Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 22
Filtrar
1.
Radiol Med ; 129(4): 643-652, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38369638

RESUMO

BACKGROUND: Moderate hypofractionated radiotherapy is a treatment option for the cure of localized prostate cancer (PCa) patients based on the results of randomized prospective trials, but there is a clinical concern about the relatively short length of follow-up, and real-world results on outcome and toxicity based on cutting-edge techniques are lacking. The objective of this study is to present the long-term results of a large multicentric series. MATERIALS AND METHODS: We retrospectively evaluated 1325 PCa patients treated with daily volumetric image-guided hypofractionated radiotherapy between 2007 and 2020 in 16 Centers. For survival endpoints, we used Kaplan-Meier survival curves and fitted univariate and multivariable Cox's proportional hazards regression models to study the association between the clinical variables and each survival type. RESULTS: At the end of the follow-up, 11 patients died from PCa. The 15-year values of cancer-specific survival (CSS) and biochemical relapse-free survival (b-RFS) were 98.5% (95%CI 97.3-99.6%) and 85.5% (95%CI 81.9-89.4%), respectively. The multivariate analysis showed that baseline PSA, Gleason score, and the use of androgen deprivation therapy were significant variables for all the outcomes. Acute gastrointestinal (GI) and genitourinary (GU) toxicities of grade ≥ 2 were 7.0% and 16.98%, respectively. The 15-year late grade ≥ 2 GI and GU toxicities were 5% (95%CI 4-6%) and 6% (95%CI 4-8%), respectively. CONCLUSION: Real-world long-term results of this multicentric study on cutting-edge techniques for the cure of localized PCa demonstrated an excellent biochemical-free survival rate of 85.5% at 15 years, and very low rates of ≥ G3 late GU and GI toxicity (1.6% and 0.9% respectively), strengthening the results of the available published trials.


Assuntos
Neoplasias da Próstata , Radioterapia Guiada por Imagem , Radioterapia de Intensidade Modulada , Masculino , Humanos , Neoplasias da Próstata/radioterapia , Estudos Retrospectivos , Antagonistas de Androgênios , Estudos Prospectivos , Recidiva Local de Neoplasia , Radioterapia Guiada por Imagem/métodos , Radioterapia de Intensidade Modulada/métodos
2.
Healthcare (Basel) ; 10(8)2022 Aug 13.
Artigo em Inglês | MEDLINE | ID: mdl-36011190

RESUMO

BACKGROUND: We report a mono-institutional experience regarding patient-perceived quality regarding the Chieti Radiotherapy Department, through RAMSI (Radiotherapy Amica Mia-SmileINTM(SI)-My Friend RadiotherapySI) project, in critical scenarios of limited equipment and COVID-19. MATERIAL AND METHODS: Patient-reported experience measures (PREMs) were assessed as follows: Patient-centric welcome perception (PCWP), Comfort, Professional skills and Punctuality. Patients could give anonymous feedback using HappyOrNot technology through four totems located in strategic areas within the center. An internal benchmark was obtained using the feedback received after a preliminary observation period. The SI Experience Index was collected, analyzed and compared. Weekly and monthly reports were generated. RESULTS: From February 2019 to February 2022, 8924 patients accessed the department; 17,464 daily treatments were recorded and 5830 points of feedback were collected: 896, 1267, 1125 and 2542 for PCWP, Comfort, Professional skills and Punctuality, respectively. A LINAC decommissioning period was analyzed, with decreases in the SI-Index score and Smile-IN approved percentage and an improvement after this period. Additionally, the COVID-19 pandemic was analyzed with a mild evaluations decrease for PREM's Welcome, Comfort and Punctuality (Δ-value: -9%, -3% and -4%, respectively), while Professional skills were always optimal. CONCLUSION: The RAMSI project was effective for assessing treatment quality perception, allowing for improving clinical procedures with corrective actions. The RAMSI project is ongoing.

3.
In Vivo ; 36(3): 1375-1382, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35478143

RESUMO

BACKGROUND/AIM: In prostate cancer, postoperative radiotherapy timing is debated to avoid overtreatments and toxicities. This study compared acute and late rectal and bladder toxicities in the adjuvant and salvage setting. PATIENTS AND METHODS: In total, 129 patients were analyzed in two groups: adjuvant radiotherapy (aRT) and salvage radiotherapy (sRT). RESULTS: In aRT and sRT, grade 1 (G1) acute bladder toxicities were detected in 40 and 30 patients, and grade 2 (G2) in 1 and 6; G1 late bladder toxicities were described in 30 and 20, and G2 in 6 and 2, respectively. In aRT and sRT, acute G1 rectal toxicities were reported in 18 and 27 patients, and G2 in 5 and 4, respectively. Late rectal G1 toxicities were observed in 10 patients, G2 in 6 and G3 in 1 in the aRT. In sRT, 8 patients and 1 developed G1 and G2 toxicities, respectively. Regarding bladder toxicity, a higher incidence occurred in aRT; late toxicity was lower in sRT. CONCLUSION: Adjuvant and salvage RT in prostate cancer treatment resulted in acceptable toxicities.


Assuntos
Prostatectomia , Neoplasias da Próstata , Humanos , Masculino , Neoplasias da Próstata/radioterapia , Neoplasias da Próstata/cirurgia , Radioterapia Adjuvante/efeitos adversos , Terapia de Salvação/efeitos adversos , Terapia de Salvação/métodos , Bexiga Urinária
4.
Clin Exp Metastasis ; 38(6): 527-537, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34748125

RESUMO

Although systemic therapy represents the standard of care for polymetastatic kidney cancer, stereotactic body radiation therapy (SBRT) may play a relevant role in the oligometastatic setting. We conducted a multicenter study including oligometastatic kidney cancer treated with SBRT. We retrospectively analyzed 207 patients who underwent 245 SBRT treatments on 385 lesions, including 165 (42.9%) oligorecurrent (OR) and 220 (57.1%) oligoprogressive (OP) lesions. Most common sites were lung (30.9%) for OR group, and bone (32.7%) for OP group. Among 78 (31.8%) patients receiving concomitant systemic therapy, sunitinib (61.5%) and pazopanib (15.4%) were the most common for OR patients, while sunitinib (49.2%) and nivolumab (20.0%) for OP patients. End points were local control (LC), progression free survival (PFS), overall survival (OS), time to next systemic therapy (TTNS) and toxicity. Median follow-up was 18.6 months. 1, 2 and 3-year LC rates were 89.4%, 80.1% and 76.6% in OR patients, and 82.7%, 76.9% and 64.3% in those with OP, respectively. LC for OP group was influenced by clear cell histology (p = 0.000), total number of lesions (p = 0.004), systemic therapy during SBRT (p = 0.012), and SBRT dose (p = 0.012). Median PFS was 37.9 months. 1, 2- and 3-year OS was 92.7%, 86.4% and 81.8%, respectively. Median TTNS was 15.8 months for OR patients, and 13.9 months for OP patients. No grade 3 or higher toxicities were reported for both groups. SBRT may be considered an effective safe option in the multidisciplinary management of both OR and OP metastases from kidney cancer.


Assuntos
Antineoplásicos/uso terapêutico , Carcinoma de Células Renais/radioterapia , Neoplasias Renais/radioterapia , Radiocirurgia , Adulto , Idoso , Idoso de 80 Anos ou mais , Antineoplásicos/efeitos adversos , Carcinoma de Células Renais/mortalidade , Carcinoma de Células Renais/secundário , Quimioterapia Adjuvante , Progressão da Doença , Feminino , Humanos , Itália , Neoplasias Renais/mortalidade , Neoplasias Renais/patologia , Masculino , Pessoa de Meia-Idade , Intervalo Livre de Progressão , Radiocirurgia/efeitos adversos , Radiocirurgia/mortalidade , Estudos Retrospectivos , Fatores de Tempo
5.
Med Oncol ; 39(1): 3, 2021 Nov 05.
Artigo em Inglês | MEDLINE | ID: mdl-34739613

RESUMO

Although high sensitive imaging modalities such as MRI and PSMA PET/CT are becoming available for prostate cancer (PCa), the clinical benefit of an earlier detection of subclinical disease remains yet undetermined. Given these uncertainties, univocal recommendations are often lacking. The present survey was therefore developed by the Italian Association of Radiotherapy and Clinical Oncology (AIRO) to collect the opinion of expert radiation oncologists and delineate a representation of current clinical practice in our country. A nationwide cross-sectional survey was conducted in Italy by administering an anonymous questionnaire to experienced radiation oncologists, representative of the genitourinary (GU) tumor board at their Institution, using the cloud-based platform SurveyMonkey®. For each question, a consensus was achieved when ≥ 75% of the responders agreed on the same response. Thirty nine AIRO members from different Italian centers who were deemed experts in GU field accessed the proposed survey and completed all sections. Explored topics included staging of organ-confined disease, management of biochemical and local recurrence, imaging in the metastatic setting, imaging following metastasis-directed therapy (MDT), and future considerations. Response rate for single item of the questionnaire ranged between 51.2% and 100%. Expert GU AIRO members agree that advanced molecular and functional imaging are expanding their role in local and distant staging of PCa, as well as in the oncologic management and in the assessment of treatment response. However, many controversial issues still exist on the best timing for a diagnostic evaluation and the most appropriate imaging to aim at this purpose.


Assuntos
Atitude do Pessoal de Saúde , Padrões de Prática Médica/estatística & dados numéricos , Neoplasias da Próstata/diagnóstico por imagem , Radio-Oncologistas/estatística & dados numéricos , Estudos Transversais , Humanos , Itália , Imageamento por Ressonância Magnética , Masculino , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Inquéritos e Questionários
6.
Int J Clin Oncol ; 26(10): 1777-1783, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34273014

RESUMO

Historically, non-seminomatous germ cell tumor (NSGCT) has been considered a radio-resistant disease, excluding radiotherapy (RT) from curative strategies. However, case series exploring the use of radiation treatment in this setting are often outdated, and prospective ongoing studies testing new radiotherapeutic approaches in NSGCT are lacking. Considering that tremendous advances in radiotherapy technology have enabled improved precision in RT delivery as well as dose escalation while decreasing treatment-related morbidity, we overviewed the currently available literature to explore the radiobiological basis, the technical issues, and potential strategies for implementation of RT in the management of this clinical entity. The purpose of the present overview is to provide insight for future research in this unexplored scenario. In summary, the biological rationale for RT use and potential implementation with systemic therapies exist, especially considering the advantage of new technologies, which were unavailable in the era of early literature reports. The NSGCT radioresistance paradigm could be based only on the fact that effective treatment schedules were simply undeliverable with older RT techniques due to toxicity issues, but the availability of actual techniques may prompt further exploration to offer treatment alternatives to these patients. Ongoing trials on this issue are lacking, but potential areas of research are platinum-refractory disease and consolidation therapy for residual masses after PST.


Assuntos
Neoplasias Embrionárias de Células Germinativas , Radioterapia (Especialidade) , Neoplasias Testiculares , Humanos , Masculino , Neoplasias Embrionárias de Células Germinativas/radioterapia , Estudos Prospectivos , Radioterapia , Neoplasias Testiculares/radioterapia
7.
Med Oncol ; 38(2): 14, 2021 Jan 23.
Artigo em Inglês | MEDLINE | ID: mdl-33484363

RESUMO

Radiotherapy (RT) is rarely used in the palliative management of muscle-invasive bladder cancer (MIBC). This survey aims to explore current care patterns within the Italian Radiation Oncologist community on this topic. In 2020, the uro-oncological study group of the Italian Association of Radiotherapy and Clinical Oncology (AIRO) conducted a survey evaluating the RT role in advanced MIBC. An electronic questionnaire was administered online to the society members asking for: general considerations, patients' selection, and aim of the treatment, RT schedule and practical consideration, past and future perspective. Sixty-one questionnaires were returned (33% response rate). Most responders (62.30%) declared to work in a Center with a multidisciplinary uro-oncological team, and 8.20% to evaluate more than 20 patients with MIBC/year for palliative RT. Elderly patients were the most frequently evaluated (46.7%) and life expectancy was the most common selection criteria (44.60%). Thirty Gy in 10 fractions (58.9%), whole bladder as GTV (62.5%), PTV isotropic margins of 1.5-2 cm (44.6%) and IMRT/VMAT technique (58.14%) were the most common treatment choices. Patients amenable for bladder palliative RT were most commonly referred by the urologist (43.86%) or the multidisciplinary team (38%). The reported main reasons for the low involvement of radiation oncologist in the management of MIBC patients were low attention to the palliative setting in bladder cancer (37.5%); radiation oncologist not involved in the management of these patients (32.1%); cases not discussed in the multidisciplinary board (26.8%). This survey illustrated the current use of palliative RT for patients with advanced MIBC in Italy and suggested the need for a greater involvement of radiation oncologists in their management.


Assuntos
Fragilidade , Cuidados Paliativos , Neoplasias da Bexiga Urinária/radioterapia , Idoso , Idoso de 80 Anos ou mais , Humanos , Radio-Oncologistas , Radioterapia de Intensidade Modulada , Inquéritos e Questionários
8.
Radiol Med ; 126(1): 147-154, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32297096

RESUMO

PURPOSE: Due to a reported dose-response relationship in rectal cancer radiotherapy, a greater interest in dose intensification on small boost volume arises. Considering the need of an appropriate target movements evaluation, this retrospective study aimed to use cone-beam computed tomography (CBCT) for GTV and mesorectum organ motion (OM) evaluation, in locally advanced rectal cancer (LARC) patients treated with neoadjuvant chemo-radiotherapy, in prone and supine position. METHODS: Thirty-two LARC patients were analyzed. GTV and mesorectum were delineated on MRI co-registrated with CT simulation. GTV and mesorectum OM was estimated on all CBCTs, performed during treatment, co-registrated with CT simulation. OM evaluation was obtained, as mean shift in left and right (L-R), postero-anterior (P-A) and cranio-caudal (Cr-C) directions. Volumes variability was calculated by DICE index. RESULTS: A total of 296 CBCTs were analyzed. Mean shifts of the GTV and mesorectum in prone position were - 0.16 cm and 0.15 cm in L-R direction, 0.28 cm and - 0.40 cm in P-A direction, and 0.14 cm and - 0.21 cm, in Cr-C direction; for supine position the mean shifts of the GTV were - 0.10 cm and 0.17 cm in R-L direction, 0.26 cm and - 0.23 cm in A-P direction, 0.09 cm and - 0.11 cm in Cr-C direction. Mean DICE index for GTV and mesorectum was 0.74 and 0.86, in prone position, and 0.78 and 0.89 in supine position, respectively. CONCLUSION: GTV and mesorectum OM was less than 4 mm in all directions in both positions, with a 1 mm less deviation in supine position. CBCTs resulted effective for OM assessment, and it could be an appropriate method for the implementation on an intensification treatment.


Assuntos
Tomografia Computadorizada de Feixe Cônico/métodos , Movimentos dos Órgãos , Neoplasias Retais/radioterapia , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Terapia Neoadjuvante , Posicionamento do Paciente , Neoplasias Retais/diagnóstico por imagem , Estudos Retrospectivos
9.
Radiat Oncol ; 15(1): 226, 2020 Sep 29.
Artigo em Inglês | MEDLINE | ID: mdl-32993690

RESUMO

BACKGROUND: COVID-19 in Italy has led to the need to reorganize hospital protocols with a significant risk of interruption to cancer treatment programs. In this report, we will focus on a management model covering the two phases of the COVID-19 emergency, namely lockdown-phase I and post-lockdown-phase II. METHODS: The following steps were taken in the two phases: workload during visits and radiotherapy planning, use of dedicated routes, measures for triage areas, management of suspected and positive COVID-19 cases, personal protective equipment, hospital environments and intra-institutional meetings and tumor board management. Due to the guidelines set out by the Ministry of Health, oncological follow-up visits were interrupted during the lockdown-phase I; consequently, we set about contacting patients by telephone, with laboratory and instrumental exams being viewed via telematics. During the post-lockdown-phase II, the oncological follow-up clinic reopened, with two shifts operating daily. RESULTS: By comparing our radiotherapy activity from March 9 to May 4 2019 with the same period in 2020 during full phase I of the COVID-19 emergency, similar results were achieved. First radiotherapy visits, Simulation Computed Tomography and Linear Accelerator treatments amounted to 123, 137 and 151 in 2019 compared with 121, 135 and 170 in 2020 respectively. There were no cases of COVID-19 positivity recorded either in patients or in healthcare professionals, who were all negative to the swab tests performed. CONCLUSION: During both phases of the COVID-19 emergency, the planned model used in our own experience guaranteed both continuity in radiotherapy treatments whilst neither reducing workload nor interrupting treatment and, as such, it ensured the safety of cancer patients, hospital environments and staff.


Assuntos
Infecções por Coronavirus/prevenção & controle , Controle de Infecções/métodos , Neoplasias/radioterapia , Pandemias/prevenção & controle , Pneumonia Viral/prevenção & controle , Radioterapia (Especialidade)/estatística & dados numéricos , Betacoronavirus , COVID-19 , Continuidade da Assistência ao Paciente/estatística & dados numéricos , Infecções por Coronavirus/epidemiologia , Hospitais , Humanos , Itália/epidemiologia , Pneumonia Viral/epidemiologia , Radioterapia (Especialidade)/organização & administração , SARS-CoV-2 , Carga de Trabalho/estatística & dados numéricos
10.
Technol Cancer Res Treat ; 17: 1533033818779201, 2018 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-29871570

RESUMO

PURPOSE: The aim of the in vivo dosimetry, during the fractionated radiation therapy, is the verification of the correct dose delivery to patient. Nowadays, in vivo dosimetry procedures for photon beams are based on the use of the electronic portal imaging device and dedicated software to elaborate electronic portal imaging device images. METHODS: In total, 8474 in vivo dosimetry tests were carried out for 386 patients treated with 3-dimensional conformal radiotherapy, intensity-modulated radiotherapy, and volumetric modulated arc therapy techniques, using the SOFTDISO. SOFTDISO is a dedicated software that uses electronic portal imaging device images in order to (1) calculate the R index, that is, the ratio between daily reconstructed dose and the planned one at isocenter and (2) perform a γ-like analysis between the signals, S, of a reference electronic portal imaging device image and that obtained in a daily fraction. It supplies 2 indexes, the percentage γ% of points with γ < 1 and the mean γ value, γmean. In γ-like analysis, the pass criteria for the signals agreement ΔS% and distance to agreement Δd have been selected based on the clinical experience and technology used. The adopted tolerance levels for the 3 indexes were fixed in 0.95 ≤ R ≤ 1.05, γ% ≥ 90%, and γmean ≤ 0.5. RESULTS: The results of R ratio, γ-like, and a visual inspection of these data reported on a monitor screen permitted to individuate 2 classes of errors (1) class 1 that included errors due to inadequate standard quality controls and (2) class 2, due to patient morphological changes. Depending on the technique and anatomical site, a maximum of 18% of tests had at least 1 index out of tolerance; once removed the causes of class-1 errors, almost all patients (except patients with 4 lung and 2 breast cancer treated with 3-dimensional conformal radiotherapy) presented mean indexes values ([Formula: see text], [Formula: see text]%, and [Formula: see text] ) within tolerance at the end of treatment course. Class-2 errors were found in some patients. CONCLUSIONS: The in vivo dosimetry procedure with SOFTDISO resulted easily implementable, able to individuate errors with a limited workload.


Assuntos
Dosimetria in Vivo/métodos , Neoplasias/radioterapia , Planejamento da Radioterapia Assistida por Computador/métodos , Software , Estudos de Viabilidade , Humanos , Dosagem Radioterapêutica , Radioterapia Conformacional/métodos , Radioterapia de Intensidade Modulada/métodos
11.
Tumori ; 104(2): 121-127, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-29714663

RESUMO

PURPOSE: To report long-term effects on anorectal function and bowel disorders and late toxicity rate of preoperative chemoradiotherapy in patients with locally advanced rectal cancer. METHODS: Between 2000 and 2016, 201 patients treated with different neoadjuvant schedules of chemotherapy and radiotherapy doses were retrospectively analyzed. The Memorial Sloan-Kettering Cancer Center score was used for the evaluation of anal sphincter function. RESULTS: The median follow-up time was 68 months (interquartile range 35-113 months). Radical resection was performed in 188 (93.5%) patients with a pathologic complete response rate of 26.4%. Overall sphincter function resulted excellent in 105 (52.2%) patients, good in 13 (6.5%), fair in 10 (5.0%), and poor (incontinence) in 40 (19.9%), with a persistent stoma rate of 16.4%. A further evaluation on 194 patients showed an improvement of sphincter function after 2 years in 11.9% of them. Seventy-three patients presenting stoma or poor sphincter function were re-evaluated for quality of life (QoL) indexes. Twenty-one (29%), 19 (26%), and 24 (33%) of them declared some variations concerning well-being, fatigue, and ability to perform daily activities. The 5-year overall survival, disease-free survival, and local recurrence rates were 88.0% ± 2.6%, 86.3% ± 2.5%, and 94.6% ± 1.9%, respectively. CONCLUSIONS: In our study, neoadjuvant chemoradiotherapy was associated with good results in terms of sphincter function, late toxicities, and QoL indexes. A routine use of assessment scales could contribute to a better selection of patients with increased risk of developing functional disorders who could benefit from neoadjuvant therapy.


Assuntos
Neoplasias Retais/fisiopatologia , Reto/fisiopatologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Canal Anal/fisiopatologia , Quimiorradioterapia/métodos , Intervalo Livre de Doença , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Terapia Neoadjuvante/métodos , Recidiva Local de Neoplasia/fisiopatologia , Qualidade de Vida , Neoplasias Retais/terapia , Estudos Retrospectivos , Resultado do Tratamento
12.
Oncol Lett ; 15(2): 1823-1828, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-29434879

RESUMO

Increased knowledge regarding the heterogeneity of Prostate Cancer (PC) and its variable outcomes has generated controversy over the best clinical approach. Nowadays, it is well-known that patient outcomes and clinical management may be improved by an efficient organization of the national health care system. The Interdisciplinary Group for Oncological Care (GICO) for PC patients was created by our healthcare management company in September 2010. Since then, a multidisciplinary internal report was applied to PC patients. This report highlights our methodology and experience of planning a GICO, and illustrates the results obtained for the management of PC patients before and after the adopted GICO criteria in a single institution, the SS Annunziata Hospital (Chieti, Italy).

13.
Radiol Med ; 122(9): 683-689, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-28510808

RESUMO

BACKGROUNDS: Irradiation of the hippocampus plays a role in neurocognitive toxicity. Its delineation is complex and in practice different head position can vary hippocampus morphology on axial images; so atlas in a single standard position can result ineffective to describe different hippocampal morphologies in different head set-up. The purpose of our study was to develop a guide based on magnetic resonance imaging for hippocampus delineation in three different head set-ups. MATERIALS AND METHODS: Three patients were selected to elaborate our guide. Patients were submitted to a planning computed tomography of the brain district in different head positions: 1° patient in neutral, 2° patient in over-extended and 3° patient in head hypo-extended position; axial images of 2-mm thickness were obtained. Computed tomography images were fused with diagnostic brain magnetic resonance images; then hippocampus was delineated according to RTOG atlas. Contours were revised by two neuro-radiologists with >5-year expertise in neuroimaging. RESULTS: A guide was developed for each of three head positions considered. RTOG atlas provided an easy and reliable guide for hippocampus delineation in neutral position of the head. Discrepancies were observed in cranial and caudal limit in case of head over/hypo-extension, as well as in hippocampal morphology near the encephalic trunk where hippocampus takes an oblong shape in over-extended set-up, and short and stocky in hypo-extension. CONCLUSION: Our guide can represent a useful tool for hippocampal delineation in clinical practice and for different anatomic variations due to different head positions. Certainly, it should be validated in practice.


Assuntos
Neoplasias Encefálicas/diagnóstico por imagem , Neoplasias Encefálicas/radioterapia , Irradiação Craniana , Hipocampo/diagnóstico por imagem , Hipocampo/efeitos da radiação , Idoso , Pontos de Referência Anatômicos , Meios de Contraste , Feminino , Humanos , Imageamento por Ressonância Magnética , Masculino , Tratamentos com Preservação do Órgão , Compostos Organometálicos , Órgãos em Risco , Posicionamento do Paciente , Dosagem Radioterapêutica , Planejamento da Radioterapia Assistida por Computador , Tomografia Computadorizada por Raios X
14.
Rep Pract Oncol Radiother ; 20(2): 128-34, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25859401

RESUMO

AIM: Main endpoint was a response rate to therapy; secondary endpoints were disease-free survival, overall survival, acute and late toxicities, specially in terms of anorectal and urinary continence. BACKGROUND: Radiochemotherapy for anal cancer achieves a good clinical response, locoregional control, anal function preservation. However, oncologic outcomes can differ using radiotherapy plus fluorouracil and mytomicin vs. cisplatin and fluorouracil. METHODS: Between 2000 and 2012, 27 anal cancer patients receiving radiotherapy combined with two different radiochemotherapy schedules, fluorouracil and mytomicin (group A) and cisplatin plus fluorouracil (group B). The Kaplan-Meier method was also used to estimate local control, overall survival and disease free survival. Statistical significance between curves was evaluated using the Log-rank test. RESULTS: Complete pathological response was found in 85.2% of patients, with higher rates of response in the group A (100% vs. 63.6%, p = 0.039). No significantly difference was found between the two groups for the other endpoints. Low rates of both acute and late toxicities were recorded. CONCLUSION: Radiotherapy plus fluorouracil and mytomicin provide a better complete pathological response than radiotherapy plus cisplatin and fluorouracil and a greater rate of anal sphincter function preservation. Globally, radiochemotherapy of the anal cancer provides excellent clinical outcomes with a good profile of acute and late toxicity, without difference between the two groups studied.

15.
Radiol Med ; 120(4): 352-60, 2015 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-25091709

RESUMO

BACKGROUND AND PURPOSE: Sparing of the organs at risk is one of the primary end-points of radiotherapy. The effects of organ-at-risk delineation on the dosimetric parameters can be critical and can influence treatment planning and outcomes. The aim of our study was to provide anatomical boundaries for the identification and delineation of the following critical organs at risk in the head and neck district: brachial plexus, cochlea, pharyngeal constrictor muscles and optic chiasm. PATIENTS AND METHODS: One patient was initially selected to elaborate our atlas. This patient was subjected to a planning computed tomography of the brain and head and neck district; axial images of 3-mm thickness at 3-mm intervals were obtained. In the same set-up a magnetic resonance imaging study was also performed. The obtained images were fused based on anatomical landmarks and used by a radiation oncologist, supported by a neuroradiologist, to provide anatomo-radiological limits for the identification of the brachial plexus, cochlea, pharyngeal constrictor muscles and optic chiasm. These limits were further verified on three consecutive patients. RESULTS: A computed tomography-based atlas was developed with definition of cranial, caudal, medial, lateral, anterior and posterior limits for each organ considered. CONCLUSIONS: This study allows improvement of definitions of anatomic boundaries for the brachial plexus, cochlea, pharyngeal constrictor muscles and optic chiasm. Our multidisciplinary experience led to the production of an institutional reference tool that could represent a useful aid for radiation oncologists in clinical practice.


Assuntos
Plexo Braquial/diagnóstico por imagem , Cóclea/diagnóstico por imagem , Neoplasias de Cabeça e Pescoço/diagnóstico por imagem , Neoplasias de Cabeça e Pescoço/radioterapia , Quiasma Óptico/diagnóstico por imagem , Músculos Faríngeos/diagnóstico por imagem , Tomografia Computadorizada por Raios X/métodos , Atlas como Assunto , Plexo Braquial/efeitos da radiação , Cóclea/efeitos da radiação , Humanos , Imageamento Tridimensional , Imageamento por Ressonância Magnética , Quiasma Óptico/efeitos da radiação , Músculos Faríngeos/efeitos da radiação , Reprodutibilidade dos Testes
16.
Radiol Med ; 120(3): 324-8, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-25033946

RESUMO

PURPOSE: Whole-brain radiotherapy is performed as standard therapy in patients with multiple brain metastases and in patients with more favourable prognosis such as lymphoma and small-cell lung carcinoma in the prophylactic setting. Because of the prognosis and the total prescribed dose, the parotid glands are not usually regarded as an organ at risk in whole-brain radiotherapy. Long-term survival can be expected in some of these patients and late toxicity can be observed, becoming essential to evaluate organs at risk, particularly the parotid glands even in metastatic patients. We compared the 2D with 3D technique to evaluate parotid glands involvement and received dose, and coverage of the clinical target volume. MATERIALS AND METHODS: Seven patients were considered. The prescribed dose was 30 Gy in ten fractions. On the same day and with the same set-up, all the treatment planning were performed using a 2D and 3D technique. A treatment plan was performed following same technical characteristics as the 2D technique. The parotid glands and whole brain were delineated. Dose-volume statistics were analysed. RESULTS: Dose-volume histograms of the parotid glands showed that 2/7 patients (28 %) received a mean dose >20 Gy. We found a lack of coverage of the clinical target volume in 6/7 patients. CONCLUSIONS: Planning whole-brain radiotherapy with only the 2D technique involves a risk of including parotid glands in the field and not covering the clinical target volume. The 3D technique should be systematically performed and the parotid glands should be regarded as an organ at risk in whole-brain radiotherapy.


Assuntos
Neoplasias Encefálicas/radioterapia , Imageamento Tridimensional , Glândula Parótida/efeitos da radiação , Lesões por Radiação/prevenção & controle , Planejamento da Radioterapia Assistida por Computador/métodos , Radioterapia Conformacional/métodos , Neoplasias Encefálicas/secundário , Irradiação Craniana/efeitos adversos , Humanos , Dosagem Radioterapêutica , Reprodutibilidade dos Testes , Tomografia Computadorizada por Raios X
17.
Anticancer Res ; 33(10): 4557-66, 2013 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24123031

RESUMO

AIM: To evaluate survival outcomes of patients in pStage II-III rectal cancer treated with adjuvant 5-fluorouracil-based radiochemotherapy and to retrospectively analyze the impact of prognostic variables on local control, metastasis-free survival and cause-specific survival. PATIENTS AND METHODS: A total of 1,338 patients, treated between 1985-2005 for locally advanced rectal cancer, who underwent surgery and postoperative 5-fluorouracil-based chemoradiation, were selected. RESULTS: The actuarial 5- and 10-year outcomes were: local control 87.0%-84.1%, disease-free survival 61.6%-52.1%, metastasis-free survival 72.0%-67.2%, cause-specific survival 70.4%-57.5%, and overall survival 63.8%-53.4%. Better outcomes were observed in patients with IIA, IIIA stage. Multivariate analyses showed that variables significantly affecting metastasis-free survival were pT4 and pN2, while for cancer-specific survival those variables were age >65 years, pT4, pN1, pN2, distal tumors and number of lymph nodes removed ≤ 12. CONCLUSION: This study confirmed that among stage II-III rectal cancer patients there are subgroups of patients with different clinical outcomes.


Assuntos
Antimetabólitos Antineoplásicos/uso terapêutico , Fluoruracila/uso terapêutico , Neoplasias Retais/terapia , Quimiorradioterapia , Intervalo Livre de Doença , Humanos , Estimativa de Kaplan-Meier , Metástase Linfática , Período Pós-Operatório , Prognóstico , Neoplasias Retais/mortalidade , Neoplasias Retais/patologia , Estudos Retrospectivos , Resultado do Tratamento
18.
Tumori ; 98(5): 622-9, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-23235758

RESUMO

AIMS AND BACKGROUND: Rectal cancer is a common disease of elderly people. However, patients over 70 years of age are often not included in clinical trials. There is a lack of data concerning the use of radiochemotherapy with capecitabine in elderly patients. The aim of this study was to retrospectively evaluate the impact of preoperative radiochemotherapy with capecitabine on downstaging and sphincter preservation and to assess treatment compliance and toxicity in elderly patients. METHODS: Twenty-six patients with resectable locally advanced rectal cancer (stage II-III/TNM) aged >70 years received preoperative radiotherapy and concurrent oral capecitabine 825 mg/m² twice daily during the whole period of radiotherapy. Two patients who refused surgery after chemoradiation therapy were excluded from the analysis. Results. Eighty-one percent of patients underwent anterior resection and 18.1% underwent abdominoperineal resection. Overall tumor downstaging, considering both T and N categories, was observed in 18/24 patients (75%). Treatment compliance was good and toxicity rates were similar to those of younger people. CONCLUSIONS: Age is not a contraindication to any therapy and elderly patients who can tolerate radiochemotherapy should be treated like younger patients. Preoperative radiochemotherapy with capecitabine for patients aged >70 years has a good impact on tumor downstaging, increases the feasibility of sphincter-preserving surgery, and is also safe and well tolerated.


Assuntos
Antimetabólitos Antineoplásicos/uso terapêutico , Desoxicitidina/análogos & derivados , Fluoruracila/análogos & derivados , Terapia Neoadjuvante/métodos , Neoplasias Retais/patologia , Neoplasias Retais/terapia , Idoso , Idoso de 80 Anos ou mais , Canal Anal/cirurgia , Antimetabólitos Antineoplásicos/administração & dosagem , Capecitabina , Quimiorradioterapia/efeitos adversos , Desoxicitidina/administração & dosagem , Desoxicitidina/uso terapêutico , Feminino , Fluoruracila/administração & dosagem , Fluoruracila/uso terapêutico , Humanos , Masculino , Estadiamento de Neoplasias , Neoplasias Retais/tratamento farmacológico , Neoplasias Retais/radioterapia , Neoplasias Retais/cirurgia , Estudos Retrospectivos , Resultado do Tratamento
19.
Transl Med UniSa ; 3: 62-6, 2012 May.
Artigo em Inglês | MEDLINE | ID: mdl-23905054

RESUMO

Pain is one of the most common and often most feared symptoms in patients with cancer. Ongoing or progressive pain is physically debilitating and has a marked impact on quality of life. During their illness, at least 70% of patients will experience pain sufficiently severe to require chronic opioid treatment. Moreover, Breakthrough Pain (BTP) consists in transitory exacerbations of pain that occurs on a background of otherwise stable pain in a patient receiving chronic opioid therapy. An inadequate baseline therapy with opioids can be one of the causes of BTP. We will examine the molecular issues that influence the response of patients to opioids. Finally, we will discuss about the importance of individualizing therapy.

20.
Strahlenther Onkol ; 187(12): 778-83, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-22127356

RESUMO

BACKGROUND AND PURPOSE: To evaluate the influence of serum hemoglobin level prior to radiotherapy and other prognostic factors on survival in patients with high-grade gliomas. MATERIAL AND METHODS: From 2001-2010, we retrospectively evaluated a total of 48 patients with malignant glioma treated with surgery and postoperative radiochemotherapy with temozolomide. A total of 37 of 48 patients received sequential temozolomide. Hemoglobin levels were assayed before radiotherapy in all patients. The Kaplan-Meier method was applied to estimate the overall survival, while the log-rank test was applied to evaluate the differences on survival probability between prognostic subgroups. RESULTS: Results were assessed in 43 patients. The median overall survival time was 18 months (95% confidence interval: 12-40 months). The 1- and 2-year survival rates were 62.2% and 36.3%, respectively. The prognostic factors analyzed were gender, age, extent of surgery, performance status before and after radiotherapy, sequential chemotherapy, hemoglobin level, and methylation of the O-6-methylguanine-DNA methyltransferase gene (MGMT). In univariate analysis, the variables significantly related to survival were performance status before and after radiotherapy, sequential chemotherapy, and hemoglobin level. The median overall survival in patients with a hemoglobin level ≤ 12 g/dl was 12 months and 23 months in patients with a hemoglobin level > 12 g/dl. The 1- and 2-year survival rates were 46.7% and 20.0%, respectively, for patients with a hemoglobin level ≤ 12 mg/dl and 69.6% and 45.7%, respectively, for patients with a hemoglobin level > 12 g/dl. CONCLUSION: Our results confirm the impact of well-known prognostic factors on survival. In this research, it was found that a low hemoglobin level before radiotherapy can adversely influence the prognosis of patients with malignant gliomas.


Assuntos
Antineoplásicos Alquilantes/uso terapêutico , Astrocitoma/tratamento farmacológico , Astrocitoma/radioterapia , Neoplasias Encefálicas/tratamento farmacológico , Neoplasias Encefálicas/radioterapia , Dacarbazina/análogos & derivados , Glioblastoma/tratamento farmacológico , Glioblastoma/radioterapia , Hemoglobinometria , Adulto , Idoso , Astrocitoma/mortalidade , Astrocitoma/cirurgia , Neoplasias Encefálicas/sangue , Neoplasias Encefálicas/mortalidade , Neoplasias Encefálicas/cirurgia , Quimiorradioterapia Adjuvante , Terapia Combinada , Irradiação Craniana , Metilação de DNA , Metilases de Modificação do DNA/metabolismo , Enzimas Reparadoras do DNA/metabolismo , Dacarbazina/uso terapêutico , Feminino , Glioblastoma/mortalidade , Glioblastoma/cirurgia , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Prognóstico , Temozolomida , Proteínas Supressoras de Tumor/metabolismo
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...