26
|
Rahal R, Xu J, Fung S, Bryant H. Two indicators of hospital resource efficiency in cancer care. ACTA ACUST UNITED AC 2014; 21:144-6. [PMID: 24940095 DOI: 10.3747/co.21.2022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Acute inpatient hospital stays represent a major portion of cancer care costs. [...]
Collapse
|
27
|
Fung S, Forte T, Rahal R, Niu J, Bryant H. Provincial rates and time trends in pancreatic cancer outcomes. ACTA ACUST UNITED AC 2013; 20:279-81. [PMID: 24155633 DOI: 10.3747/co.20.1672] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Pancreatic cancer, often called the “silent killer,” is the twelfth most common cancer in Canada, with an estimated 4600 new cases in 2012. [...]
Collapse
|
28
|
Yap YHY, Tan N, Fung S, Aziz AA, Tan C, Ng S. Nutrient composition, antioxidant properties, and anti-proliferative activity of Lignosus rhinocerus Cooke sclerotium. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2013; 93:2945-2952. [PMID: 23460242 DOI: 10.1002/jsfa.6121] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2012] [Revised: 02/18/2013] [Accepted: 03/04/2013] [Indexed: 06/01/2023]
Abstract
BACKGROUND Lignosus rhinocerus (tiger milk mushroom) is an important medicinal mushroom used in Southeast Asia and China, and its sclerotium can be developed into functional food/nutraceuticals. The nutrient composition, antioxidant properties, and anti-proliferative activity of wild type and a cultivated strain of L. rhinocerus sclerotia were investigated. RESULTS The sclerotial powder has high carbohydrate but low fat content. Interestingly, the cultivated strain contains higher amounts of protein and water-soluble substances than the wild type. Phenolic content of hot-water, cold-water, and methanol extracts of the sclerotial powders ranged from 19.32 to 29.42 mg gallic acid equivalents g⁻¹ extract, while the ferric reducing antioxidant power values ranged from 0.006 to 0.016 mmol min⁻¹ g⁻¹ extract. The DPPH• , ABTS•⁺ , and superoxide anion radical scavenging activities of the extracts ranged from 0.52 to 1.12, 0.05 to 0.20, and -0.98 to 11.23 mmol Trolox equivalents g⁻¹ extract, respectively. Both strains exhibited strong superoxide anion radical scavenging activity comparable to rutin. The cold-water extracts exhibited anti-proliferative activity against human breast carcinoma (MCF-7) cells, with IC₅₀ values of 206 µg mL⁻¹ and 90 µg mL⁻¹ for the wild type and cultivated strains, respectively. CONCLUSION The cultivated L. rhinocerus sclerotium has the potential to be developed into functional food/nutraceuticals.
Collapse
|
29
|
Dore G, Lawitz E, H'ezode C, Shafran S, Ramji A, Tatum H, Taliani G, Tran A, Brunetto M, Zaltron S, Strasser S, Weis N, Ghesquiere W, Lee S, Larrey D, Pol S, Harley H, George J, Fung S, de L'edinghen V, Hagens P, Cohen D, Cooney E, Noviello S, Hughes E. 1418 DACLATASVIR COMBINED WITH PEGINTERFERON ALFA-2A AND RIBAVIRIN FOR 12 OR 16 WEEKS IN PATIENTS WITH HCV GENOTYPE 2 OR 3 INFECTION: COMMAND GT2/3 STUDY. J Hepatol 2013. [DOI: 10.1016/s0168-8278(13)61417-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/26/2023]
|
30
|
Afdhal N, Buti M, Fung S, Gane E, Flaherty J, Martins E, Bekele N, Bornstein J, Marcellin P. 497 FACTORS ASSOCIATED WITH REGRESSION OF CIRRHOSIS IN PATIENTS WITH CHORNIC HEPATITIS B (CHB) INFECTION TREATED WITH TENOFOVIR DISOPROXIL FUMARATE (TDF). J Hepatol 2012. [DOI: 10.1016/s0168-8278(12)60510-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
|
31
|
Kassam Z, Mackay H, Buckley CA, Fung S, Pintile M, Oza A, Brierley J, Swallow C, Cummings B, Knox JJ, Kim J, Wong R, Siu L, Feld R, Ringash J. Adjuvant chemoradiation for gastric cancer with infusional 5-fluorouracil and cisplatin: a phase I study. ACTA ACUST UNITED AC 2011; 17:34-41. [PMID: 20697512 DOI: 10.3747/co.v17i4.521] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE This phase I study aimed to determine the maximal tolerated dose of cisplatin administered every 2 weeks with infusional 5-fluorouracil (5FU) and concurrent radiation therapy (RT) in patients after complete resection of gastric adenocarcinoma. METHODS Patients with resected stage IB to IV (M0) gastric adenocarcinoma were treated with 12 weeks of infusional 5FU (200 mg/m(2) daily) and with RT (45 Gy in 25 fractions starting on day 16). Cisplatin was administered in escalating doses (0, 20, 30, and 40 mg/m(2)) in weeks 1, 3, 5, and 7. In the final cohort, patients received an additional dose of cisplatin (40 mg/m(2)) in week 9. RESULTS Among the 34 patients [median age: 56 years (range: 31-77 years)] who were assessable for toxicity, 5 experienced dose-limiting toxicities: 1 sepsis (cohort 1), 1 fatigue (cohort 2), 3 upper gastrointestinal toxicity (1 in cohort 2, 2 in cohort 5). Cohort 5 exceeded the maximal tolerated dose. Median follow-up was 2.5 years (range: 0.3-5 years). The 3-year overall and relapse-free survival rates were 86% and 71% respectively; median survival was not reached. CONCLUSIONS Cisplatin was well tolerated in combination with infusional 5FU and RT, showing promising activity in the adjuvant treatment of gastric cancer. Infusional 5FU 200 mg/m(2) daily for 12 weeks with cisplatin 40 mg/m(2) in weeks 1, 3, 5, and 7 and with concurrent RT 45 Gy in 25 fractions, starting at day 16, is being explored in a phase II study at our institution.
Collapse
|
32
|
Kassam Z, Mackay H, Buckley CA, Fung S, Pintile M, Kim J, Ringash J. Evaluating the impact on quality of life of chemoradiation in gastric cancer. ACTA ACUST UNITED AC 2011; 17:77-84. [PMID: 20697519 DOI: 10.3747/co.v17i4.522] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Our phase I study prospectively evaluated quality of life (QOL) in patients undergoing adjuvant chemoradiation for gastric adenocarcinoma. METHODS Thirty-three patients receiving radiotherapy (45 Gy in 25 fractions), together with 12 weeks of infusional 5-fluorouacil and escalating doses of cisplatin every 2 weeks, completed the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire C30 at five time points: baseline, completion of radiation, 4 weeks after completion of radiation, 6-12 months after completion of chemoradiation, and 2-3 years after completion of chemoradiation. RESULTS Mean age of the patients was 56 years (range: 31-77 years); 55% of the patients were male. Median follow-up was 2.7 years (range: 0.3-5 years). The 3-year overall survival was 83%. Five patients experienced dose-limiting toxicity (DLT). Median scores on global QOL and on the social, role, emotional, nausea and vomiting, and fatigue scales showed clinically and statistically significant worsening at completion of radiation. Statistical but not clinical worsening was found for the physical and appetite scales. By 6-12 months, no subscale showed a difference, on average, from the baseline score. However, up to 45% of the patients remained below baseline on at least 1 subscale. Patients with DLT had worse scores on the emotional and the nausea and vomiting scales. Scores for global QOL and for nausea and vomiting were significantly associated with chemotherapy dose. CONCLUSIONS During chemoradiation, QOL is impaired. Although most scores return to baseline, recovery may take 6-12 months, and subscale scores remain below baseline in a significant proportion of patients.
Collapse
|
33
|
To CK, Yang B, Beling CD, Fung S, Ling CC, Gong M. Positron annihilation study of defects in electron-irradiated single crystal zinc oxide. ACTA ACUST UNITED AC 2011. [DOI: 10.1088/1742-6596/262/1/012059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
34
|
Taremi M, Hope A, Lindsay P, Purdie T, Fung S, Jaffray D, Dawson L, Bezjak A. Radiotherapy Induced Bone Injury (RIBI) as a Late Side Effect in Patients Treated with Stereotactic Lung Radiotherapy. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
35
|
Arif S, Bayley A, O'Sullivan B, Cummings B, Fung S, Yu E, Breen S, Chen E, Waldron J, Kim J. Patterns of Failure after Intensity Modulated Radiation Therapy (IMRT) for Nasopharyngeal Cancer. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
36
|
Gomez-Iturriaga A, Crook J, Ma C, Fung S. PSA Profiles after Iodine 125 Prostate Brachytherapy (BT). Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
37
|
Huang S, Goldstein D, Weinreb I, Perez-Ordonez B, Fung S, Irish J, Waldron J, Kim J, Cummings B, O'Sullivan B. Positive Postradiotherapy Planned Neck Dissection is Strongly Associated with Increased Distant Metastasis Rather Than Regional Relapse. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
38
|
O'Neil SH, Azoff J, Buranahirun C, Dhall G, Panigrahy A, Borchert M, Khatua S, Ji L, Sposto R, Finlay J, Gong X, Schwartz P, Linskey M, Bota DA, Wefel JS, Patwardhan SY, Strange C, Emily F, Celine A, Penelope K, Anne-Sophie C, Rolando DM, Michael P, Correa DD, Shi W, Abrey L, DeAngelis L, Thaler H, Habets EJ, Walchenbach R, Kloet A, Zwinkels H, Klein M, Vecht CJ, Taphoorn MJ, Ambachtsheer N, van Nieuwenhuizen D, Heimans JJ, Reijneveld JC, Peerdeman SM, Klein M, van Nieuwenhuizen D, Lagemaat C, Heimans JJ, Peerdeman SM, Klein M, Reijneveld JC, Peters KB, Reardon DA, Vredenburgh JJ, Desjardins A, Friedman HS, Driever PH, Koustenis E, Henze G, De Sonneville L, Rueckriegel SM, Mok K, Klein D, Del Maestro R, Petrecca K, Olivier A, Schanker BD, Curry WT, Edelstein K, Spiegler BJ, Fung S, Panzarella T, Hodgson DC, Mabbott DJ, Laperriere N, Tabori U, Bouffet E, Mason WP. Neuro-cognitive. Neuro Oncol 2010. [DOI: 10.1093/neuonc/noq116.s7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
39
|
Liu Y, Chen TP, Ding L, Li YB, Zhang S, Fung S. A two-terminal write-once-read-many-times-memory device based on an aluminum nitride thin film containing Al nanocrystals. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2010; 10:5796-5799. [PMID: 21133107 DOI: 10.1166/jnn.2010.2440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A switching from a high-conduction state to a low-conduction state occurs in an AIN thin film containing Al nanocrystals (nc-Al) when the nc-Al is charged with electrons. The switching is explained in terms of breaking of the conductive percolation paths of the nc-AI as a result of the charging of the nc-Al. A write-once-read many times-memory (WORM) device is demonstrated based on this phenomenon. The device can be switched by charging the nc-Al with a voltage of +10 V for 100 ms, yielding a current ratio of the two memory states of more than 300 at the reading voltage of 1 V. The charged state (i.e., the low-conduction state) remains unchanged after more than 1 x 106 read cycles, and its retention time is predicted to be more than 10 years.
Collapse
|
40
|
Yang M, Chen TP, Wong JI, Liu Y, Tseng AA, Fung S. Charge storage behaviors of Ge nanocrystals embedded in SiO2 for the application in non-volatile memory devices. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2010; 10:4517-4521. [PMID: 21128450 DOI: 10.1166/jnn.2010.2371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Ge nanocrystals distributed in the SiO2 of metal-oxide-semiconductor structure are synthesized by low-energy Ge ion implantation with various energies and doses. Their charge storage behaviors are influenced by both the ion implantation dose and energy. The larger flatband voltage shift achieved by increasing either the implantation dose or energy is explained by the locations and concentration of the charge trapping sites. The smaller charge loss achieved by decreasing the implantation dose or increasing the implantation energy is explained by the co-existence of the charge leakage to the gate electrode and the lateral charge loss to the adjacent Ge nanocrystals.
Collapse
|
41
|
Payabvash S, Kamalian S, Fung S, Wang Y, Passanese J, Kamalian S, Souza LCS, Kemmling A, Harris GJ, Halpern EF, González RG, Furie KL, Lev MH. Predicting language improvement in acute stroke patients presenting with aphasia: a multivariate logistic model using location-weighted atlas-based analysis of admission CT perfusion scans. AJNR Am J Neuroradiol 2010; 31:1661-8. [PMID: 20488905 DOI: 10.3174/ajnr.a2125] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Prediction of functional outcome immediately after stroke onset can guide optimal management. Most prognostic grading scales to date, however, have been based on established global metrics such as total NIHSS score, admission infarct volume, or intracranial occlusion on CTA. Our purpose was to construct a more focused, location-weighted multivariate model for the prediction of early aphasia improvement, based not only on traditional clinical and imaging parameters, but also on atlas-based structure/function correlation specific to the clinical deficit, using CT perfusion imaging. MATERIALS AND METHODS Fifty-eight consecutive patients with aphasia due to first-time ischemic stroke of the left hemisphere were included. Language function was assessed on the basis of the patients admission and discharge NIHSS scores and clinical records. All patients had brain CTP and CTA within 9 hours of symptom onset. For image analysis, all CTPs were automatically co-registered to MNI-152 brain space and parcellated into mirrored cortical and subcortical regions. Multiple logistic regression analysis was used to find independent imaging and clinical predictors of language recovery. RESULTS By the time of discharge, 21 (36%) patients demonstrated improvement of language. Independent factors predicting improvement in language included rCBF of the angular gyrus GM (BA 39) and the lower third of the insular ribbon, proximal cerebral artery occlusion on admission CTA, and aphasia score on the admission NIHSS examination. Using these 4 variables, we developed a multivariate logistic regression model that could estimate the probability of early improvement in aphasia and predict functional outcome with 91% accuracy. CONCLUSIONS An imaging-based location-weighted multivariate model was developed to predict early language improvement of patients with aphasia by using admission data collected within 9 hours of stroke onset. This pilot model should be validated in a larger, prospective study; however, the semiautomated atlas-based analysis of brain CTP, along with the statistical approach, could be generalized for prediction of other outcome measures in patients with stroke.
Collapse
|
42
|
Edelstein K, Spiegler BJ, Fung S, Panzarella T, Hodgson DC, Mabbott DJ, Laperriere N, Tabori U, Bouffet E, Mason WP. Long-term neurocognitive outcomes in adult survivors of childhood medulloblastoma. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.9554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
43
|
Kumar A, Fung S, Lichtneckert R, Reichert H, Hartenstein V. Arborization pattern of engrailed-positive neural lineages reveal neuromere boundaries in the Drosophila brain neuropil. J Comp Neurol 2009; 517:87-104. [PMID: 19711412 DOI: 10.1002/cne.22112] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The Drosophila brain is a highly complex structure composed of thousands of neurons that are interconnected in numerous exquisitely organized neuropil structures such as the mushroom bodies, central complex, antennal lobes, and other specialized neuropils. While the neurons of the insect brain are known to derive in a lineage-specific fashion from a stereotyped set of segmentally organized neuroblasts, the developmental origin and neuromeric organization of the neuropil formed by these neurons is still unclear. In this study we used genetic labeling techniques to characterize the neuropil innervation pattern of engrailed-expressing brain lineages of known neuromeric origin. We show that the neurons of these lineages project to and form most arborizations, in particular all of their proximal branches, in the same brain neuropil compartments in embryonic, larval and adult stages. Moreover, we show that engrailed-positive neurons of differing neuromeric origin respect boundaries between neuromere-specific compartments in the brain. This is confirmed by an analysis of the arborization pattern of empty spiracles-expressing lineages. These findings indicate that arborizations of lineages deriving from different brain neuromeres innervate a nonoverlapping set of neuropil compartments. This supports a model for neuromere-specific brain neuropil, in which a given lineage forms its proximal arborizations predominantly in the compartments that correspond to its neuromere of origin.
Collapse
|
44
|
Taremi M, Dahele M, Purdie T, Bissonnette JP J, Fung S, Brade A, Cho J, Hope A, Sun A, Bezjak A. Patterns of Failure and Salvage Therapy in Stereotactic Body Radiotherapy for Stage I Non–small Cell Lung Cancer. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.1010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
45
|
Patil N, Brierley J, van Prooijen M, Heydarian M, Mckinnon S, Ladak S, Fung S, Tsang R. Excellent Clinical Outcome is Maintained for Pituitary Adenomas Treated with Stereotactic Radiotherapy using a Narrow Margin. Int J Radiat Oncol Biol Phys 2009. [DOI: 10.1016/j.ijrobp.2009.07.583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
46
|
Taremi M, Pearson S, Dahele M, Fung S, Bissonnette JP, Purdie T, Franks K, Brade A, Cho J, Hope A, Sun A, Bezjak A. 12 PRINCESS MARGARET HOSPITAL EXPERIENCE WITH LUNG STEREOTACTIC BODY RADIOTHERAPY FOR EARLY STAGE NONSMALL CELL LUNG CANCER. Radiother Oncol 2009. [DOI: 10.1016/s0167-8140(12)72399-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
47
|
Williamson D, Fung S, Pintilie M, Dinniwell R, Fyles A. Local control with conventional and hypofractionated adjuvant radiotherapy for ductal carcinoma in-situ: is there a difference in outcome? Cancer Res 2009. [DOI: 10.1158/0008-5472.sabcs-1162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Abstract #1162
Purpose
 Trials of adjuvant whole breast radiotherapy (WBRT) following breast-conserving surgery for invasive breast cancer indicate equivalent efficacy and morbidity for conventional and hypofractionated treatment. WBRT for ductal carcinoma in-situ (DCIS) improves local control, however an optimal dose fractionation remains undefined. Our group policy allowed for the use of both schedules, therefore we compared local control in women with DCIS following breast-conserving surgery.
 Methods
 Two hundred and sixty six patients treated between January 1999 and December 2004 with conventional (50 Gy/25 fractions) or hypofractionated (42.4 Gy/16 daily fractions or 40 Gy/16 fractions + 12.5 Gy/5 fraction boost) radiotherapy schedules to the whole breast after breast-conserving surgery for DCIS were identified and retrospectively reviewed. Treatment schedules were evaluated for outcomes in terms of ipsilateral breast recurrence.
 Results
 The median age at diagnosis 56.7 years (range 32.2-83.8 years), and 82% (218 patients) presented with mammographic abnormality. Median tumour size was 1.5 cm (range 0.4-10 cm), grade 3 tumours were present in 105 women (39%), and comedonecrosis in 145 (55%). Fifty-one patients (19%) had multifocal disease. Median follow-up was 45.1 months (range 0.7-106.8 months). Prognostic features were well matched in both groups.
 One-hundred and four patients (39%) were treated with conventional and 162 (61%) with hypofractionated WBRT. There were a total of 14 confirmed local recurrences in the previously radiated breast. Six recurrences occurred in the 104 (5.8%) patients treated with a conventional schedule and 8 of 162 (4.9%) patients treated with a hypofractionated schedule. Actuarial risk of recurrence at 4 years was 7% with hypofractionated WBRT and 5% with a standard schedule (p=0.85).
 
 Eight patients recurred with DCIS and 6 with invasive carcinomas, all 14 were treated surgically with adjuvant treatment as indicated clinically, 1 patient with clinical recurrent disease refused biopsy and further conventional treatment. Univariate analysis showed a trend to increased risk of recurrence with grade 3 tumours (10% at 4 years vs. 3% for grade1/2, p=0.053) and presence of comedonecrosis (8% vs. 2%, p=0.096), but not multi-focal disease (7% vs. 5%, p=0.78).
 Conclusions
 Hypofractionated adjuvant WBRT schedules following breast-conserving surgery for DCIS have comparable local control rates to a conventional radiation schedule. Hypofractionated WBRT is more convenient for patients, has equivalent morbidity and should be considered in this patient group.
Citation Information: Cancer Res 2009;69(2 Suppl):Abstract nr 1162.
Collapse
|
48
|
Pakrou N, Casson R, Fung S, Ferdowsi N, Lee G, Selva D. Erratum: South Australian adolescent ophthalmic sun protective behaviours. Eye (Lond) 2008. [DOI: 10.1038/sj.eye.6702697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
|
49
|
Ding L, Chen TP, Liu Y, Ng CY, Yang M, Wong JI, Zhu FR, Tan MC, Fung S, Chen XD, Huang Y. Evolution of photoluminescence mechanisms of Si(+)-implanted SiO2 films with thermal annealing. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2008; 8:3555-3560. [PMID: 19051910 DOI: 10.1166/jnn.2008.128] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The information of band structure of silicon nanocrystal (nc-Si) embedded in SiO2 thin films synthesized by Si ion implantation and subsequent thermal annealing at various temperatures has been obtained from spectroscopy ellipsometric (SE) analysis. The indirect band structure and the energy gap of the nc-Si are not affected by the annealing. In contrast, the photoluminescence (PL) spectra show a continuous evolution with the annealing. Six PL bands located at 415, 460, 520, 630, 760, and 845 nm, respectively, have been observed depending on the annealing temperature. The annealing at 1100 degrees C yields the strongest PL band at 760 nm (approximately 1.63 eV) with the intensity much higher than that of all the other PL bands. Based on the knowledge of the band structure, the 760 nm-PL band could be attributed to the indirect band-to-band transition of the nc-Si assisted by the Si-O vibration of the nc-Si/SiO2 interface with the stretching frequency of approximately 1083 cm(-1) (approximately 0.13 eV). On the other hand, the first four PL bands mentioned above could originate from different extended defects in the oxide matrix, while the 845-nm PL band could be related to the interface luminescent centers.
Collapse
|
50
|
Kassam Z, MacKay H, Buckley C, Brierley J, Kim J, Siu LL, Swallow C, Fung S, Oza AM, Ringash J. Final results of a phase I study of adjuvant chemoradiation for gastric adenocarcinoma with infusional 5-fluorouracil and bi-weekly cisplatin. J Clin Oncol 2008. [DOI: 10.1200/jco.2008.26.15_suppl.15671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|