Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 27
Filtrar
1.
J Clin Ultrasound ; 2024 Mar 06.
Artigo em Inglês | MEDLINE | ID: mdl-38446065

RESUMO

PURPOSE: Superb microvascular imaging (SMI) and Shear wave elastography (SWE) are newly developed ultrasonographic diagnostic tools used to support the diagnosis of De Quervain tenosynovitis (DQT). The aim of this study was to examine the capacity to differentiate between the wrist with DQT and the healthy wrist, as well as the potential for predicting the disease's severity using B-mode ultrasonography, SWE, and SMI. METHODS: A total of 19 cases with unilateral clinical DQT were included in the prospective study. The wrists of these cases without DQT clinic constituted the control group. RESULTS: The SWE parameters of m/s and kPa cutoff values were ≤5.225 and ≤ 77.65, respectively, in the wrists with DQT compared to the wrists not diagnosed with DQT (p < 0.001). Regarding SMI findings no microvascularity was determined in the abductor pollicis longus (APL) and extensor pollicis brevis (EPB) tendon sheaths of the wrists without DQT, and a significant increase was observed in the degree of microvascularity as the clinical severity of DQT increased. CONCLUSION: SWE results can differentiate between the presence and absence of DQT. SMI grading of the APL and EPB tendon sheaths may be helpful to the clinician in deciding the clinical severity of DQT.

2.
Diagn Interv Radiol ; 29(3): 414-427, 2023 05 31.
Artigo em Inglês | MEDLINE | ID: mdl-36960669

RESUMO

PURPOSE: To evaluate the frequency of abdominal computed tomography (CT) findings in patients with coronavirus disease-2019 (COVID-19) and interrogate the relationship between abdominal CT findings and patient demographic features, clinical findings, and laboratory test results as well as the CT atherosclerosis score in the abdominal aorta. METHODS: This study was designed as a multicenter retrospective study. The abdominal CT findings of 1.181 patients with positive abdominal symptoms from 26 tertiary medical centers with a positive polymerase chain-reaction test for severe acute respiratory syndrome coronavirus 2 were reviewed. The frequency of ischemic and non-ischemic CT findings as well as the association between CT findings, clinical features, and abdominal aortic calcific atherosclerosis score (AA-CAS) were recorded. RESULTS: Ischemic and non-ischemic abdominal CT findings were detected in 240 (20.3%) and 328 (27.7%) patients, respectively. In 147 patients (12.4%), intra-abdominal malignancy was present. The most frequent ischemic abdominal CT findings were bowel wall thickening (n = 120; 10.2%) and perivascular infiltration (n = 40; 3.4%). As for non-ischemic findings, colitis (n = 91; 7.7%) and small bowel inflammation (n = 73; 6.2%) constituted the most frequent disease processes. The duration of hospital stay was found to be higher in patients with abdominal CT findings than in patients without any positive findings (13.8 ± 13 vs. 10.4 ± 12.8 days, P < 0.001). The frequency of abdominal CT findings was significantly higher in patients who did not survive the infection than in patients who were discharged after recovery (41.7% vs. 27.4%, P < 0.001). Increased AA-CAS was found to be associated with a higher risk of ischemic conditions in abdominal CT examinations. CONCLUSION: Abdominal symptoms in patients with COVID-19 are usually associated with positive CT findings. The presence of ischemic findings on CT correlates with poor COVID-19 outcomes. A high AA-CAS is associated with abdominal ischemic findings in patients with COVID-19.


Assuntos
COVID-19 , Humanos , COVID-19/diagnóstico por imagem , Estudos Retrospectivos , SARS-CoV-2 , Abdome , Tomografia Computadorizada por Raios X/métodos
3.
Clin Lab ; 68(12)2022 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-36546739

RESUMO

BACKGROUND: This study aimed to investigate the usefulness of platelet indices in predicting prognosis in coronavirus disease-19 (COVID-19). METHODS: Patients aged ≥ 65 years who presented to the emergency department with a positive polymerase chain reaction test were retrospectively analyzed. RESULTS: Significant differences were found in the mean values of platelet (PLT) and plateletcrit (PCT) parameters in those with severe disease, those who died, and those who required intensive care unit (ICU) admission. Mean PLT and PCT values were higher in patients with severe COVID-19 (p-values < 0.001, for both), those requiring ICU admission (p = 0.016; p = 0.006; respectively), and those who died (p = 0.015; p = 0.005, respectively). PLT and PCT were found to be statistically significant in predicting death [PLT (area under the curve (AUC): 0.598; p = 0.0145) and PCT (AUC: 0.617; p = 0.0034)], severity [PLT (AUC: 0.653; p = 0.0002) and PCT (AUC: 0.654; p = 0.0002)], and ICU admission [PLT (AUC: 0.598; p = 0.0235) and PCT (AUC: 0.605; p = 0.0148)]. CONCLUSIONS: PLT and PCT values were significantly higher in patients with high disease severity, those requiring ICU admission, and those who died. Furthermore, they were statistically significant in predicting disease severity, ICU admission, and death.


Assuntos
COVID-19 , Sepse , Idoso , Humanos , Estudos Retrospectivos , Plaquetas , Gravidade do Paciente , Prognóstico , Curva ROC
4.
World J Nucl Med ; 21(2): 106-111, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35865153

RESUMO

Background Imaging plays an important role in the evaluation of prostate cancer patients. In recent years, much attention has been focused on gallium 68 prostate-specific membrane antigen positron emission tomography-computed tomography ( 68 Ga PSMA PET-CT) in prostate cancer patients and has been widely used for staging, restaging, and therapy response for these patients. The aim of this study was to report 68 Ga PSMA PET-CT in other cancers and benign processes incidentally detected on 68 Ga PSMA PET-CT in patients with prostate cancer. Materials and Methods A total of 600 68 Ga PSMA PET-CT scans were performed for initial staging, restaging, detection of suspected recurrence, and therapy response in prostate cancer patients between December 2018 and June 2020. A total of 38 patients with histopathologically proven prostate cancer were included in the current study with other malignancies and benign processes. Mainly histopathology in most of cases and clinical and radiological follow-up in few cases after PET/CT scanning served as the standard of reference. Results A total of 38 patients (age range: 52-85 years; mean age: 68.6) with prostate cancer final histopathology results were included in the study. A total of 51 lesion sites were evaluated in 38 patients. Forty-one lesion regions of these 51 regions were based on histopathological diagnosis, whereas 10 of them were based on clinical follow-up and conventional radiological follow-up as differential criteria. Thirty of 51 lesion regions were evaluated as malignant and 21 were benign lesions. The most common 68 Ga PSMA ligand avid malignancy was lung adenocarcinoma (6/38). Conclusions Prostate-specific membrane antigen (PSMA) is a cell surface glycoprotein and mainly expressed in prostate epithelium. 68 Ga PSMA PET-CT imaging is very sensitive and specific imaging modality in prostate cancer patients. However, other malignancies and some benign processes may also have 68 Ga PSMA ligand avidity and some prostate cancer metastases may imitate other malignancies.

5.
J Pediatr Hematol Oncol ; 44(2): e500-e502, 2022 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-35200223

RESUMO

Pulmonary fibrosis caused by bleomycin-induced pneumonia (BIP) is the most important side effect limiting the use of bleomycin and is mainly treated with corticosteroids. However, 1% to 4% of patients do not respond to corticosteroid therapy. Idiopathic pulmonary fibrosis and BIP develop by similar pathophysiological mechanisms. Nintedanib is a tyrosine kinase inhibitor used successfully in the treatment of idiopathic pulmonary fibrosis and there is no information about its use in BIP treatment. Here, we would like to present a 13-year-old boy with Hodgkin lymphoma who developed BIP after 2 cycles of ABVD (Adriamycin, bleomycin, vinblastine, and dacarbazine) and 4 cycles of BAECOPP (bleomycin, etoposide, doxorubicin, cyclophosphamide, vincristine, procarbazine, and prednisone), whose respiratory failure impaired despite corticosteroid therapy, but was successfully treated with nintedanib.


Assuntos
Doença de Hodgkin , Fibrose Pulmonar Idiopática , Pneumonia , Adolescente , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Bleomicina , Criança , Dacarbazina , Doxorrubicina , Etoposídeo , Doença de Hodgkin/tratamento farmacológico , Doença de Hodgkin/patologia , Humanos , Fibrose Pulmonar Idiopática/tratamento farmacológico , Indóis , Masculino , Pneumonia/induzido quimicamente , Pneumonia/tratamento farmacológico , Prednisona/uso terapêutico , Vimblastina , Vincristina
6.
J Cosmet Dermatol ; 21(7): 2962-2970, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34587657

RESUMO

PURPOSE: Androgenetic alopecia (AGA) is the most common cause of hair loss in males. Physical examination and history are the most important examinations in diagnosis of the disease. As yet, there is no diagnostic method to be able to determine which individuals will develop AGA. Shear-wave elastography (SWE) is a novel diagnostic tool, which can evaluate tissue stiffness. Superb microvascular imaging (SMI) can determine low flow in microvessels. The aim of the current study was to determine whether or not AGA would develop in individuals with normal hair and a family history of AGA using B-mode US, SMI, and SWE. METHODS: The study included 26 patients clinically diagnosed with AGA and a control group of 26 volunteers. RESULTS: Thickness with the distance from the epidermis to the calvarium (ECD) on the hairline and cranial subcutaneous tissue thickness (CSTD) were determined to be statistically significantly thinner in the AGA group than in the control group (p < 0.0001). For the differentiation of the AGA patients, the cutoff value was determined to be 5.5 mm for ECD and 4.05 mm for CSTD. The cranial epidermis-dermis (CED) stiffness values both as meter/second (m/s) and kilopascals (kPa) were statistically significantly lower in the AGA patients than in the control group (p < 0.0001). The cutoff values were 6.075 as m/s and 104.4 as kPa. CONCLUSIONS: The results of this study demonstrated that differentiation could be made of individuals before the development of AGA from normal healthy individuals with CSTD measurement on B-mode US and CED stiffness measurement on SWE.


Assuntos
Técnicas de Imagem por Elasticidade , Alopecia/diagnóstico por imagem , Técnicas de Imagem por Elasticidade/métodos , Humanos , Masculino , Ultrassonografia , Ultrassonografia Doppler/métodos
7.
Skeletal Radiol ; 51(3): 625-635, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-34291326

RESUMO

OBJECTIVE: This study intended to analyze alterations in ischiofemoral space (IFS) dimensions in normal children between the ages of 1 and 18 years for the ischiofemoral impingement. MATERIALS AND METHODS: This study retrospectively focused on computed tomography images of 360 hips of 180 (90 boys and 90 girls) pediatric subjects (mean age: 9.50 ± 5.20 years, range: 1-18 years) without any hip disorders to measure IFS, femoral neck angle (FNA), and ischial angle (IA). RESULTS: Mean IFS, FNA, and IA were measured as 14.64 ± 7.24 mm, 34.61 ± 11.47°, and 131.52 ± 4.22°, respectively. IFS increased in children aged between 1 and 18 years, whereas FNA and IA decreased. IFS was similar in infancy and early childhood periods but then increased up to postpubescent period. FNA decreased proportionally from birth, whereas IA decreased in an irregular pattern. Linear functions were detected as y = 3.451 + 1.178 × years for IFS, as y = 48.555 - 1.468 × years for FNA, and as y = 132.535 - 0.107 × years for IA. CONCLUSION: Our findings indicate that IFS tends to increase in size with age during childhood but decreases with further aging. Therefore, age-specific values for IFS, FNA, and IA may be beneficial for clinicians and radiologists for the diagnosis of ischiofemoral impingement.


Assuntos
Impacto Femoroacetabular , Articulação do Quadril , Adolescente , Criança , Pré-Escolar , Feminino , Impacto Femoroacetabular/diagnóstico por imagem , Quadril , Articulação do Quadril/diagnóstico por imagem , Humanos , Lactente , Ísquio/diagnóstico por imagem , Imageamento por Ressonância Magnética , Masculino , Estudos Retrospectivos
8.
Singapore Med J ; 63(9): 520-526, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-34005845

RESUMO

Introduction: Neurofibromatosis type 1 (NF1) is an autosomal dominant neurocutaneous disease characterised by multisystemic involvement, including bone tissue. Deformities and reduced bone mass are the main bone manifestations in NF1. Quantitative computed tomography (QCT) provides true volumetric bone mineral density (BMD) measurement. This study aimed to evaluate bone metabolism parameters and BMD in children with NF1 using QCT. Methods: The data of 52 paediatric NF1 patients (23 female, 29 male) was evaluated retrospectively. We investigated anthropometric measurements, biochemical parameters like total calcium, phosphate, magnesium, alkaline phosphatase, 25-hydroxyvitamin D (25OHD), parathyroid hormone, calcitonin, urinary calcium/creatinine ratio, and QCT parameters like lumbar trabecular and cortical BMD, trabecular area and cortical thickness. Comparisons of gender and puberty status were performed. Results: 25% of patients had skeletal deformities and 42.3% had 25OHD inadequacy (<20 ng/mL). The frequency of 25OHD inadequacy was significantly higher in pubertal/postpubertal patients than prepubertal patients (61.9% vs. 29.0%, P = 0.019). Trabecular BMD Z-score was <-2.0 in 11.5% of patients; all with low BMD were at the pubertal/postpubertal stage. There was a significant negative correlation between age and trabecular Z-score (r = -0.41, P = 0.003). Mean cortical BMD was statistically similar between the genders and puberty groups. Puberty status, anthropometric Z-scores, and biochemical and QCT parameters were statistically similar between the genders (P > 0.05). Conclusion: Paediatric NF1 patients may present with low BMD and 25OHD inadequacy, especially at puberty. QCT may be a useful tool to evaluate trabecular and cortical bone separately in NF1 patients.


Assuntos
Neurofibromatose 1 , Feminino , Humanos , Masculino , Criança , Absorciometria de Fóton/métodos , Neurofibromatose 1/complicações , Neurofibromatose 1/diagnóstico por imagem , Cálcio , Estudos Retrospectivos , Densidade Óssea , Tomografia Computadorizada por Raios X/métodos
9.
Surg Radiol Anat ; 44(3): 353-359, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-34825933

RESUMO

PURPOSE: The formation of pterygoalar (Pa) and pterygospinous (Ps) bars are controversial whether they are secondary ossifications with aging or phylogenetic remnant. Therefore we aimed to evaluate the presence of Pa and Ps bars in children on routine cranial computed tomography images. METHODS: We retrospectively analyzed the cranial computed tomography images of 500 children under the age of 18. Besides the 0.5 mm axial images, maximum intensity projection and 3D reconstructions were also used. The existence of incomplete or complete Pa and Ps bars were investigated. RESULTS: Incomplete and complete Pa bar was detected in 4.6% and 2.2% of the cases, respectively. Incomplete Ps bar was seen in 13.6% of the cases and complete was in 6%. In total, per 1000 sides, 12 (2.4%) complete and 27 (5.4%) incomplete Pa bars were detected. In the same way, 35 (7%) complete and 88 (17.6%) incomplete Ps bars were seen. The smallest age ossification detected was 5 months old. Additionally, the prevalence of Pa and Ps bars between the under and over 10 years old age groups were statistically significant. Aging increased the prevalence. CONCLUSION: Considering our results, it seems that the ossification of Pa and Ps ligaments may not be solely related with aging.


Assuntos
Ligamentos , Osso Esfenoide , Criança , Humanos , Lactente , Filogenia , Prevalência , Estudos Retrospectivos
10.
Cardiovasc Toxicol ; 21(11): 927-935, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34339021

RESUMO

In the present study, we aimed to compare clinical and radiological findings between patients with and without pulmonary embolism (PE) and determine possible risk factors for PE development among patients with cancer. This was a retrospective study that examined the clinical features and tomographic findings of patients with cancer who underwent thoracic tomography for suspected PE. A total of 487 cases were included in the study. Of which, 45 (9.2%) patients were found to have PE. The effect of gender on PE was found to be significant (p = 0.018). Patients with PE compared to those without PE are 2.828 times more likely to be women than men. It was determined that the probability of not having a history of coronary artery disease (CAD) was 2.930 times (p = 0.036), probability of shortness of breath was 4.153 times (p < 0.001), syncope/presyncope was 6.859 times (p = 0.007), and palpitation was 5.613 times (p = 0.040) more in those with PE compared to those without PE. The mean pulse rate per minute was significantly higher in patients with PE than in those without (p = 0.009). Ninety-one percent of patients had parenchymal abnormalities, 43.7% had mediastinal and cardiovascular abnormalities, 35.5% had pleural abnormalities, 32.9% had thoracic wall abnormalities (p = 0.109, p < 0.001, p = 0.022, p = 0.685, respectively). Our study demonstrated that patients with PE were more likely to be women, patients with a history of palpitations, shortness of breath, syncope/presyncope, and those not having a history of CAD. More comprehensive studies are required in the future to clearly identify the risk factors for PE in patients with cancer and clarify the indications for tomography.


Assuntos
Tomografia Computadorizada Multidetectores , Neoplasias/complicações , Embolia Pulmonar/diagnóstico por imagem , Radiografia Torácica , Idoso , Idoso de 80 Anos ou mais , Antineoplásicos/uso terapêutico , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias/tratamento farmacológico , Neoplasias/patologia , Neoplasias/fisiopatologia , Valor Preditivo dos Testes , Prognóstico , Embolia Pulmonar/etiologia , Estudos Retrospectivos , Medição de Risco , Fatores de Risco , Fatores Sexuais , Fatores de Tempo
11.
J Clin Res Pediatr Endocrinol ; 13(3): 342-346, 2021 08 23.
Artigo em Inglês | MEDLINE | ID: mdl-32702947

RESUMO

Cases of neurofibromatosis type 1 (NF1)-associated medullary thyroid carcinoma (MTC) or C-cell hyperplasia are rarely associated with other endocrine tumors or cases with a multiple endocrine neoplasia type 2. In these patients, mutations were detected in the NF1 gene but no mutations were detected in the RET gene. Although vandetanib has been shown to improve progression-free survival in adults with advanced MTC, data in pediatric patients are limited. Herein, we report the use and outcome of vandetanib in a pediatric MTC case in which NF1 gene and RET proto-oncogen mutation were identified together.


Assuntos
Antineoplásicos/uso terapêutico , Biomarcadores Tumorais/genética , Carcinoma Neuroendócrino/tratamento farmacológico , Mutação em Linhagem Germinativa , Neurofibromatose 1/genética , Neurofibromina 1/genética , Piperidinas/uso terapêutico , Proteínas Proto-Oncogênicas c-ret/genética , Quinazolinas/uso terapêutico , Neoplasias da Glândula Tireoide/tratamento farmacológico , Adolescente , Carcinoma Neuroendócrino/diagnóstico , Carcinoma Neuroendócrino/genética , Homozigoto , Humanos , Masculino , Neurofibromatose 1/diagnóstico , Neoplasias da Glândula Tireoide/diagnóstico , Neoplasias da Glândula Tireoide/genética , Resultado do Tratamento
12.
J Pediatr Hematol Oncol ; 43(2): e198-e202, 2021 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-31815888

RESUMO

Constitutional mismatch repair deficiency (CMMRD) is an autosomal recessively inherited childhood cancer predisposition syndrome results from biallelic germline mutations affecting the key DNA mismatch repair gene: MLH1, MSH2, MSH6, or PMS2. CMMRD is associated with a high risk of developing early onset of central nervous system tumors, hematologic, and intestinal tract tumors. Clinical manifestations, genetic screening, and cancer prevention strategies are limited. In this report we present a patient with metachronous Wilms tumor, glioblastoma, and acute T-cell lymphoblastic leukemia. He had cutaneous features of neurofibromatosis type 1 (NF1). Molecular testing revealed a novel homozygous mutation in MSH6 (c.2590G>T; p.G864*) that has not been reported previously. CMMRD should be considered in patients with cutaneous features similar to NF1 if tumor is found other than expected tumors in NF, early onset cancer, and strong family history of cancer.


Assuntos
Neoplasias Encefálicas/complicações , Neoplasias Colorretais/complicações , Proteínas de Ligação a DNA/genética , Glioblastoma/patologia , Leucemia de Células T/patologia , Mutação , Segunda Neoplasia Primária/patologia , Síndromes Neoplásicas Hereditárias/complicações , Tumor de Wilms/patologia , Neoplasias Encefálicas/genética , Pré-Escolar , Neoplasias Colorretais/genética , Evolução Fatal , Glioblastoma/etiologia , Homozigoto , Humanos , Neoplasias Renais/etiologia , Neoplasias Renais/patologia , Leucemia de Células T/etiologia , Masculino , Segunda Neoplasia Primária/etiologia , Síndromes Neoplásicas Hereditárias/genética , Tumor de Wilms/etiologia
13.
J Cosmet Dermatol ; 20(7): 2247-2258, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-33171021

RESUMO

BACKGROUND: As deep nasolabial folds (NLF) are associated with facial aging, there is an increasing demand for esthetic correction with filler injections. Understanding the anatomy of the angular artery (AA) and facial artery (FA) around the NLF region is essential for ensuring the safety of dermal filler injections into the NLF. The purpose of this study was to provide detailed vascular anatomical information on the course and depth of AA and FA around NLF using Doppler ultrasound on live cases. METHODS: FA was observed from the origin level adjacent to the mandible corpus to the end of its terminal branch AA in 168 hemifaces of 84 cases with Doppler ultrasonography. RESULTS: We made a classification of the FA course based on the NLF. The minimum and maximum depths of the FA along its course were measured in 84 cases. The results showed that its course may be highly superficial (2.5 mm at the mandibular origin, 3.7 mm at the cheilion, 3.7 mm at the nasal ala) or it may follow a very deep course near the periosteum (15.0 mm at the mandibular origin, 18.7 mm at the cheilion, 23.5 mm at the nasal ala). FA depth was varied between 5.98 mm and 6.62 mm at the mandibular origin, between 8.36 mm and 9.20 mm at the cheilion, between 9.52 mm and 10.51 mm at the nasal ala at a 95% confidence interval. CONCLUSIONS: This study suggests that there is no absolutely safe depth or region for nasolabial fold filler injections.


Assuntos
Técnicas Cosméticas , Artérias/diagnóstico por imagem , Técnicas Cosméticas/efeitos adversos , Humanos , Sulco Nasogeniano , Nariz , Ultrassonografia Doppler
14.
Ren Fail ; 42(1): 590-599, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32597278

RESUMO

Background: Prediction of prognosis in Immunoglobulin A Nephropathy (IgAN) and taking appropriate precautions may reduce annual incidence of chronic kidney disease. This may be possible by close follow-up for the development and progression of interstitial fibrosis (IF) or interstitial fibrosis/tubular atrophy (IFTA) in IgAN patients.Aim: To investigate whether Young's elastic modulus (YM) which measured shear wave elastography (SWE) might be used for follow-up of IF or IFTA in IgAN patients.Methods: Prospective study was approved by Human Research Ethics Committee. Group 1 consisted of patients with IgAN. Group 2 consisted of healthy control participants. Young's elastic modulus which is a value of stiffness along with longitudinal stiffness was used to evaluate tissue elasticity. Specificity, sensitivity, positive predictive value (PPV) of YM for the presence of IF and IFTA were evaluated.Results: Group 1 consisted of 30 participants, and group 2 consisted of 32 participants. Sensitivity and specificity of SWE to diagnose presence of IF for YM > 15 kPa were 89% and 90%, respectively. PPV among the ones whom IF was diagnosed by YM >15 kPa was 91%. Sensitivity and specificity of SWE to diagnose presence of IFTA for YM > 15 were 65% and 51%, respectively. PPV among the ones whom IFTA was diagnosed by YM >15 kPa was 78.1%.Conclusions: YM which measured SWE is highly specific and sensitive in the diagnosis of IF, but not for IFTA in IgAN patients. Therefore, progression for IF in IgAN may be followed by SWE.


Assuntos
Técnicas de Imagem por Elasticidade , Glomerulonefrite por IGA/classificação , Glomerulonefrite por IGA/diagnóstico por imagem , Túbulos Renais/patologia , Adulto , Atrofia , Estudos de Casos e Controles , Módulo de Elasticidade , Feminino , Fibrose , Glomerulonefrite por IGA/patologia , Humanos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Sensibilidade e Especificidade
15.
World Neurosurg ; 141: e118-e132, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32413566

RESUMO

PURPOSE: To investigate the characteristics of the prechiasmatic sulcus in children aged between 1-20 years. METHODS: Patient files of 200 children admitted to the university hospital on 2019 were analyzed, retrospectively. The computed tomography images of patients were used to obtain anatomical knowledge containing prechiasmatic sulcus types and dimensions. RESULTS: The measurements related to the sulcal length (6.94 ± 1.25 mm) and sulcal angle (31.01 ± 18.13°) showed that the sulcal length did not alter in children between 1 and 20 years, whereas the sulcal angle did not vary from infancy to prepubescent period, but it was decreasing in postpubescent period. In 29 patients, the sulcal length was observed to divide into 2 parts with an evident angle. The interoptic distance and planum length were found as follows: 14.70 ± 2.85 mm and 14.84 ± 4.12 mm, respectively. The order of PS types was observed as type 4 (26.5%, 53 cases) > type 2 (26%, 52 cases) > type 1 (24%, 48 cases) > type 3 (23.5%, 47 cases). CONCLUSIONS: The sulcal length did not vary in children, whereas the sulcal angle decreased with an irregular pattern. The sulcal angle decreased after prepubescent period, possibly due to the sphenoid sinus pneumatization and spheno-occipital synchondrosis. The sulcal length angle mostly in infants and young children may cause surgical orientation difficult during the resection of tumors using transcranial approaches.


Assuntos
Cabeça/anatomia & histologia , Cabeça/cirurgia , Seio Esfenoidal/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Adolescente , Adulto , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Masculino , Estudos Retrospectivos , Tomografia Computadorizada por Raios X/métodos , Resultado do Tratamento , Adulto Jovem
16.
Surg Radiol Anat ; 42(7): 749-759, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32107596

RESUMO

OBJECTIVES: This retrospective computed tomography (CT) study was aimed to assess the growth dynamic of the external aperture of the carotid canal (EACC) in children aged between 1 and 20 years. METHODS: Two hundred patients (sex 100 females/100 males, average age 10.50 ± 5.77 years) with good head CT image quality were included in this study. CT images of the patients were used to obtain data related to the location, shape and dimension of EACC. RESULTS: EACC shapes were identified as oval shaped, round shaped, and tear-drop shaped in 58.3% (233 sides), 24% (96 sides) and 17.8% (71 sides), respectively. EACC length, disEACC-MSP (distance between EACC and midsagittal plane), and EACC width did not change from the prepubescence period; while, the disEACC-SC (distance between EACC and supramastoid crest) seemed to reach adult size in the postpubescence period. Linear functions for EACC length and width were calculated as: y = 5.453 + 0.091 × years, and y = 5.398 + 0.059 × years, respectively. CONCLUSION: The regression equations of the measured parameters representing the growth dynamic of EACC in children can be helpful to estimate its size, location and angulation, which suggest that the dimension and distances to certain anatomical landmarks seemed to reach adult size in different developmental periods. In this context, the findings of this study may seem to emphasize the importance of preoperative radiological evaluation on skull base, related to EACC, for multidisciplinary surgeon teams during childhood surgeries in terms of patients' positioning, and the selection of appropriate surgical approach.


Assuntos
Artéria Carótida Interna/anatomia & histologia , Base do Crânio/irrigação sanguínea , Osso Temporal/irrigação sanguínea , Adolescente , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Estudos Retrospectivos , Base do Crânio/diagnóstico por imagem , Osso Temporal/diagnóstico por imagem , Tomografia Computadorizada por Raios X , Adulto Jovem
17.
J Pediatr Hematol Oncol ; 42(4): 326-331, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-31259822

RESUMO

Erdheim-Chester disease (ECD) is a proliferative disorder of non-Langerhans histiocytes with a higher incidence in the fifth to seventh decades and rarer occurrence in the pediatric population. Although ECD typically involves bone, it can also affect the central nervous system, cardiovascular system, retro-orbital space, retroperitoneal space, and kidneys, lungs, and skin. A 13-year-old Syrian girl who presented with multisystemic involvement was diagnosed with ECD. The B-Raf proto-oncogene V600E mutation was not detected in ECD lesions. Response to the high-dose interferon-α therapy was excellent in this pediatric patient. In this article, pediatric ECD case reports are also reviewed.


Assuntos
Doença de Erdheim-Chester/tratamento farmacológico , Interferon-alfa/administração & dosagem , Adolescente , Substituição de Aminoácidos , Doença de Erdheim-Chester/diagnóstico , Doença de Erdheim-Chester/genética , Feminino , Humanos , Mutação de Sentido Incorreto , Proto-Oncogene Mas , Proteínas Proto-Oncogênicas B-raf/genética
18.
Tuberk Toraks ; 67(1): 8-14, 2019 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-31130130

RESUMO

INTRODUCTION: Pleural plaques have the possibility of bearing malignancy thus investigation of this entity is important and the most important indicator of malignancy in general is fluorodeoxyglucose (FDG) accumulation in radiological appearance. However there is discrepancy between results of previous studies in the literature about this subject. The aim of this study is to analyze the standardized uptake value of pleural plaques and the cut off levels for malignancy in comparison with computed tomography (CT). MATERIALS AND METHODS: Seventy one patients were included in the study (27F, 44M; mean: 59.9 ± 13.1 years). Oncologic F-18 FDG positron emission tomography/computed tomography (PET/CT) was performed to all the subjects for a different primary tumor. Pleural plaques were identified in all patients in CT component of PET/CT examination. Contrast enhanced and nonenhanced CT images were evaluated by a Radiology Physician independently according to the gold standard pathology. RESULT: The diagnostic sensitivity, specificity of CT was; 39%, 79% respectively and if the cut-off SUVmax level was accepted "4.8" the diagnostic sensitivity and specificity of PET was 71%, and 63% respectively. CONCLUSIONS: According to the results and ROC curves determined in the study the cut-off level for evaluation of pleural plaques in PET examination was "4.8". The sensitivity and accuracy of PET was higher compared to CT with this cut-off value.


Assuntos
Asbestose/diagnóstico , Fluordesoxiglucose F18/farmacologia , Doenças Pleurais/diagnóstico , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada/métodos , Tomografia Computadorizada por Raios X/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Curva ROC , Compostos Radiofarmacêuticos/farmacologia
19.
J Int Adv Otol ; 15(2): 317-320, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-30431015

RESUMO

Axial mesodermal dysplasia complex (AMDC) is a combination of multiple congenital malformations arising due to the mesodermal cell migration, neural tube fusion, and rhombencephalon segmentation. Here, we present the imaging findings of a 15-year-old boy with AMDC who has bilateral inner ear malformations associated with a vestibulocochlear nerve extending to Meckel cave, cystic lesion in prepontine cisterna, cervical vertebral segmentation anomalies, and maxillar bone anomalies.


Assuntos
Anormalidades Múltiplas/patologia , Orelha Interna/anormalidades , Mesoderma/anormalidades , Nervo Vestibulococlear/anormalidades , Adolescente , Vértebras Cervicais/anormalidades , Humanos , Imageamento por Ressonância Magnética , Masculino , Tomografia Computadorizada por Raios X
20.
Braz J Cardiovasc Surg ; 33(1): 104-106, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29617509

RESUMO

Cardiac angiosarcomas are extremely rare in childhood, they are rapidly progressive tumours that often present themselves as diagnostic dilemmas, resulting in delayed diagnosis. Also, extracardiac manifestations, including abdominal pain, are extremely rare in patients with intracardiac tumors. We herein present the case of a 15-year-old girl who presented with abdominal pain. Echocardiography and thoracic computed tomography showed right atrial mass. The patient underwent surgery, chemotherapy, and radiotherapy. Eight months after treatment, abdominal recurrence was detected. The abdominal mass was resected, and radiotherapy and new chemotherapy protocol were given. The present case illustrates a rare case of primary cardiac angiosarcoma posing a diagnostic dilemma in an adolescent girl.


Assuntos
Dor Abdominal/etiologia , Neoplasias Cardíacas/complicações , Hemangiossarcoma/complicações , Dor Abdominal/diagnóstico por imagem , Adolescente , Feminino , Neoplasias Cardíacas/diagnóstico por imagem , Neoplasias Cardíacas/cirurgia , Hemangiossarcoma/diagnóstico por imagem , Hemangiossarcoma/cirurgia , Humanos , Doenças Raras , Tomografia Computadorizada por Raios X
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...