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1.
Front Oncol ; 11: 710585, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34568037

RESUMO

Background: Treatment of malignant melanoma has undergone a paradigm shift with the advent of immune checkpoint inhibitors (ICI) and targeted therapies. However, access to ICI is limited in low-middle income countries (LMICs). Patients and Methods: Histologically confirmed malignant melanoma cases registered from 2013 to 2019 were analysed for pattern of care, safety, and efficacy of systemic therapies (ST). Results: There were 659 patients with a median age of 53 (range 44-63) years; 58.9% were males; 55.2% were mucosal melanomas. Most common primary sites were extremities (36.6%) and anorectum (31.4%). Nearly 10.8% of the metastatic cohort were BRAF mutated. Among 368 non-metastatic patients (172 prior treated, 185 de novo, and 11 unresectable), with a median follow-up of 26 months (0-83 months), median EFS and OS were 29.5 (95% CI: 22-40) and 33.3 (95% CI: 29.5-41.2) months, respectively. In the metastatic cohort, with a median follow up of 24 (0-85) months, the median EFS for BSC was 3.1 (95% CI 1.9-4.8) months versus 3.98 (95% CI 3.2-4.7) months with any ST (HR: 0.69, 95% CI: 0.52-0.92; P = 0.011). The median OS was 3.9 (95% CI 3.3-6.4) months for BSC alone versus 12.0 (95% CI 10.5-15.1) months in any ST (HR: 0.38, 95% CI: 0.28-0.50; P < 0.001). The disease control rate was 51.55%. Commonest grade 3-4 toxicity was anemia with chemotherapy (9.5%) and ICI (8.8%). In multivariate analysis, any ST received had a better prognostic impact in the metastatic cohort. Conclusions: Large real-world data reflects the treatment patterns adopted in LMIC for melanomas and poor access to expensive, standard of care therapies. Other systemic therapies provide meaningful clinical benefit and are worth exploring especially when the standard therapies are challenging to administer.

2.
J Vasc Interv Radiol ; 32(4): 504-509, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33612370

RESUMO

PURPOSE: To evaluate safety and long-term efficacy of radiofrequency (RF) ablation in treatment of chondroblastoma. MATERIALS AND METHODS: This retrospective analysis comprised 27 consecutive patients with histopathologically proven chondroblastoma treated by RF ablation. The tumors were located in the proximal humerus (n = 6), proximal tibia (n = 8), proximal femur (n = 6), distal femur (n = 5), acromion process (n = 1), and lunate (n = 1). In 19 patients (70.3%), the tumor was in the weight-bearing area of the bone. Clinical response was assessed by comparing pain scores and functional assessment by Musculoskeletal Tumor Society (MSTS) score before and after ablation. Patients were followed for a minimum of 1 year to rule out complications and recurrence. RESULTS: Technical success rate was 100%. Mean pain score before the procedure was 7.34 (range, 7-9); all patients experienced a reduction in pain, with 25 (92.6%) patients reporting complete pain relief at 6 weeks. Mean MSTS score before the procedure was 15.4, whereas mean MSTS score at 6 weeks after the procedure was 28.6, suggesting significant functional improvement (P < .0001). Two patients developed osteonecrosis and collapse of the treated bone. There were no recurrences. CONCLUSIONS: Percutaneous RF ablation is a safe and effective option for treating chondroblastoma of the appendicular skeleton.


Assuntos
Neoplasias Ósseas/cirurgia , Condroblastoma/cirurgia , Ablação por Radiofrequência , Adolescente , Adulto , Neoplasias Ósseas/diagnóstico por imagem , Neoplasias Ósseas/fisiopatologia , Criança , Condroblastoma/diagnóstico por imagem , Condroblastoma/patologia , Estudos de Viabilidade , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Complicações Pós-Operatórias/etiologia , Ablação por Radiofrequência/efeitos adversos , Radiografia Intervencionista , Estudos Retrospectivos , Centros de Atenção Terciária , Fatores de Tempo , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Adulto Jovem
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