistical analysis was performed using a predefined age cutoff of 50 years old. RESULTS: Overall, 92 patients were included: 38 in the younger age group (40-49 years) and 54 in the older age group (50-69 years). PZ homogenous hyperintensity and wedge-shaped hypointensities were more common in the older patients, whereas diffuse hypointensity was more common in younger patients (P < 0.001 for both readers) with substantial inter-reader agreement between the readers (kappa=0.643). ADC values were lower in young patients in the PZ (P < 0.001) and TZ (P = 0.003). CONCLUSIONS: Age-related differences in mpMRI were validated in BRCA mutation carriers. As some features overlap with prostatic carcinoma, awareness is crucial, specifically to diffuse T2 hypointensities of the PZ and lower ADC values in the PZ and TZ, which are more common in younger patients.


Assuntos
Proteína BRCA1 , Neoplasias da Próstata , Masculino , Humanos , Idoso , Pessoa de Meia-Idade , Adulto , Proteína BRCA1/genética , Próstata/diagnóstico por imagem , Estudos Retrospectivos , Proteína BRCA2/genética , Neoplasias da Próstata/diagnóstico por imagem , Neoplasias da Próstata/genética , Espectroscopia de Ressonância Magnética , Mutação
5.
Breast Dis ; 41(1): 317-323, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35786645

RESUMO

OBJECTIVES: High background parenchymal enhancement (BPE) levels and asymmetric distribution could cause diagnostic uncertainty due to morphological similarity to breast cancer, especially invasive lobular carcinoma (ILC). We investigated BPE in ILC patients, its association with the tumor hormonal profile, and the effect of endocrine treatment (ET). METHODS: The analysis included all MRI examinations performed at our institution between 2010 and 2019 for ILC-diagnosed patients. Baseline study and the first follow-up study were reviewed. Digital medical records were reviewed to retrieve demographics/pathology results/treatment information. BPE and fibroglandular tissue were assessed qualitatively on the contralateral breast according to the criteria of the Breast Imaging Reporting and Data System (BI-RADS). RESULTS: The study included 129 patients. Most (91%) had pure ILC. All received ET; 12% also received chemotherapy; 90% had surgery first; 70% by breast conservation. On the baseline MRI, 70% had mild or moderate BPE; whereas, on the follow-up study, the majority (59%) had minimal BPE. Most BPE reductions were by 2 degrees. In the baseline study, additional biopsies were required in 59% of cases, and in 17%, a short-term follow-up was recommended. In the follow-up study, biopsies were recommended in 10%, and a short-term follow-up was requested in 16%. A correlation between progesterone receptor intensity index and baseline BPE level was observed (r = 0.3, p = 0.004). CONCLUSION: ILC patients usually exhibit high BPE. ET decreases BPE, and therefore may decrease false-positive interpretations. Additional research is needed to explore whether study can be performed on ET without compromising sensitivity. KEY POINTS: ∙ High background parenchymal enhancement levels reduces breast MRI sensitivity, yielding high false positive rates especially when reporting cases of invasive lobular carcinoma [ILC].∙Treatment of ILC with endocrine therapy reduces background parenchymal enhancement and thus could decrease these false-positive interpretations.


Assuntos
Neoplasias da Mama , Carcinoma Lobular , Neoplasias da Mama/diagnóstico por imagem , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/patologia , Carcinoma Lobular/diagnóstico por imagem , Carcinoma Lobular/tratamento farmacológico , Carcinoma Lobular/patologia , Feminino , Seguimentos , Humanos , Imageamento por Ressonância Magnética/métodos , Estudos Retrospectivos
6.
Isr Med Assoc J ; 23(9): 590-594, 2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34472237

RESUMO

BACKGROUND: Among dialysis patients, occlusive mesenteric vascular disease has rarely been reported. OBJECTIVES: To report on the experience of one center with regard to diagnosing and treating this complication. METHODS: The retrospective case-series involved six patients (3 females, 3 males; age 52-88 years; 5/6 were smokers) on chronic hemodialysis at a single center. All patients with symptoms suggestive of occlusive mesenteric disease and a subsequent angiographic intervention were included. Demographic, clinical, and laboratory data were collected from patient charts for the period before and after angioplasty and stenting of the mesenteric vessels. A Wilcoxon signed-rank test was used to compare the relevant data before and after the intervention. RESULTS: All participants had variable co-morbidities and postprandial abdominal pain, food aversion, and weight loss. CT angiography was limited due to heavy vascular calcifications. All underwent angioplasty with stenting of the superior mesenteric artery (4 patients) or the celiac artery (2 patients). All procedures were successful in resolving abdominal pain, malnutrition, and inflammation. Weight loss before was 15 ± 2 kg and weight gain after was 6 ± 2 kg. C-reactive protein decreased from 13.4 ± 5.2 mg/dl to 2.2 ± 0.4 mg/dl (P < 0.05). Serum albumin increased from 3.0 ± 0.2 g/dl to 3.9 ± 0.1 g/dl (P < 0.05). Two patients underwent a repeat procedure (4 years, 5 months, respectively). Follow-up ranged from 0.5-7 years. CONCLUSIONS: Occlusive mesenteric ischemia occurs among dialysis patients. The diagnosis requires a high degree of suspicion, and it is manageable by angiography and stenting of the most involved mesenteric artery.


Assuntos
Isquemia Mesentérica/cirurgia , Oclusão Vascular Mesentérica/cirurgia , Diálise Renal/efeitos adversos , Stents , Dor Abdominal/etiologia , Idoso , Idoso de 80 Anos ou mais , Angioplastia , Artéria Celíaca/fisiopatologia , Artéria Celíaca/cirurgia , Feminino , Seguimentos , Humanos , Masculino , Artérias Mesentéricas/fisiopatologia , Artérias Mesentéricas/cirurgia , Isquemia Mesentérica/diagnóstico , Isquemia Mesentérica/etiologia , Oclusão Vascular Mesentérica/diagnóstico , Oclusão Vascular Mesentérica/etiologia , Pessoa de Meia-Idade , Estudos Retrospectivos
7.
Sci Rep ; 11(1): 13437, 2021 06 28.
Artigo em Inglês | MEDLINE | ID: mdl-34183759

RESUMO

Whole organ perfusion decellularization has been proposed as a promising method to generate non-immunogenic organs from allogeneic and xenogeneic donors. However, the ability to recellularize organ scaffolds with multiple patient-specific cells in a spatially controlled manner remains challenging. Here, we propose that replacing donor endothelial cells alone, while keeping the rest of the organ viable and functional, is more technically feasible, and may offer a significant shortcut in the efforts to engineer transplantable organs. Vascular decellularization was achieved ex vivo, under controlled machine perfusion conditions, in various rat and porcine organs, including the kidneys, liver, lungs, heart, aorta, hind limbs, and pancreas. In addition, vascular decellularization of selected organs was performed in situ, within the donor body, achieving better control over the perfusion process. Human placenta-derived endothelial progenitor cells (EPCs) were used as immunologically-acceptable human cells to repopulate the luminal surface of de-endothelialized aorta (in vitro), kidneys, lungs and hind limbs (ex vivo). This study provides evidence that artificially generating vascular chimerism is feasible and could potentially pave the way for crossing the immunological barrier to xenotransplantation, as well as reducing the immunological burden of allogeneic grafts.


Assuntos
Células Endoteliais/citologia , Medicina Regenerativa/métodos , Engenharia Tecidual/métodos , Alicerces Teciduais , Quimeras de Transplante/anatomia & histologia , Transplante Heterólogo/métodos , Animais , Quimerismo , Feminino , Membro Posterior/irrigação sanguínea , Membro Posterior/transplante , Técnicas de Cultura de Órgãos , Ratos , Ratos Sprague-Dawley , Suínos , Coleta de Tecidos e Órgãos , Vísceras/irrigação sanguínea , Vísceras/transplante
8.
Eur Radiol ; 31(12): 9654-9663, 2021 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-34052882

RESUMO

OBJECTIVES: In the midst of the coronavirus disease 2019 (COVID-19) outbreak, chest X-ray (CXR) imaging is playing an important role in diagnosis and monitoring of patients with COVID-19. We propose a deep learning model for detection of COVID-19 from CXRs, as well as a tool for retrieving similar patients according to the model's results on their CXRs. For training and evaluating our model, we collected CXRs from inpatients hospitalized in four different hospitals. METHODS: In this retrospective study, 1384 frontal CXRs, of COVID-19 confirmed patients imaged between March and August 2020, and 1024 matching CXRs of non-COVID patients imaged before the pandemic, were collected and used to build a deep learning classifier for detecting patients positive for COVID-19. The classifier consists of an ensemble of pre-trained deep neural networks (DNNS), specifically, ReNet34, ReNet50¸ ReNet152, and vgg16, and is enhanced by data augmentation and lung segmentation. We further implemented a nearest-neighbors algorithm that uses DNN-based image embeddings to retrieve the images most similar to a given image. RESULTS: Our model achieved accuracy of 90.3%, (95% CI: 86.3-93.7%) specificity of 90% (95% CI: 84.3-94%), and sensitivity of 90.5% (95% CI: 85-94%) on a test dataset comprising 15% (350/2326) of the original images. The AUC of the ROC curve is 0.96 (95% CI: 0.93-0.97). CONCLUSION: We provide deep learning models, trained and evaluated on CXRs that can assist medical efforts and reduce medical staff workload in handling COVID-19. KEY POINTS: • A machine learning model was able to detect chest X-ray (CXR) images of patients tested positive for COVID-19 with accuracy and detection rate above 90%. • A tool was created for finding existing CXR images with imaging characteristics most similar to a given CXR, according to the model's image embeddings.


Assuntos
COVID-19 , Humanos , Redes Neurais de Computação , Estudos Retrospectivos , SARS-CoV-2 , Raios X
10.
Tumori ; 107(5): 432-439, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-33594961

RESUMO

INTRODUCTION: Submucosal fat deposition (SMF) in the gastrointestinal tract can be seen in patients treated with vascular endothelial growth factor receptor multitarget tyrosine kinase inhibitors (mtTKIs). We aimed to assess the association between mtTKIs treatment and appearance of SMF on computed tomography (CT). METHODS: We performed retrospective evaluation of patients who started mtTKI treatment between 2016 and 2018, with a comparison patient cohort treated with single-target tyrosine kinase inhibitors (stTKIs). SMF amount for each gastrointestinal tract segment (stomach, duodenum, jejunum, ileum, terminal ileum, right colon, left colon) was scored as follows: 0 = none; 1 = low amount (<2 mm thick); 2 = high amount (>2 mm layer). For each CT, segment scores were aggregated to create an SMF index (SMFI). Maximal increase in SMFI between pretreatment and posttreatment CTs was documented. SMF ⩾3 was defined as positive. RESULTS: Forty patients treated with mtTKIs and 23 patients receiving stTKIs were included. Maximal increase in SMFI during treatment was 0-1 in 56/63 patients (89%) and 3-6 in 7/63 patients (11%). All patients with positive SMFI received mtTKIs compared to 0 patients treated with stTKIs (17.5% vs. 0%; p = 0.04). mtTKI treatment was associated with higher incidence of nausea/vomiting (4/7) and diarrhea (4/7) when positive SMF was noted, as compared to patients with negative SMF (6/33 patients each; p = 0.048). CONCLUSION: Gastrointestinal tract SMF deposition occurs in a considerable proportion of patients treated with mtTKIs with association to abdominal symptoms. This may be unique to mtTKIs and was not found in patients receiving stTKIs.


Assuntos
Tecido Adiposo/efeitos dos fármacos , Trato Gastrointestinal/efeitos dos fármacos , Inibidores de Proteínas Quinases/efeitos adversos , Tomografia Computadorizada por Raios X/métodos , Tecido Adiposo/diagnóstico por imagem , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Trato Gastrointestinal/diagnóstico por imagem , Humanos , Masculino , Pessoa de Meia-Idade , Terapia de Alvo Molecular/efeitos adversos , Estudos Retrospectivos
11.
Clin Imaging ; 71: 24-28, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33171362

RESUMO

Neoadjuvant therapy (NAT) is increasingly used in breast cancer (BC), yet, the recommended time interval between NAT completion, preoperative imaging assessment, and breast surgery is not clearly defined. This single-center retrospective study investigated tumor growth between NAT completion and surgery. The analysis included 106 BC patients who received NAT (69% chemotherapy alone, 31% chemotherapy plus anti-HER2 therapy), had post-NAT breast MRI, and definitive surgery between 2012 and 2019. The median time interval between end-of-treatment and surgery was 6 weeks; 90% had surgery within 8 weeks of NAT completion, and 10% had surgery 8-12 weeks after NAT completion. No significant correlation was found between any of the time intervals (i.e., NAT completion-to-surgery, NAT completion-to-MRI, post-NAT MRI to surgery) and the tumor size as captured in the pathology report. The only parameter that was significantly correlated with pathological tumor size was tumor size as measured on the post NAT MRI (P < .0001). The difference in tumor size between post NAT MRI and surgical pathology did not correlate with the time interval between end-of-treatment and surgery. The ratio between residual tumor size on post-NAT MRI and the time interval from the end-of-treatment to surgery, significantly correlated with the tumor size on surgical pathology (P < .0001) suggesting that NAT has a beneficial effect weeks after end-of-treatment. In conclusion, our results suggest that for patients undergoing neoadjuvant chemotherapy, surgery within 4-8 weeks of completing NAT is reasonable, and is unlikely to result in a clinically significant change in residual tumor size.


Assuntos
Neoplasias da Mama , Terapia Neoadjuvante , Protocolos de Quimioterapia Combinada Antineoplásica , Mama , Neoplasias da Mama/diagnóstico por imagem , Neoplasias da Mama/cirurgia , Humanos , Imageamento por Ressonância Magnética , Neoplasia Residual , Estudos Retrospectivos
12.
Artif Organs ; 44(10): 1073-1080, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-32299137

RESUMO

Perfusion decellularization has been proposed as a promising method for generating nonimmunogenic organs from allogeneic or xenogeneic donors. Several imaging modalities have been used to assess vascular integrity in bioengineered organs with no consistency in the methodology used. Here, we studied the use of fluoroscopic angiography performed under controlled flow conditions for vascular integrity assessment in bioengineered kidneys. Porcine kidneys underwent ex vivo angiography before and after perfusion decellularization. Arterial and venous patencies were defined as visualization of contrast medium (CM) in distal capillaries and renal vein, respectively. Changes in vascular permeability were visualized and quantified. No differences in patency were detected in decellularized kidneys compared with native kidneys. However, focal parenchymal opacities and significant delay in CM clearance were detected in decellularized kidneys, indicating increased permeability. Biopsy-induced leakage was visualized in both groups, with digital subtraction angiography revealing minimal CM leakage earlier than nonsubtracted fluoroscopy. In summary, quantitative assessment of vascular permeability should be coupled with patency when studying the effect of perfusion decellularization on kidney vasculature. Flow-controlled angiography should be considered as the method of choice for vascular assessment in bioengineered kidneys. Adopting this methodology for organs premodified ex vivo under normothermic machine perfusion settings is also suggested.


Assuntos
Angiografia Digital/métodos , Transplante de Rim/métodos , Rim/irrigação sanguínea , Engenharia Tecidual/métodos , Coleta de Tecidos e Órgãos/métodos , Animais , Permeabilidade Capilar , Estudos de Viabilidade , Feminino , Fluoroscopia/métodos , Rejeição de Enxerto/imunologia , Rejeição de Enxerto/prevenção & controle , Humanos , Rim/citologia , Rim/imunologia , Transplante de Rim/efeitos adversos , Reprodutibilidade dos Testes , Sus scrofa , Transplante Heterólogo/métodos , Transplante Homólogo/métodos
13.
J Vasc Interv Radiol ; 31(4): 644-648, 2020 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32146036

RESUMO

PURPOSE: To demonstrate the feasibility of cystic duct embolization and chemical gallbladder ablation as an alternative to cholecystectomy in high-risk patients with calculous cholecystitis who were not candidates for surgery. MATERIALS AND METHODS: This prospective study included 10 patients with acute cholecystitis (7 males and 3 females) aged 70-91 years (average age, 81.6 years) between 2013 and 2019. A cholecystostomy catheter was inserted during the acute phase, followed by cystic duct coil embolization performed via the existing drainage tube tract. Once asymptomatic, 3% aethoxysklerol was injected into the gallbladder, and the drain was removed upon sonographic confirmation that the gallbladder remained contracted. Each phase of the procedure was performed with an interval of 2-3 weeks. Clinical, cholangiographic, and sonographic data were collected before and after drain removal at 1-month follow-up. RESULTS: Cystic duct embolization was technically successful in all patients, with no immediate post-procedure complications. Gallbladder ablation performed in 10 patients was technically successful in all of them (median follow-up, 11 months). One patient required repeat ablation at 14 months, and the prolonged biliary excretions of 1 other patient ceased only at 8 months. CONCLUSIONS: Cystic duct embolization with gallbladder ablation is a feasible procedure for patients in whom cholecystectomy is contraindicated.


Assuntos
Técnicas de Ablação , Colecistite Aguda/terapia , Ducto Cístico , Embolização Terapêutica , Cálculos Biliares/terapia , Polidocanol/administração & dosagem , Técnicas de Ablação/efeitos adversos , Idoso , Idoso de 80 Anos ou mais , Colecistectomia/efeitos adversos , Colecistite Aguda/diagnóstico por imagem , Contraindicações de Procedimentos , Ducto Cístico/diagnóstico por imagem , Embolização Terapêutica/efeitos adversos , Estudos de Viabilidade , Feminino , Cálculos Biliares/diagnóstico por imagem , Humanos , Masculino , Polidocanol/efeitos adversos , Estudos Prospectivos , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento
14.
J Comput Assist Tomogr ; 43(6): 912-918, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31738208

RESUMO

OBJECTIVE: The objective of this study was to identify radiological and clinical factors associated with early mortality in malignant superior vena cava syndrome (SVCS). MATERIALS AND METHODS: Chest computed tomography studies of 127 patients with malignancy-associated SVCS were retrospectively reviewed. Involvement of SVC and tributaries, pleural and pericardial effusions, pulmonary artery involvement, and ancillary findings were documented. Univariate and multivariate models determined associations between radiological and clinical variables, and 30-day mortality. RESULTS: Thirty-day mortality rate was 16.5% (n = 21). Factors associated with 30-day mortality on univariate analysis included age, cancer stage, SVCS clinical severity, left jugular vein obstruction, number of involved veins, pulmonary arteries involvement, and presence of pleural effusions. Age, SVCS clinical severity, number of veins involved, and pleural effusions were positively associated with 30-day mortality on multivariate analysis. CONCLUSIONS: Selected clinical and radiological variables are associated with early death in malignant SVCS. These factors may identify a subgroup of patients who may benefit from treatment escalation.


Assuntos
Síndrome da Veia Cava Superior/diagnóstico por imagem , Síndrome da Veia Cava Superior/mortalidade , Neoplasias Torácicas/diagnóstico por imagem , Neoplasias Torácicas/mortalidade , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Medição de Risco , Tomografia Computadorizada por Raios X , Adulto Jovem
15.
J Med Imaging Radiat Oncol ; 63(1): 47-53, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30443994

RESUMO

INTRODUCTION: Breast and chest wall desmoid tumours can cause debilitating symptoms and deformity. The mutilating effects of surgical treatment have prompted a shift to medical treatments and even to a wait-and-see approach. This study sought to highlight specific characteristics of breast and chest wall desmoid tumours on long-term follow-up by sequential MRI scans. METHODS: Thirty-two breast MRI scans from six patients with chest wall or breast desmoid tumours followed up for up to 6 years were retrospectively reviewed. RESULTS: All patients underwent breast surgery prior to the development of the desmoid tumour. Five of the patients had reconstruction or augmentation using silicone implants. Two desmoids were treated primarily with surgery, three with medical means and one is under wait-and-see approach. On MRI, tumours appeared either oval and lobulated (chest wall) or spiculated with architectural distortion (breast). Chest wall desmoids demonstrated both an enhancing high-T2-signal component and a non-enhancing low-T2- signal component. The histologically defined phases during the course of desmoid tumours (progression, regression, residual disease) could be demonstrated by corresponding MRI changes in each of the components. CONCLUSIONS: Magnetic resonance imaging delineates the complex infiltrative features of chest wall and breast desmoid tumours. In tumours with a bright cellular enhancing and dark collagenous non-enhancing component, treatment response may be predicted by changes on serial T2-weighted sequences, beyond the tumour-dimension-based RECIST assessment alone.


Assuntos
Implantes de Mama , Neoplasias da Mama/diagnóstico por imagem , Fibromatose Agressiva/diagnóstico por imagem , Imageamento por Ressonância Magnética/métodos , Neoplasias Torácicas/diagnóstico por imagem , Neoplasias Torácicas/terapia , Parede Torácica/diagnóstico por imagem , Adulto , Neoplasias da Mama/patologia , Feminino , Fibromatose Agressiva/patologia , Fibromatose Agressiva/terapia , Seguimentos , Humanos , Interpretação de Imagem Assistida por Computador , Mamoplastia , Estudos Retrospectivos , Silicones , Neoplasias Torácicas/patologia , Parede Torácica/patologia , Resultado do Tratamento
16.
J Vasc Interv Radiol ; 29(10): 1376-1382, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-30075974

RESUMO

Systemic doxorubicin is effective for desmoid fibromatosis (DF), but its use is limited by dose-dependent cardiotoxicity. A protocol of selective intra-arterial doxorubicin drug-eluting embolization (DEE) was designed to maximize target tissue efficacy of doxorubicin, while minimizing systemic exposure. Four children with recurrent or refractory DF were treated between 2014 and 2017. Tumor volumes were reduced by 54%-97% over a follow-up interval of 6-32 months. A single patient experienced transient lower extremity paresthesia (Common Terminology Criteria for Adverse Events grade I). Further investigation is needed to better establish these promising results for doxorubicin DEE in DF treatment.


Assuntos
Antibióticos Antineoplásicos/administração & dosagem , Quimioembolização Terapêutica/métodos , Doxorrubicina/administração & dosagem , Fibromatose Agressiva/tratamento farmacológico , Adolescente , Fatores Etários , Angiografia , Antibióticos Antineoplásicos/efeitos adversos , Quimioembolização Terapêutica/efeitos adversos , Pré-Escolar , Tomografia Computadorizada de Feixe Cônico , Doxorrubicina/efeitos adversos , Estudos de Viabilidade , Feminino , Fibromatose Agressiva/diagnóstico por imagem , Fibromatose Agressiva/patologia , Humanos , Imageamento por Ressonância Magnética , Masculino , Fatores de Tempo , Resultado do Tratamento , Carga Tumoral/efeitos dos fármacos
17.
Neuroradiology ; 60(9): 913-919, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-30030548

RESUMO

PURPOSE: The aim of this retrospective study is to investigate the value of the susceptibility-weighted imaging (SWI) sequence compared to gradient echo (GRE) in the detection and follow-up of cavernous malformations in patients who underwent whole-brain irradiation as part of their medulloblastoma treatment. METHODS: We retrospectively examined MRI studies of 28 subjects (16 males, 12 females) who received whole-brain irradiation as part of their treatment. Ages at irradiation ranged from 2 to 38 years. All patients were periodically followed up with MR imaging (ranging from 9 to 336 months). Two neuroradiologists reviewed studies of the same patients, comparing the number of suspected cavernomas detected on GRE and SWI sequences performed at different times (median time between studies, 10 months). RESULTS: Hypointense lesions were detected in 24 subjects on SWI sequences and in 19 subjects on GRE sequences. More lesions were seen on SWI than on GRE (p = 0.006). Four patients had no detectable lesions. The minimal period from irradiation to first lesion detection was 14 months. Cavernomas larger than 3 mm were detected in 14 subjects by both GRE and SWI. None of the subjects had symptoms related to cavernomas. CONCLUSIONS: The sensitivity of SWI in the detection of hypointense lesions in patients after whole-brain irradiation is significantly higher than that of the GRE sequence. It appears that almost all subjects eventually develop small hypointense lesions after radiotherapy, and some of them progress to cavernous malformations. The clinical significance of the increased sensitivity of SWI in this group of patients is not entirely certain.


Assuntos
Hemangioma Cavernoso do Sistema Nervoso Central/diagnóstico por imagem , Hemangioma Cavernoso do Sistema Nervoso Central/etiologia , Meduloblastoma/diagnóstico por imagem , Meduloblastoma/radioterapia , Tumores Neuroectodérmicos Primitivos/diagnóstico por imagem , Tumores Neuroectodérmicos Primitivos/radioterapia , Adolescente , Adulto , Criança , Pré-Escolar , Feminino , Humanos , Imageamento por Ressonância Magnética/métodos , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Sensibilidade e Especificidade
18.
Clin Imaging ; 51: 347-351, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29982132

RESUMO

OBJECTIVE: High background parenchymal enhancement and amount of fibroglandular tissue on breast magnetic resonance imaging are related to increased breast cancer risk. This study sought to compare these parameters between BRCA mutation carriers and non-carriers and to evaluate the potential implications of the findings for short term follow-up. MATERIALS AND METHODS: Magnetic resonance imaging studies of known BRCA mutation carriers, were compared to age-matched non-carrier studies performed in the same center during the same period. The groups were compared for qualitative background parenchymal enhancement and amount of fibroglandular tissue using the Breast Imaging Reporting and Data System (BI-RADS). RESULTS: Breast parenchymal enhancement was high in up to one-third of the cohort: 22% of carriers and 33% of controls (p = 0.013). These results were sustained on separate analysis of menstrual-cycle-timed examinations. Amount of fibroglandular tissue was high in most cases: 62% of carriers and 75% of controls (p = 0.004). A BI-RADS final assessment score of 3 was more common in patients with high parenchymal enhancement, especially controls. CONCLUSION: BRCA mutation carriers demonstrated lower levels of breast parenchymal enhancement and amount of fibroglandular tissue than age-matched non-carriers. These differences are probably influenced by hormonal status, as well as highlight different risks in distinctive subgroups of breast cancer (hormone-enriched, mutation-associated defective DNA damage repair), affecting considerations of preventive medical treatment. Differences in the indications for imaging between the carrier and non-carrier groups (screening for mutations and breast cancer evaluation, respectively) probably accounted for the higher rate of BI-RADS 3 in the control group.


Assuntos
Neoplasias da Mama/diagnóstico por imagem , Mama/diagnóstico por imagem , Genes BRCA1 , Heterozigoto , Imageamento por Ressonância Magnética/métodos , Mutação , Tecido Parenquimatoso/diagnóstico por imagem , Adulto , Mama/patologia , Neoplasias da Mama/genética , Neoplasias da Mama/patologia , Estudos Transversais , Feminino , Humanos , Pessoa de Meia-Idade , Tecido Parenquimatoso/patologia , Estudos Retrospectivos
19.
J Pediatr Surg ; 52(10): 1637-1641, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28209418

RESUMO

BACKGROUND/PURPOSE: We present our long experience with desmoid tumors in children. METHODS: Data were retrospectively collected from 17 children/adolescents treated for sporadic desmoid tumors at a tertiary pediatric hospital in 1988-2016. There were 10 girls and 7 boys aged 1-17years. Tumor sites included head and neck, trunk, extremity, and groin. Eight patients underwent radical resection, with complete remission in 7 and local relapse in one which was treated with chemotherapy. Four patients underwent incomplete surgical resection, three with adjuvant chemotherapy. Five patients underwent biopsy only and chemotherapy. Two of the 9 chemotherapy-treated patients also had intraarterial chemoembolization. Chemotherapy usually consisted of vincristine and actinomycin-D with or without cyclophosphamide or low-dose vinblastine and methotrexate. Two patients also received tamoxifen. RESULTS: After a median follow-up of 3.3years, 10 patients were alive in complete remission, 5 had stable disease, and 2 had reduced tumor size. Five-year overall survival was 100%, and event-free survival, 87.5%. Ten were screened for CTNNB1 mutations. CTNNB1 gene sequencing yielded mutations in 5/10 samples tested: 3 T41A, 2 S45F. There was no association of CTNNB1 mutation with clinical outcome or prognosis. CONCLUSION: Pediatric desmoid tumors are rare, with variable biologic behavior and morbidity. Treatment requires a multidisciplinary approach. LEVEL OF EVIDENCE: LEVEL IV, treatment study.


Assuntos
Fibromatose Agressiva/tratamento farmacológico , Fibromatose Agressiva/cirurgia , Adolescente , Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Intervalo Livre de Doença , Feminino , Humanos , Masculino , Estudos Retrospectivos , Falha de Tratamento
20.
Isr Med Assoc J ; 18(2): 104-7, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26979003

RESUMO

BACKGROUND: Various vena cava filters (VCF) are designed with the ability to be retrieved percutaneously. Yet, despite this option most of them remain in the inferior vena cava (IVC). OBJECTIVES: To report our experience in the placement and retrieval of three different types of VCFs, and to compare the indications for their insertion and retrieval as reported in the literature. METHODS: During a 5 year period three types of retrievable VCF (ALN, OptEase, and Celect) were inserted in 306 patients at the Rabin Medical Center (Beilinson and Hasharon hospitals). Indications, retrieval rates, median time to retrieval, success and complication rates were viewed and assessed in the three groups of filter types and were compared with the data of similar studies in the literature. RESULTS: Of the 306 VCFs inserted, 31 (10.1%) were retrieved with equal distribution in the three groups. In most patients the reason for filter insertion was venous thromboembolic events (VTE) and contraindications to anticoagulant therapy. Mean age was 68.38 ± 17.5 years (range 18-99) and was noted to be significantly higher compared to similar studies (53-56 years) (P < 0.0001). Multi-trauma patients were significantly older (71.11 ± 14.99 years) than post-pulmonary embolism patients (48.03 ± 20.98 years, P < 0.0001) and patients with preventive indication (26.00 ± 11.31, P < 0.0001). The mean indwelling time was 100.6 ± 103.399 days. Our results are comparable with the results of other studies, and there was no difference in percentage of retrieval or complications between patients in each of the three groups. CONCLUSIONS: In 1 of 10 patients filters should be removed after an average of 3.5 months. All three IVC filter types used are safe to insert and retrieve.


Assuntos
Filtros de Veia Cava , Veia Cava Inferior/cirurgia , Tromboembolia Venosa/prevenção & controle , Adolescente , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Remoção de Dispositivo , Seguimentos , Humanos , Pessoa de Meia-Idade , Embolia Pulmonar/prevenção & controle , Estudos Retrospectivos , Fatores de Tempo , Filtros de Veia Cava/efeitos adversos , Adulto Jovem
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