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Carol Tan

Publications and source records attributed to Carol Tan.

11 recordsLinked to original sources
PubMed2006

FDG-PET maximum standardised uptake value is associated with variation in survival: analysis of 498 lung cancer patients.

We sought to establish the extent to which tumour uptake of [18F]-fluoro2-deoxy-glucose is associated with survival in patients with primary lung cancer. From our analysis of data concerning 498 lung cancer patients, including surgical and non-surgical cases, we conclude that there is a clear association between higher tumour uptake of glucose and worse survival.

Aged↗
PubMed2006

Plasmacytoid dendritic cells from human lung cancer draining lymph nodes induce Tc1 responses.

Dendritic cells (DC) resident in draining lymph nodes (LN) of patients with lung cancer are proposed to have a critical role in stimulating anti-tumor immunity. CpG oligodeoxynucleotides are undergoing clinical trials in patients with lung cancer and are likely to target plasmacytoid-DC. The present study, therefore, investigated the capacity of plasmacytoid-DC from human lung cancer draining LN to respond to CpG for activation of T cell responses relevant to anti-tumor immunity. The phenotype of DC was examined by flow cytometry, and cytokine production by cytometric bead array (CBA) and ELISA. Plasmacytoid-DC, purified by cell sorting, were immature but expressed the toll-like receptor, TLR9. Plasmacytoid-DC responded to the CpG oligodeoxynucleotide, CpG 2216, by production of the proinflammatory cytokines, IFN-alpha and IL-6. DC were cocultured with normal, allogeneic T cells, and cytokine production determined by CBA and immunophenotyping. CpG 2216 enhanced IFN-gamma production and induced intracellular production of IFN-gamma by CD8(+) and CD4(+), granzyme B by CD8(+), and IL-2 by CD4(+) T cells, respectively. Ligation of CD40 on plasmacytoid-DC combined with exposure to CpG 2216 also strongly enhanced IFN-gamma production. There was no significant difference between the responses of plasmacytoid-DC from patients with lung cancer and patients with benign carcinoid tumors with no pathologic LN involvement. These results indicate that plasmacytoid DC from the draining LN of patients with lung cancer effectively induce Tc1 immunity and could, therefore, represent a novel and attractive target for immunotherapeutic intervention.

CD40 Ligand↗
PubMed2006

The evidence on the effectiveness of management for malignant pleural effusion: a systematic review.

The aim of this study was to review systematically the available evidence on pleurodesis for malignant effusion, focusing on the choice of the agents, route of delivery and other strategies to improve outcomes. Four electronic databases (MEDLINE, EMBASE, Web of Science and Cochrane Controlled Trials Register) were searched, reference lists checked and letters requesting details of unpublished trials and data sent to authors of previous trials. Studies of malignant pleural effusion in humans were selected with no language restrictions applied. Criteria for randomised clinical trial (RCT) eligibility were random allocation of patients and non-concurrent use of another experimental medication or device. Methodological quality evaluation of the trials was based on randomisation, blinding, allocation concealment and intention to treat analysis. A random effect model was used to combine the relative risk estimates of the treatment effects whenever pooling for an overall effect was considered appropriate. Forty-six RCTs with a total of 2053 patients with malignant pleural effusions were reviewed for effectiveness of pleurodesis. Talc tended to be associated with fewer recurrences when compared to bleomycin (RR, 0.64; 95% CI, 0.34-1.20) and, with more uncertainty, to tetracycline (RR, 0.50; 95% CI, 0.06-4.42). Tetracycline (or doxycycline) was not superior to bleomycin (RR, 0.92; 95% CI, 0.61-1.38). When compared with bedside talc slurry, thoracoscopic talc insufflation was associated with a reduction in recurrence (RR, 0.21; 95% CI, 0.05-0.93). Strategies such as rolling the patient after instillation of the sclerosing agent, protracted drainage of the effusion and use of larger chest tubes were not found to have any substantial advantages. Talc appears to be effective and should be the agent of choice for pleurodesis. Thoracoscopic talc insufflation is associated with fewer recurrences of effusions compared with bedside talc slurry, but this is based on two small studies. Where thoracoscopy is unavailable bedside talc pleurodesis has a high success rate and is the next best option.

Chest Tubes↗
PubMed2003

Radical surgery for mesothelioma: how can we obtain evidence?

Asbestos exposure in industry and construction sites in the 1960s and 1970s has left a legacy of mesothelioma, a diffuse pleural cancer, with a lag time of 40 to 50 years and due to peak around 2015 to 2020. Some surgeons believe that by radical surgery they can prolong life and relieve symptoms, but the evidence comes from very carefully selected series. How do surgeons respond to demand for evidence of benefit? In this article we explore how evidence for major surgical operations has been gained and how mesothelioma fits into this history.

Evidence-Based Medicine↗
PubMed2003

Intrapleural tumor dissemination after video-assisted thoracoscopic surgery metastasectomy.

In a 34-year-old woman extensive intrapleural disease developed within 1 year of video-assisted thoracoscopic surgery (VATS) removal of two pulmonary metastases from a previously treated synovial sarcoma. She underwent a successful complete pleurectomy through a left thoracotomy to excise the pleural tumor and remains well 6 months later. This case highlights tumor dissemination as one of the pitfalls of VATS metastasectomy and raises concerns about using VATS in this situation.

Adult↗
PubMed2003

Mediastinal haemangiomas in children.

A 5-month-old girl presented with upper airway obstruction and was found to have a mediastinal mass compressing the trachea. She successfully underwent resection of this mass, later confirmed to be a juvenile haemangioma. This case highlights mediastinal haemangiomas in the paediatric population as a diagnostic and therapeutic challenge, and the importance of a multidisciplinary approach in the management of such patients.

Cough↗