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1.
J Cancer Res Ther ; 18(6): 1469-1473, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36412396

RESUMEN

Aims: The objective of this audit was to analyze the radiotherapy (RT) practice in a newly established tertiary private hospital. With increasing radiation oncology (RO) facilities in private sector, this report is the first audit from a private health organization in India. Subjects and Methods: The audit of all consecutively registered patients in RO has focused to extract data from the time of RT simulation planning till the completion of RT course. The patient and disease characteristics,RT-related treatment factors and compliance were analyzed in-depth. Results: In this newly established RO department, the vendor-supplied equipment, e.g., RT planning system, treatment delivery (linear accelerator and brachytherapy), and RO information system (ROIS), are integrated with enterprise-wide hospital information system into unified paperless workflow management for the patient care records in a prospective manner. This analysis comprised consecutive 328 patients who consented for RT simulation and planning from April 20, 2018, to December 31, 2019. RT course compliance was 94.8% (311/328 patients), and treatment intent-wise: curative plus adjuvant in 60.2% and palliative RT in 36%. RT technique was conformal in all 100%, with volumetric arc radiotherapy (VMAT) delivered to 66.6% of patients. With overall median RT course duration of 29 days (range 1-81 days), the patients were delivered a median of 20 fractions. Conclusions: Compared to the previously published audit from an academic RO department in Delhi, this audit from a private hospital has shown (i) lesser waiting time, (ii) improved treatment compliance, (iii) utilization of higher techniques, and (iv) a lower duration of RT course.


Asunto(s)
Braquiterapia , Oncología por Radiación , Humanos , Estudios Prospectivos , Hospitales Privados , India
2.
Cureus ; 14(10): e30636, 2022 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-36439589

RESUMEN

AIM:  This prospective cross-sectional study evaluated the physical, psychological, and socioeconomic impacts of post-COVID-19 conditions (PCC) in a generalized population from Odisha, India. MATERIALS AND METHODS:  The study protocol and clinical record form (CRF) were approved by the Institutional Ethics Committee. Those above 18 years and of all genders who had recovered in the last six months, whether hospitalized or not hospitalized after the COVID-19 diagnosis, were included in our study. RESULTS:  A total of 198 persons with a median age of 41 years (18-87 years) were enrolled at the post-Covid clinic. For COVID-19 management, 91 persons (46%) were hospitalized, and the remaining 107 (54%) were non-hospitalized. Five dominant clusters of physical symptoms were present - fatigue (82.8%), cough (54%), breathing difficulty (54%), pain in the body (53%), and sleeplessness (51%). The psychological issues faced were fear (41.6%), worry (40.4%), depression (31.8%), and anger (30.3%). The median monthly income in Indian Rupees (INR) for pre-Covid versus post-Covid was 30,000 versus 25,000, effectively a loss of 16.6% in the family income. Adverse impacts on health and economic conditions were observed in 31.3% and 20.7%, respectively. CONCLUSION: Post-Covid clinics can be a resource-appropriate health system approach for nearly 20% of the pandemic survivors with a low gross domestic product (GDP) per capita.

3.
Clin Transl Radiat Oncol ; 34: 75-81, 2022 May.
Artículo en Inglés | MEDLINE | ID: mdl-35356388

RESUMEN

Since the introduction of Cetuximab as a biological molecule against Epidermal Growth Factor Receptor (EGFR), its use in the cancers of head and neck region is widely explored. With the recognition that EGFR expression is associated with radioresistance and poor prognosis, incorporation of an anti-EGFR agent along with Radiotherapy (RT) is a logical and attractive option. Cetuximab in combination with RT as Bio-Radiotherapy (BRT) is considered one of the standard treatment modalities in Locally Advanced Head and Neck Squamous Cell Cancers (LA-HNSCC). Many important phase-III clinical trials were undertaken simultaneously, where the use of Cetuximab BRT was tested in various clinical scenarios with different hypothesis. With the studies still ongoing and the results awaited, its use was continued in clinical practice. Today the results are out and definitely not encouraging. After the initial success, Cetuximab has miserably failed to win over cisplatin based chemoradiation which is the current standard of care in LA-HNSCC. Hence, it is the need of the hour to re-evaluate and define the present role of Cetuximab in the definitive management of LA-HNSCC in the light of the latest clinical evidence..

4.
J Cancer Res Ther ; 17(2): 523-529, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34121702

RESUMEN

PURPOSE: We present our data for every single fraction for every patient treated at our center for the past 4 years, analyzing the waiting and treatment times. MATERIALS AND METHODS: Between January 2014 and February 2018, all patients and their corresponding recorded measurements of waiting time and machine treatment time were analyzed. Times recorded included actual arrival time, designated arrival time, linac entry time, and last beam treatment time. The complete waiting time information was divided into two categories (1) first day treatments and (2) subsequent day treatments. SPSS version 18 was used for statistical calculations, correlations, and assessing significance. RESULTS: First day treatments - of 1982 patients following treatments were carried out; 1557 volumetric-modulated arc therapy (78.6%), 88 three-dimensional conformal radiotherapy (RT) (4.4%), 14 electron (0.7%), 10 intensity-modulated RT (0.5%), 264 stereotactic irradiation (13.3%), 17 stereotactic body RT (0.7%), and 32 total body irradiation (1.6%). The mean (± standard deviation) times for early/late time, total spent time (TST), wait time gross (WTG), and wait time net (WTN) were 11.0 ± 49.6 min, 74.7 ± 44.8 min, 47.46 ± 43.9 min, and 24.1 ± 44.4 min, respectively. Subsequent day treatments - a total of 34,438 sessions of treatment delivery were recorded. Overall average WTG was 37.4 ± 32.7 min. Overall WTN was 12.1 ± 62.7 min. Overall mean total spent time (TST) was 52.4 ± 33.0 min, overall mean setup and treatment time was 15.1 ± 10.9 min. CONCLUSION: We have presented our results of patient-related times during RT. Our study covers the daily waiting times before RT as well as the actual treatment times during modern-day RT. This consecutive patient data from a large series shall be an important resource tool for future planners and policymakers.


Asunto(s)
Auditoría Médica/estadística & datos numéricos , Neoplasias/radioterapia , Oncología por Radiación/estadística & datos numéricos , Humanos , Oncología por Radiación/métodos , Radiocirugia/estadística & datos numéricos , Dosificación Radioterapéutica , Planificación de la Radioterapia Asistida por Computador/estadística & datos numéricos , Radioterapia Conformacional/estadística & datos numéricos , Radioterapia de Intensidad Modulada/estadística & datos numéricos , Factores de Tiempo
5.
J Cancer Res Ther ; 16(6): 1488-1494, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-33342818

RESUMEN

PURPOSE: T1-contrast and T2-flair images of magnetic resonance imaging (MRI) are commonly fused with computed tomography (CT) and used for delineation of postoperative residual tumor and bed after surgery in patients with glioblastoma multiforme (GBM). Our prospective study was aimed to see the feasibility of incorporating perfusion MRI in delineation of brain tumor for radiotherapy planning and its implication on treatment volumes. METHODS: Twenty-four patients with histopathologically proven GBM were included in the study. All patients underwent radiotherapy planning with a contrast CT scan. In addition to radiotherapy (RT) planning protocol, T1-perfusion MRI was also done in all patients in the same sitting. Perfusion imaging was processed on the in-house-developed JAVA-based software. The images of CT and MRI were sent to the iPlan planning system (Brainlab AG, GmbH) using a Digital Imaging and Communications in Medicine - Radiation Therapy (DICOM-RT) protocol. A structure of gross tumor volume (GTV)-perfusion (GTV-P) was delineated based only on the MRI perfusion images. Subsequently, GTV-P and GTV were fused together to make GTV-summated (GTV-S). Using existing guidelines, GTV-S was expanded to form clinical target volume-summated (CTV-S) and planning target volume-summated (PTV-S). The increment in each of the summated volumes as compared to baseline volume was noted. The common overlap volume (GTVO) between GTV and GTV-P was calculated using intersection theory (GTV n GTV-P = GTVO [Overlap]). RESULTS: Mean ± standard deviation (cc) for GTV, GTV-P, and GTVO was 46.3 ± 33.4 cc (range: 5.2 cc-108.0 cc), 26.0 ± 26.2 (range: 6.6 cc-10.3.0 cc), and 17.5 ± 22.3 cc (range: 10.0 cc-92 cc), respectively. Median volume (cc) for GTV, GTV-P, and GTVO was 40.8 cc, 17.2 cc, and 8.0 cc, respectively. Mean absolute and relative increments from GTV to that of GTV-S were 8.5 ± 8.2 cc and 27.2 ± 30.9%, respectively. Average CTV volume (cc) was 230.4 ± 115.3 (range: 80.8 cc-442.0 cc). Mean and median CTV-S volumes were 262.0 ± 126.3 cc (range: 80.8 cc-483.0 cc) and 221.0 cc, respectively. The increment in the mean CTV volume (with respect to CTV created from GTV-S) was 15.2 ± 15.9%. Mean and median PTV volumes created on the summated CTV were 287.1 ± 134.0 cc (range: 118.9 cc-576.0 cc) and 258.0 cc, respectively. Absolute and relative increments in PTV volume, while incorporating the perfusion volume, were 31.3 ± 28.9 cc and 12.5 ± 13.3%, respectively. Out of the total of 24 patients, perfusion scanning did not do any increment in GTV in five patients. CONCLUSIONS: Our study is the first to present the feasibility and the outcome of contouring on perfusion imaging and its overlay on regular MRI images. The implications of this on long-term outcome and control rates of glioblastoma patients need to be seen in future studies.


Asunto(s)
Neoplasias Encefálicas/radioterapia , Encéfalo/diagnóstico por imagen , Glioblastoma/terapia , Angiografía por Resonancia Magnética , Planificación de la Radioterapia Asistida por Computador/métodos , Adolescente , Adulto , Anciano , Encéfalo/irrigación sanguínea , Neoplasias Encefálicas/diagnóstico , Medios de Contraste/administración & dosificación , Estudios de Factibilidad , Femenino , Glioblastoma/diagnóstico , Glioblastoma/patología , Humanos , Masculino , Persona de Mediana Edad , Imagen Multimodal/métodos , Clasificación del Tumor , Procedimientos Neuroquirúrgicos , Estudios Prospectivos , Radioterapia Adyuvante/métodos , Tomografía Computarizada por Rayos X/métodos
6.
Indian J Surg Oncol ; 11(3): 401-405, 2020 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-33013118

RESUMEN

Treatment of maxillary sinus cancer poses several challenges because of its complex anatomy, close proximity to critical structures and majority of patients presenting at an advanced stage. Despite presence of several treatment approaches, the outcome in these cancers has remained dismal. This article examines its clinical behaviour and treatment outcome of these patients treated at our centre in past 7 years. In this retrospective study, 67 patients with carcinoma of maxillary sinus presented from January 2011 to December 2017 were analysed. All the patients reporting during this period were included except those who did not turn up after first visit. Of all the patients, 64.2% had squamous cell carcinoma. The majority of patients presented with advanced stage (IVA and IVB, 83.58%). Nodal disease at presentation was seen in seven patients (10.4%). Treatment to the primary site comprised of surgery and radiotherapy in 24 patients, radiotherapy alone in 22 patients and surgery alone in 12 patients. Statistical program for social sciences (SPSS) version 16 was used for all statistical analyses. The mean follow-up time was 25 months (range 3-72 months). Overall, 17 out of 41 patients who were treated with curative intent (41.5%) developed recurrence. Patients who underwent surgery followed by adjuvant radiotherapy did fairly better in terms of recurrence. Seven patients out of 17 (41.2%) could be salvaged by surgery or radiation. Only one patient developed distant metastasis to D8 vertebra. Patients who were treated with surgery and radiotherapy (either preoperative/adjuvant setting) had better disease-free survival. The results of the current study regarding the treatment of carcinoma of the maxillary sinus show feasibility and efficacy of multimodal therapy. Radical radiotherapy appears to be a feasible alternative in cases of inoperable tumours. Loco regional relapse remains a significant pattern of failure.

7.
Pract Radiat Oncol ; 10(4): e190-e191, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32151733
8.
Med Dosim ; 45(1): 1-6, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-30995966

RESUMEN

Since 2011 when it was first described, the volumetric-modulated arc therapy (VMAT) technique for craniospinal irradiation (CSI) has always seen the use of large arc lengths for the spine fields ranging from 200° to 360°. This study was aimed to do a dosimetric comparison between the large and shorter spinal arc for CSI. For a cohort of 10 patients, 2 VMAT CSI plans were created for each patient, one using the conventional full 360° arc (VMAT_FA) for the spine and the other using 100° posterior arc (VMAT_PA) for 23.4 Gy and 35 Gy prescriptions. In both the plans, 360° arc fields were employed for treating cranial volume. Spillage dose (DBody-PTV) to Body-PTV (DBody-PTV: dose to body excluding planning target volume) was compared with VMAT_FA and VMAT_PA plans. In addition to these VMAT plans, a 3-dimensional conformal radiotherapy plan was also created for all these patients to compare the DBody-PTV and target volume related dose constraints. Mean D95% difference between the two VMAT plans did not exceed 1.3% for cranial and spinal targets for both prescription levels. The conformity index (CI) was averaged over both prescription doses. Average CI shows a similar value for VMAT_FA (0.84 ± 0.04) and VMAT_PA (0.82 ± 0.05) plans. D95%, V110% and CI did not exhibit a statistically significant difference between partial and full-arc VMAT plans. However, the VMAT_PA plan exhibited a lower DBody-PTV compared to VMAT_FA plans (0.007 ≤ p < 0.05) in the 1 to 5 Gy range. Nevertheless, partial arc plans could not offer a statistically significant dose reduction for delineated organs compared to full arc plans, except for bilateral kidneys.


Asunto(s)
Neoplasias Encefálicas/radioterapia , Irradiación Craneoespinal/métodos , Meduloblastoma/radioterapia , Tumores Neuroectodérmicos Primitivos/radioterapia , Radioterapia de Intensidad Modulada/métodos , Adolescente , Adulto , Niño , Preescolar , Humanos , Dosificación Radioterapéutica , Adulto Joven
9.
Indian J Cancer ; 56(4): 359-363, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31607709

RESUMEN

The history and current status of a biomedical discipline in a country or region provide important health system indicators. During the last one hundred years, radiotherapy has established its position as a vital specialty in cancer management. It has proved to be one of the most cost effective ways of treating cancer providing both radical and palliative treatments depending on patient stage and performance status. However, access to radiotherapy for cancer patients in India is limited by several factors including physical proximity of centre, cost and availability of required technology. This article gives an outline of the history, existing radiotherapy facilities and future trends related to radiotherapy practice in India.


Asunto(s)
Neoplasias/radioterapia , Oncología por Radiación/educación , Radioterapia/historia , Braquiterapia , Análisis Costo-Beneficio , Historia del Siglo XX , Historia del Siglo XXI , Humanos , India/epidemiología , Neoplasias/economía , Neoplasias/epidemiología , Cuidados Paliativos , Radioterapia/tendencias
10.
11.
J Soc Work End Life Palliat Care ; 13(4): 215-218, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-29252155

RESUMEN

Globally there is increased presence of pets in the households. This non-human relationship, with its dimensions of physical and emotional bonds, can get severely jolted on the death of the companion animal. It sets a feeling, 'our life is now left with a void and the house feels utterly empty'. Unlike the loss of a child, spouse or parent which become a shared tragedy; others may not understand the depth of sadness and a sense of void in a grieving pet owner. Emotional pain and physical distress due to the loss of a companion animal are likely to be pronounced. A big challenge for the medical community is to anticipate, identify and address physical and psychosocial symptom burdens in a timely manner.


Asunto(s)
Aflicción , Muerte , Mascotas/psicología , Estrés Psicológico/psicología , Animales , Emociones , Pesar , Humanos
12.
Head Neck ; 39(9): 1788-1796, 2017 09.
Artículo en Inglés | MEDLINE | ID: mdl-28586138

RESUMEN

BACKGROUND: This study compared 2 sequential cohorts to identify the postoperative radiotherapy (PORT) dose requirement for head and neck squamous cell carcinoma (HNSCC). METHODS: Two distinct PORT dose regimens were prescribed over 11 years; group 1 received 56 Gy or less, and group 2 received 60 Gy or more. The 2D and 3D techniques were used. RESULTS: Two sequential cohorts consisted of 478 patients, with mean and median follow-up for group 1 and 2 as: 37.0 versus 28.5 months and 13.8 versus 13.1 months, respectively. Grades 3-4 mucosal toxicities (11.4% vs 28.3%), hospitalization (3.2% vs 17.4%), and nasogastric feeding (11.9% vs 29.7%) were higher in group 2. The 2-year disease-free survival (DFS) was higher with PORT >60 Gy for the following factors: age ≤ 50 years (P = .041); ≥ 4 positive nodes (P = .029); and overall treatment time (OTT) ≥ 100 days (P = .042). CONCLUSION: Except for the benefit of doses >60 Gy for limited parameters, a lower PORT dose did not compromise the results and can potentially reduce the morbidities and healthcare costs.


Asunto(s)
Carcinoma de Células Escamosas/mortalidad , Carcinoma de Células Escamosas/radioterapia , Neoplasias de Cabeza y Cuello/mortalidad , Neoplasias de Cabeza y Cuello/radioterapia , Adulto , Anciano , Anciano de 80 o más Años , Carcinoma de Células Escamosas/patología , Carcinoma de Células Escamosas/cirugía , Estudios de Cohortes , Terapia Combinada , Supervivencia sin Enfermedad , Relación Dosis-Respuesta en la Radiación , Femenino , Neoplasias de Cabeza y Cuello/patología , Neoplasias de Cabeza y Cuello/cirugía , Humanos , Masculino , Persona de Mediana Edad , Pronóstico , Dosificación Radioterapéutica , Radioterapia Adyuvante , Estudios Retrospectivos , Medición de Riesgo , Carcinoma de Células Escamosas de Cabeza y Cuello , Análisis de Supervivencia , Resultado del Tratamiento
13.
J Pediatr Hematol Oncol ; 39(2): e62-e68, 2017 03.
Artículo en Inglés | MEDLINE | ID: mdl-28060113

RESUMEN

The study was aimed at evaluating adherence to treatment protocol and outcome in pediatric parameningeal rhabdomyosarcoma (PM-RMS). We analyzed the characteristics, treatment administered, outcomes and patterns of failure of pediatric PM-RMS, who were treated with multimodality therapy between January 2005 and December 2013.Univariate and multivariate analysis (MVA) was completed to evaluate the impact of various prognostic factors. Thirty-seven patients were treated at our institution. Majority of them had the primary disease in paranasal sinuses (n=13). Majority of the patients belonged to group III (n=30) and stage III (n=24). The overall response rate to treatment was 52.5% (n=21). At a mean follow-up of 19.1 months, 23 patients developed disease progression. The actuarial rates of failure-free survival and overall survival (OS) at 2 years were 40% and 67.5%, respectively. Patients who received >20 weeks of intended chemotherapy schedule (P=0.02) and had complete response to first-line treatment (P=0.0004) were found to have superior failure-free survival on MVA. Complete response was the lone determinant of superior OS on MVA (P=0.006). Majority of patients with PM-RMS present with advanced stage disease. Response to first-line treatment is a significant predictor of superior progression-free survival and OS in these patients.


Asunto(s)
Neoplasias de Cabeza y Cuello/epidemiología , Cooperación del Paciente , Rabdomiosarcoma/epidemiología , Adolescente , Adulto , Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Instituciones Oncológicas/estadística & datos numéricos , Quimioradioterapia , Niño , Preescolar , Terapia Combinada , Irradiación Craneana , Ciclofosfamida/administración & dosificación , Dactinomicina/administración & dosificación , Supervivencia sin Enfermedad , Femenino , Neoplasias de Cabeza y Cuello/patología , Neoplasias de Cabeza y Cuello/cirugía , Neoplasias de Cabeza y Cuello/terapia , Humanos , India/epidemiología , Lactante , Estimación de Kaplan-Meier , Masculino , Cuidados Paliativos , Neoplasias de los Senos Paranasales/epidemiología , Neoplasias de los Senos Paranasales/patología , Neoplasias de los Senos Paranasales/cirugía , Neoplasias de los Senos Paranasales/terapia , Pronóstico , Modelos de Riesgos Proporcionales , Inducción de Remisión , Estudios Retrospectivos , Rabdomiosarcoma/patología , Rabdomiosarcoma/cirugía , Rabdomiosarcoma/terapia , Terapia Recuperativa , Centros de Atención Terciaria/estadística & datos numéricos , Resultado del Tratamiento , Vincristina/administración & dosificación , Adulto Joven
14.
Indian J Cancer ; 54(3): 519-525, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-29798950

RESUMEN

OBJECTIVES: We aimed to study the compliance and treatment outcome of patients who received adjuvant treatment following curative resection for periampullary cancers periampullary cancers. MATERIALS AND METHODS: Institute medical records of PAC treated during 2007-2014 were retrieved. Demographics, treatment, and outcome in patients who were intended to receive adjuvant chemoradiation after curative resection were analyzed. Patients received first cycle chemotherapy with 5-fluorouracil folinic acid/capecitabine, followed by external radiotherapy 45 Gy/25 fractions/5 weeks and second and third cycle concurrent chemotherapy. Fourth and fifth cycle chemotherapy were administered after radiotherapy). Various prognostic factors, disease-free survival (DFS), and overall survival (OS) were evaluated. RESULTS: Sixty-five patients were evaluated. Median age was 50 years. 96.9% patients completed the intended course of radiation and overall adherence to chemotherapy was 86.2%. Median follow-up and DFS were 20 and 29.64 months, respectively (range: 1.9-97.3 months). Estimated 1-, 2-, 5-year DFS was 77.8%, 59.3%, and 37.6%, respectively. One-year estimated OS was 92.7%. Median DFS for node-negative and node-positive patients was 88.6 and 24.33 months (P = 0.06). Grade ≥III hematological toxicity was 20%. CONCLUSION: Positive node indicated a trend toward poor survival. The study highlights high compliance to multimodal management of PAC with acceptable toxicity in and out of clinical trial setting in a tertiary cancer center in India.


Asunto(s)
Neoplasias Duodenales/cirugía , Recurrencia Local de Neoplasia/cirugía , Neoplasias del Recto/cirugía , Adulto , Anciano , Quimioterapia Adyuvante , Terapia Combinada , Supervivencia sin Enfermedad , Neoplasias Duodenales/tratamiento farmacológico , Neoplasias Duodenales/patología , Neoplasias Duodenales/radioterapia , Femenino , Humanos , India/epidemiología , Masculino , Persona de Mediana Edad , Recurrencia Local de Neoplasia/tratamiento farmacológico , Recurrencia Local de Neoplasia/patología , Recurrencia Local de Neoplasia/radioterapia , Radioterapia Adyuvante , Neoplasias del Recto/tratamiento farmacológico , Neoplasias del Recto/patología , Conductos Semicirculares/patología , Resultado del Tratamiento
15.
Natl Med J India ; 30(5): 285-286, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-29916433

RESUMEN

Since 201 4, there is a shift in terror targets, with a 1 72% increase in the deaths of common citizens. India ranks fourth in the global terrorism index. Intelligence, security and counter-terrorism conjointly form the contours of priority for governance and public engagement but the attendant aspects of health system remain neglected. Recurring acts of global terrorism have given rise to unique medical requirements that can be termed as 'terror medicine', geared towards managing health impacts of terrorism and not just a single patient. Health impacts of terrorism that affect vulnerable and non-combative citizens will need a well-developed healthcare delivery mechanism consisting of four components: medical preparedness, incident management, care of injuries and body functions, and intervention for psychological consequences. Terror medicine should not be considered a 'dangerous territory', as it can provide opportunities for healthcare to gain new strengths of knowledge and research, similar to the medical outcomes from the two world wars.


Asunto(s)
Defensa Civil , Evaluación del Impacto en la Salud , Terrorismo , Humanos , India
16.
J Cancer Res Ther ; 12(1): 131-6, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27072225

RESUMEN

PURPOSE: The use of positron emission tomography (PET) for radiotherapy planning purposes has become increasingly important in the last few years.In the current study, we compared the SUV values of images at the PET CT console to the SUV values obtained at the RT planning workstation. MATERIALS AND METHODS: The PET-CT cylindrical body phantom was filled with a uniform 18F solution of 5.3. ± 0.27 kBq/mL radioactivity concentration. PET-CT scans were performed on a16 slice Time of Flight system. On a single day, the three consecutive scans were done at three time points 15 minutes apart to generate time points image data sets titled T1, T2, and T3. SUV calculations were performed by drawing region of interest. (ROI) encompassing the entire hot spot on each slice on the PET-CT console and the iPlan workstation. Minimum SUV, Maximum SUV and the Mean SUV were recorded. Statistical analysis was done using the SPSS software. (SPSS Inc.) (Version 18). RESULTS: The absolute difference in average max SUV values i.e. Max (PET-CT) - Max (iPlan) for the time points T1, T2 and T3 were -0.168 (SD 0.175), -0.172 (SD 0.172) and -0.178 (SD 0.169). The difference in the minimum SUV values were -0.513 (SD 0.428), -0.311 (SD 0.358) and -0.303 (SD 0.322), respectively. Finally, the difference in the mean SUV values were -0.107 (SD 0.040), -0.096 (SD 0.067) and -0.072 (SD 0.044), respectively. CONCLUSIONS: Our study found out that the average difference in the two systems for maximum SUV values was < 0.2 absolute units.Our study suggests good reproducibility of SUV between the two systems. The relevance of these findings would be of seminal importance in current and future SUV-based PET-CT-based contouring in treatment planning systems.


Asunto(s)
Fluorodesoxiglucosa F18/metabolismo , Neoplasias/radioterapia , Radiofármacos/metabolismo , Planificación de la Radioterapia Asistida por Computador , Fluorodesoxiglucosa F18/uso terapéutico , Humanos , Neoplasias/diagnóstico por imagen , Neoplasias/metabolismo , Fantasmas de Imagen , Tomografía Computarizada por Tomografía de Emisión de Positrones , Dosis de Radiación , Radiofármacos/uso terapéutico
17.
Br J Radiol ; 89(1062): 20150966, 2016 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-26986459

RESUMEN

OBJECTIVE: To evaluate the feasibility and efficacy of accelerated hypofractionated radiation with concomitant chemotherapy (AHFx-RT-CT) in locally advanced squamous cell carcinoma (SCC) of the lung. METHODS: 36 patients were enrolled in this study (CTRI/2013/11/004143). Patients in Arm A (n = 18) received neoadjuvant chemotherapy (NACT) (paclitaxel 200 mg m(-2) and carboplatin area under the curve 5) followed by external radiotherapy (60 Gy/30 fractions/6 weeks). Patients in Arm B (n = 18) received NACT as in Arm A followed by AHFx-RT (48 Gy/20 fractions/4 weeks) with concomitant chemotherapy (cisplatin 30 mg m(-2) weekly). Primary end points included comparative evaluation of overall locoregional response rates (ORRs) and progression-free survival (PFS). Secondary end points included toxicity, quality of life (QOL) and overall survival (OS). RESULTS: The median follow-up duration was 15 months. The ORR at first follow-up (72.2% vs 44%, p = 0.06) and at 1 year after treatment completion (61% vs 5.5%, p = 0.04) were superior in Arm B. The median PFS (17 vs 5.36 months; p = 0.053) and OS (24.73 vs 12.33 months; p = 0.007) were also superior in Arm B. Grade ≥3 acute pharyngitis/oesophagitis was less in Arm B (p = 0.05). Improvement of emotional function, cognitive function and chest pain was observed in Arm B. CONCLUSION: The study suggests that AHFx-RT-CT is feasible for locally advanced SCC of the lung with improved response rate, survival, QOL and favourable toxicity. ADVANCES IN KNOWLEDGE: To the best of our knowledge, this is the first study comparing conventionally fractionated radiation with AHFx-RT-CT. Addition of low-dose weekly cisplatin as radiosensitizer may be the potential factor responsible for improved response rate, survival and favourable toxicity in the study arm despite lower biological effective dose.


Asunto(s)
Carcinoma de Células Escamosas/mortalidad , Carcinoma de Células Escamosas/terapia , Quimioradioterapia/mortalidad , Neoplasias Pulmonares/mortalidad , Neoplasias Pulmonares/terapia , Calidad de Vida/psicología , Adulto , Anciano , Carcinoma de Células Escamosas/psicología , Femenino , Humanos , Neoplasias Pulmonares/psicología , Masculino , Persona de Mediana Edad , Prevalencia , Hipofraccionamiento de la Dosis de Radiación , Traumatismos por Radiación/mortalidad , Factores de Riesgo , Tasa de Supervivencia , Resultado del Tratamiento
18.
Nucl Med Commun ; 37(2): 129-38, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26544097

RESUMEN

OBJECTIVE: The study assessed the role of (18)F-fluorodeoxyglucose ((18)F-FDG) Positron emission tomography (PET)/computed tomography (CT) in evaluating the prognostic value of metabolic response for progression-free survival (PFS) and overall survival (OS) in patients with locally advanced non-small-cell lung cancer (NSCLC). PATIENTS AND METHODS: Thirty patients with locally advanced NSCLC were enrolled in this prospective study and randomly allocated to one of two treatment arms. Arm A (n=15) received two cycles of neoadjuvant chemotherapy [paclitaxel (200 mg/m(2)) and carboplatin (AUC5)] and external beam radiotherapy (60 Gy/30 fractions/6 weeks). Arm B (n=15) received the same neoadjuvant chemotherapy followed by external beam radiotherapy (48 Gy/20 fractions/4 weeks) with concomitant cisplatin 30 mg/m(2) weekly. Patients underwent (18)F-FDG PET/CT at baseline and after 6 weeks of completion of intended treatment. Pretreatment and post-treatment maximum standardized uptake values (SUVmax) were noted. Patients with a reduction of SUVmax more than 50% were considered to be metabolic responders and those with a reduction 50% or less as nonresponders. Median follow-up was 18.98 months. RESULTS: Twenty-one patients completed the intended treatment. The median pretreatment and post-treatment SUVmax values were 14 and 6.4 for arm A and 15.3 and 3.5 for arm B, respectively. Significant decrease in SUVmax was observed in both arms. Metabolic response in arm A and arm B was 50 and 64%, respectively. The median PFS and OS of the responders were 22.31 and 24.73 months and those for nonresponders were 7.83 and 8.26 months, respectively. No significant difference in OS and PFS was observed between responders and nonresponders in the two arms. CONCLUSION: PET/CT distinguishes responders from nonresponders early after completion of chemoradiation in patients with locally advanced NSCLC, but did not provide any prognostic significance.


Asunto(s)
Carcinoma de Pulmón de Células no Pequeñas/diagnóstico , Carcinoma de Pulmón de Células no Pequeñas/terapia , Fluorodesoxiglucosa F18 , Neoplasias Pulmonares/diagnóstico , Neoplasias Pulmonares/terapia , Imagen Multimodal , Tomografía de Emisión de Positrones , Adulto , Anciano , Carcinoma de Pulmón de Células no Pequeñas/tratamiento farmacológico , Carcinoma de Pulmón de Células no Pequeñas/radioterapia , Femenino , Humanos , Neoplasias Pulmonares/tratamiento farmacológico , Neoplasias Pulmonares/radioterapia , Masculino , Persona de Mediana Edad , Terapia Neoadyuvante , Pronóstico , Análisis de Supervivencia , Insuficiencia del Tratamiento
20.
Laryngoscope ; 125(3): E112-7, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25345585

RESUMEN

OBJECTIVES/HYPOTHESIS: Data on the Ewing sarcoma family of tumors (ESFT) of the head and neck region with uniform chemotherapy protocols are minimal. We evaluated outcome and prognostic factors in these patients treated with a uniform chemotherapy protocol. STUDY DESIGN: Single institution observational study. METHODS: This is a single-institution review of patients treated between June 2003 and November 2011. Patients received neoadjuvant chemotherapy (NACT), surgery, and/or radiotherapy as a local treatment followed by adjuvant chemotherapy. RESULTS: Thirty-five cases of head and neck ESFT were treated with a uniform chemotherapy protocol. The median age was 12 years (range, 1-43 years); three (9%) had metastases. Nine patients underwent surgery, of which eight received adjuvant radiotherapy; 23 received definitive radiotherapy post-NACT. At a median follow-up of 58 months (range. 3.7-133.7 months), 5-year event-free survival (EFS), overall survival (OS), and local control rate were 55.1 ± 9.2%, 68.3 ± 8.3%, and 74.1 ± 8.5%, respectively. Multivariate analysis showed that baseline white blood cell (WBC) count independently prognosticated EFS (P = .04), with patients who had WBC ≤11,000/µL had superior EFS, although no difference for OS was observed. CONCLUSIONS: This is one of the largest studies of head and neck ESFT treated with a uniform chemotherapy protocol with intent-to-treat analysis. Within the limitations of the small size, baseline low WBC count appeared to have a superior outcome.


Asunto(s)
Neoplasias de Cabeza y Cuello/epidemiología , Sarcoma de Ewing/epidemiología , Adolescente , Biopsia , Niño , Preescolar , Terapia Combinada , Supervivencia sin Enfermedad , Femenino , Estudios de Seguimiento , Neoplasias de Cabeza y Cuello/diagnóstico , Neoplasias de Cabeza y Cuello/terapia , Humanos , India/epidemiología , Lactante , Imagen por Resonancia Magnética , Masculino , Pronóstico , Estudios Retrospectivos , Sarcoma de Ewing/diagnóstico , Sarcoma de Ewing/terapia , Tasa de Supervivencia/tendencias , Tomografía Computarizada por Rayos X , Resultado del Tratamiento , Adulto Joven
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