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1.
Int J Cancer ; 154(8): 1335-1339, 2024 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-37962056

RESUMEN

The incidence of cancer in general, including breast and prostate cancer specifically, is increasing in India. Breast and prostate cancers have genomic classifiers developed to guide therapy decisions. However, these genomic classifiers are often inaccessible in India due to high cost. These classifiers may also be less suitable to the Indian population, as data primarily from patients in wealthy Western countries were used in developing these genomic classifiers. In addition to the limitations in using these existing genomic classifiers, developing and validating new genomic classifiers for breast and prostate cancer in India is challenging due to the heterogeneity in the Indian population. However, there are steps that can be taken to address the various barriers that currently exist for accurate, accessible genomic classifiers for cancer in India.


Asunto(s)
Neoplasias de la Mama , Neoplasias de la Próstata , Masculino , Humanos , Neoplasias de la Mama/genética , Neoplasias de la Mama/epidemiología , Neoplasias de la Próstata/genética , Neoplasias de la Próstata/epidemiología , Genómica , India/epidemiología , Incidencia
2.
Prostate ; 82(11): 1098-1106, 2022 08.
Artículo en Inglés | MEDLINE | ID: mdl-35652585

RESUMEN

BACKGROUND: Whole pelvic radiation therapy (WPRT) may improve outcomes compared with prostate only radiation therapy (PORT) in some subsets of men with prostate cancer, as in the POP-RT trial. However, there is concern about increased risk of adverse effects with WPRT, including the development of radiation-induced second malignancies (SM). Given the rarity of SM, little is known about relative rates of SM between WPRT and PORT. METHODS: A retrospective cohort analysis was performed of men with nonmetastatic, node-negative prostate cancer with at least 60 months of follow-up using a national database. SM probabilities were compared in men receiving either WPRT or PORT using multivariable logistic models adjusting for clinical and sociodemographic factors. Temporal sensitivity analyses stratified by year of diagnosis and length of follow-up were also conducted. RESULTS: Of 50,237 patients in the study, 39,338 (78.4%) received PORT, and 10,899 (21.7%) received WPRT. Median follow-up was 106.2 months (interquartile range 82.32-132.25). Crude probabilities of SM were 9.16% for WPRT and 8.88% for PORT. The adjusted odds ratio (AOR) for development of SM with PORT versus WPRT was 1.046 (95% confidence interval 0.968-1.130). Temporal sensitivity analyses by stratifying by year of diagnosis and follow-up length also did not demonstrate any significant difference in rates of SM between WPRT and PORT using AORs with WPRT as the referent. CONCLUSIONS: Retrospective analysis of over 50,000 patients did not demonstrate an association between WPRT and an increased probability of SM compared to PORT. Given the findings of POP-RT, the use of WPRT may become widespread for certain subsets of men. Thus, our findings could help guide how we counsel patients deciding between WPRT and PORT and suggest the need for prospective assessment of SM risk with WPRT and PORT.


Asunto(s)
Neoplasias Primarias Secundarias , Neoplasias de la Próstata , Antagonistas de Andrógenos/uso terapéutico , Humanos , Masculino , Neoplasias Primarias Secundarias/tratamiento farmacológico , Neoplasias Primarias Secundarias/epidemiología , Neoplasias Primarias Secundarias/etiología , Pelvis/patología , Probabilidad , Estudios Prospectivos , Próstata/patología , Antígeno Prostático Específico , Neoplasias de la Próstata/patología , Estudios Retrospectivos
3.
Immunol Cell Biol ; 100(1): 61-73, 2022 01.
Artículo en Inglés | MEDLINE | ID: mdl-34582592

RESUMEN

Recent studies have highlighted multiple immune perturbations related to severe acute respiratory syndrome coronavirus 2 infection-associated respiratory disease [coronavirus disease 2019 (COVID-19)]. Some of them were associated with immunopathogenesis of severe COVID-19. However, reports on immunological indicators of severe COVID-19 in the early phase of infection in patients with comorbidities such as cancer are scarce. We prospectively studied about 200 immune response parameters, including a comprehensive immune-cell profile, inflammatory cytokines and other parameters, in 95 patients with COVID-19 (37 cancer patients without active disease and intensive chemo/immunotherapy, 58 patients without cancer) and 21 healthy donors. Of 95 patients, 41 had severe disease, and the remaining 54 were categorized as having a nonsevere disease. We evaluated the association of immune response parameters with severe COVID-19. By principal component analysis, three immune signatures defining characteristic immune responses in COVID-19 patients were found. Immune cell perturbations, in particular, decreased levels of circulating dendritic cells (DCs) along with reduced levels of CD4 T-cell subsets such as regulatory T cells (Tregs ), type 1 T helper (Th1) and Th9; additionally, relative expansion of effector natural killer (NK) cells were significantly associated with severe COVID-19. Compared with patients without cancer, the levels of terminal effector CD4 T cells, Tregs , Th9, effector NK cells, B cells, intermediate-type monocytes and myeloid DCs were significantly lower in cancer patients with mild and severe COVID-19. We concluded that severely depleted circulating myeloid DCs and helper T subsets in the initial phase of infection were strongly associated with severe COVID-19 independent of age, type of comorbidity and other parameters. Thus, our study describes the early immune response associated with severe COVID-19 in cancer patients without intensive chemo/immunotherapy.


Asunto(s)
COVID-19 , Neoplasias , Humanos , Inmunidad , Neoplasias/terapia , SARS-CoV-2 , Subgrupos de Linfocitos T
4.
Histopathology ; 80(3): 566-574, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-34586682

RESUMEN

AIMS: The recent changes in the American Joint Commission on Cancer, 8th edition (AJCC-8E) pT2 and pT3 tumour definitions for penile cancer need robust validation studies. A recent study redefined and modified the pT2 and pT3 stages incorporating the histopathological variables (tumour grade, lymphovascular invasion, perineural invasion) similar to that used in the current AJCC-8E pT1 stage tumour subclassification. In this study, we validate and compare this proposed staging with the AJCC staging systems on an external data set. METHODS AND RESULTS: The data set from a previously published study was obtained. pT2 and pT3 stages were reconstructed as per AJCC 7th edition (AJCC-7E), AJCC-8E and the proposed staging. The staging systems were correlated with nodal metastasis, disease-free survival (DFS), cancer-specific survival (CSS) and overall survival (OS). All systems were compared using receiver operating characteristic (ROC) curves. A total of 281 cases formed the study cohort. AJCC-8E (P = 0.031) and the proposed staging (P = 0.003) correlated with nodal metastasis on adjusted analysis, the latter with a better strength of association (AJCC-8E, γ = -0.471; proposed, γ = -0.625). On adjusted analysis, all the staging systems had a significant correlation with DFS, while only AJCC-8E and the proposed staging correlated with CSS and OS. On ROC curve analysis, the proposed staging had the highest area under the curve and was the only staging system to statistically correlate with all the outcome variables. CONCLUSIONS: The proposed staging for pT2/pT3 tumour stages in penile cancer may improve the prognostic and predictive ability.


Asunto(s)
Carcinoma de Células Escamosas/patología , Estadificación de Neoplasias , Neoplasias del Pene/patología , Guías de Práctica Clínica como Asunto/normas , Pronóstico , Análisis de Supervivencia , Anciano , Conjuntos de Datos como Asunto , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Estados Unidos
5.
Q J Nucl Med Mol Imaging ; 66(2): 162-170, 2022 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-31496204

RESUMEN

BACKGROUND: Functional imaging such as 18F-fluoro-deoxy-glucose positron emission tomography/computed tomography (FDG-PET/CT), 18F-fluoro-misonidazole (F-MISO)-PET/CT, and diffusion-weighted magnetic resonance imaging (DW-MRI) can assess complex biological phenomena in tumors reflecting underlying disease biology. The aim of this prospective observational study was to correlate quantitative imaging parameters derived from pretreatment biological imaging such as FDG-PET/CT, F-MISO-PET/CT, and DW-MRI with each other and with clinical outcomes in patients with head and neck squamous cell carcinoma (HNSCC) treated with definitive radio(chemo)therapy. METHODS: Twenty patients with pharyngo-laryngeal cancers underwent pretreatment biological imaging. Gross tumor volume (GTV) was delineated on axial planning CT (GTVCT). Quantitative FDG-PET/CT parameters included maximum, mean, minimum standardized uptake values (SUVmax-FDG, SUVmean-FDG, SUVmin-FDG); metabolic tumor volume (MTV); and total lesion glycolysis (TLG). F-MISO-PET/CT parameters included hypoxic tumor volume (HTV); maximum, mean, minimum SUV; and fractional hypoxic volume (FHV). Mean apparent diffusion coefficient (ADCmean) was derived from DW-MRI. RESULTS: There was moderately strong positive correlation (r=0.616, P=0.005) between GTVCT and MTV. HTV derived from F-MISO-PET/CT at 3-hours (HTV3hrs-F-MISO) showed strong positive correlation with GTVCT (r=0.753, P<0.0001) and MTV (r=0.796, P<0.0001) respectively. ADCmean showed strong positive correlations with SUVmean-5hrs-F-MISO (r=0.713, P=0.021) and SUVmin-5hrs-F-MISO (r=0.731, P=0.016) respectively. A moderate negative correlation (r=-0.500, P=0.049) was observed between ADCmean and MTV. At a median follow up of 44 months, the 5-year Kaplan-Meier estimates of loco-regional control, disease-free survival, and overall survival were 53%, 43%, and 40% respectively. Larger volume of primary tumor (GTVCT>22cc and MTV>7.9cc) and increasing hypoxia (HTV3hr-F-MSO>4.9cc) were associated with worse outcomes. CONCLUSIONS: Functional imaging represents an attractive and non-invasive modality to assess complex biological phenomena in solid tumors. Larger tumor volume and increasing hypoxia emerged as putative prognostic imaging biomarkers in HNSCC.


Asunto(s)
Neoplasias de Cabeza y Cuello , Tomografía Computarizada por Tomografía de Emisión de Positrones , Imagen de Difusión por Resonancia Magnética , Fluorodesoxiglucosa F18/metabolismo , Neoplasias de Cabeza y Cuello/diagnóstico por imagen , Neoplasias de Cabeza y Cuello/terapia , Humanos , Hipoxia , Tomografía Computarizada por Tomografía de Emisión de Positrones/métodos , Tomografía de Emisión de Positrones , Radiofármacos , Carcinoma de Células Escamosas de Cabeza y Cuello/diagnóstico por imagen , Carcinoma de Células Escamosas de Cabeza y Cuello/terapia , Carga Tumoral
6.
Int J Clin Pract ; 2022: 2449068, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35685574

RESUMEN

Background: This manuscript describes the genetic features of SARS-CoV-2 mutations, prevalent phylogenetic lineages, and the disease severity amongst COVID-19-vaccinated individuals in a tertiary cancer hospital during the second wave of the pandemic in Mumbai, India. Methods: This observational study included 159 COVID-19 patients during the second wave of the pandemic from 17th March to 1st June 2021 at a tertiary cancer care centre in Mumbai. The cohort comprised of healthcare workers, staff relatives, cancer patients, and patient relatives. For comparison, 700 SARS-CoV-2 genomes sequenced during the first wave (23rd April to 25th September 2020) at the same centre were also analysed. Patients were assigned to nonvaccinated (no vaccination or <14 days from the 1st dose, n = 92), dose 1(≥14 days from the 1st dose to <14 days from the 2nd dose, n = 29), and dose 2 (≥14 days from the 2nd dose, n = 38) groups. Primary measure was the prevalence of SARS-CoV-2 genomic lineages among different groups. In addition, severity of COVID-19 was assessed according to clinical and genomic variables. Results: Kappa B.1.1671.1 and delta B.1.617.2 variants contributed to an overwhelming majority of sequenced genomes (unvaccinated: 40/92, 43.5% kappa, 46/92, 50% delta; dose 1: 14/29, 48.3% kappa, 15/29, 51.7% delta; and dose 2: 23/38, 60.5% kappa, 14/38 36.8% delta). The proportion of the kappa and delta variants did not differ significantly across the unvaccinated, dose 1, and dose 2 groups (p = 0.27). There was no occurrence of severe COVID-19 in the dose 2 group (0/38, 0% vs. 14/121, 11.6%; p = 0.02). SARS-CoV-2 genomes from all three severe COVID-19 patients in the vaccinated group belonged to the delta lineage (3/28, 10.7% vs. 0/39, 0.0%, p = 0.04). Conclusions: Sequencing analysis of SARS-COV-2 genomes from Mumbai during the second wave of COVID-19 suggests the prevalence of the kappa B.1.617.1 and the delta B.1.627.2 variants among both vaccinated and unvaccinated individuals. Continued evaluation of genomic sequencing data from breakthrough COVID-19 is necessary for monitoring the properties of evolving variants of concern and formulating appropriate immune response boosting and therapeutic strategies.


Asunto(s)
COVID-19 , SARS-CoV-2 , COVID-19/epidemiología , COVID-19/prevención & control , ChAdOx1 nCoV-19 , Genómica , Humanos , Filogenia , SARS-CoV-2/genética
7.
J Surg Oncol ; 123(4): 1157-1163, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33428791

RESUMEN

OBJECTIVE: To assess the response of chemotherapy on the primary tumor, compare it with the response in retroperitoneal disease, and study factors associated with pathological complete response. METHODS: We conducted a retrospective audit of all high inguinal orchidectomies (HIOs) performed after chemotherapy between 2012 and 2019 at a tertiary cancer center in India. Patient characteristics and histopathological response were extracted from electronic medical records, and predictors of testicular disease response were assessed. RESULTS: Of the 260 retroperitoneal lymph node dissections (RPLNDs) performed in the study period, 37 HIOs (14.23%) were carried out after chemotherapy. The median age of presentation was 28 years (16-41). Histopathology was divided into a viable tumor, mature teratoma, and necrosis/scarring. Residual disease was seen in 17 RPLND (46.0%) and 18 HIO (48.6%) specimens respectively. Of these 18, three patients had a residual viable tumor in the testis, and the remaining had a mature teratoma. Clinico-radiological assessment showed an average reduction of 61% in testicular disease size following chemotherapy. On orchidectomy histopathological assessment, the median tumor size was 9, 4, and 1.5 cm in specimens with a viable tumor, mature teratoma, and necrosis/scarring, respectively. CONCLUSIONS: A low threshold for upfront chemotherapy in patients with a high disease burden may be considered as tumors within the testis respond to chemotherapy in more than half of the patients. Discordance rates of residual cancer in RPLND and HIO specimens exist but post-chemotherapy tumor size in testis correlates with the presence of a residual viable tumor.


Asunto(s)
Barrera Hematotesticular/metabolismo , Escisión del Ganglio Linfático/métodos , Ganglios Linfáticos/cirugía , Neoplasia Residual/patología , Neoplasias de Células Germinales y Embrionarias/patología , Orquiectomía/métodos , Neoplasias Retroperitoneales/patología , Adolescente , Adulto , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Barrera Hematotesticular/efectos de los fármacos , Terapia Combinada , Femenino , Estudios de Seguimiento , Humanos , Ganglios Linfáticos/patología , Masculino , Persona de Mediana Edad , Neoplasia Residual/tratamiento farmacológico , Neoplasia Residual/cirugía , Neoplasias de Células Germinales y Embrionarias/tratamiento farmacológico , Neoplasias de Células Germinales y Embrionarias/cirugía , Pronóstico , Estudios Prospectivos , Neoplasias Retroperitoneales/tratamiento farmacológico , Neoplasias Retroperitoneales/cirugía , Estudios Retrospectivos , Adulto Joven
8.
Int J Clin Pract ; 75(8): e14311, 2021 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-33932309

RESUMEN

It is unclear if the use of a molecular transport medium (MTM) containing guanidine isothiocyanate (GITC) would be advantageous over the CDC recommended, commonly used viral transport medium (VTM). We retested 70 SARS-CoV2 cases by RT-PCR in varying stages of follow-up using MTM and VTM in parallel and found discrepant results of RNase P, E and N genes. Majority (81%) patients tested positive with MTM as compared with VTM (27.1%). Even patients who were sampled 3 weeks after diagnosis demonstrated a significant discrepancy in the positivity rates between MTM vs VTM raising concerns about the clinical utility of VTM.


Asunto(s)
COVID-19 , SARS-CoV-2 , Prueba de COVID-19 , Técnicas de Laboratorio Clínico , Humanos , ARN Viral
9.
Eur Arch Otorhinolaryngol ; 278(11): 4423-4431, 2021 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-33564909

RESUMEN

PURPOSE: To analyze the outcome of locally advanced unresectable adenoid cystic carcinoma (ACC) of head and neck treated with radical concurrent chemoradiotherapy (CRT) at a single tertiary care centre. METHODS: Between 2011 and 2018, 23 patients with locally advanced unresectable ACC of head and neck treated with non-surgical radical treatment with concurrent chemoradiotherapy were evaluated for outcome and toxicity. All but one patient received cisplatin-based concurrent chemotherapy and 74% of patients were treated with intensity-modulated radiotherapy. RESULTS: Median follow-up was 53 months (range 3-115 months). Following treatment, 11 patients achieved complete response (47.8%) and of the 12 patients with residual disease, 7 patients additionally had disease stabilization without local progression. Overall 15 patients had disease progression. Median time to progression was 28 months (range 6-67 months). The 3-year and 5-year overall survival, local progression-free survival (LPFS) and distant progression-free survival (DPFS) were 78%, 79.7%, 67.4% and 63%, 50.9%, 48.6%, respectively. Acute grade 3 mucositis was observed in three patients, and one patient additionally developed grade 4 neutropenia with subsequent complete recovery. No grade 3 or higher late toxicity was observed. CONCLUSION: Radical concurrent chemoradiotherapy is a promising treatment option in locally advanced unresectable ACC with acceptable toxicity.


Asunto(s)
Carcinoma Adenoide Quístico , Neoplasias de Cabeza y Cuello , Neutropenia , Carcinoma Adenoide Quístico/terapia , Quimioradioterapia , Cisplatino , Neoplasias de Cabeza y Cuello/terapia , Humanos
11.
J Surg Oncol ; 122(7): 1288-1292, 2020 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-32841386

RESUMEN

BACKGROUND: Severe acute respiratory syndrome coronavirus 2 has caused substantial disruptions in routine clinical care. Emerging data show that surgery in coronavirus disease (COVID)-positive cases can be associated with worsening of clinical outcomes and increased postoperative mortality. Hence, preoperative COVID-19 testing for all patients before elective surgery was implemented in our institution. MATERIALS AND METHODS: Two hundred and sixty-two asymptomatic cancer patients were preoperatively tested for COVID-19 using reverse-transcription polymerase chain reaction technique with nasopharyngeal and oropharyngeal swabbing. All negative patients were operated within 72 hours, and positive patients were quarantined for a minimum 14 days before re-swabbing. RESULTS: In our cohort, 21 of 262 (8.0%) asymptomatic preoperative patients, who were otherwise fit for surgery, tested positive. After adequate quarantine and a negative follow-up test report, 12 of 21 (57%) had an operation. No major postoperative morbidity due to COVID-19 was noted during the immediate postoperative period before discharge from the hospital. CONCLUSION: Routine preoperative COVID-19 testing was successful in identifying asymptomatic viral carriers. There was no incidence of symptomatic COVID-19 disease in the postoperative period, and there was no incidence of morbidity attributable to COVID-19. These data suggested a beneficial role for mandatory preoperative COVID-19 testing.


Asunto(s)
Prueba de COVID-19/métodos , COVID-19/diagnóstico , Exámenes Obligatorios/métodos , Neoplasias/cirugía , Neoplasias/virología , COVID-19/epidemiología , COVID-19/virología , Procedimientos Quirúrgicos Electivos , Femenino , Humanos , India/epidemiología , Masculino , Persona de Mediana Edad , Neoplasias/epidemiología , Pandemias , Cuidados Preoperatorios/métodos , Salud Pública
12.
Cancer ; 125(18): 3184-3197, 2019 09 15.
Artículo en Inglés | MEDLINE | ID: mdl-31150120

RESUMEN

BACKGROUND: Because the addition of nimotuzumab to chemoradiation in patients with locally advanced head and neck cancer improved outcomes in a phase 2 study, the authors conducted a phase 3 study to confirm these findings. METHODS: This open-label, investigator-initiated, phase 3, randomized trial was conducted from 2012 to 2018. Adult patients with locally advanced head and neck cancer who were fit for radical chemoradiation were randomized 1:1 to receive either radical radiotherapy (66-70 grays) with concurrent weekly cisplatin (30 mg/m2 ) (CRT) or the same schedule of CRT with weekly nimotuzumab (200 mg) (NCRT).The primary endpoint was progression-free survival (PFS); key secondary endpoints were disease-free survival (DFS), duration of locoregional control (LRC), and overall survival (OS). An intent-to-treat analysis also was performed. RESULTS: In total, 536 patients were allocated equally to both treatment arms. The median follow-up was 39.13 months. The addition of nimotuzumab improved PFS (hazard ratio [HR], 0.69; 95% CI, 0.53-0.89; P = .004), LRC (HR, 0.67; 95% CI, 0.50-0.89; P = .006), and DFS (HR, 0.71; 95% CI, 0.55-0.92; P = .008) and had a trend toward improved OS (HR, 0.84; 95% CI, 0.65-1.08; P = .163). Grade 3 through 5 adverse events were similar between the 2 arms, except for a higher incidence of mucositis in the NCRT arm (66.7% vs 55.8%; P = .01). CONCLUSIONS: The addition of nimotuzumab to concurrent weekly CRT improves PFS, LRC, and DFS. This combination provides a novel alternative therapeutic option to a 3-weekly schedule of 100 mg/m2 cisplatin in patients with locally advanced head and neck cancer who are treated with radical-intent CRT.


Asunto(s)
Anticuerpos Monoclonales Humanizados/uso terapéutico , Antineoplásicos Inmunológicos/uso terapéutico , Antineoplásicos/uso terapéutico , Quimioradioterapia/métodos , Cisplatino/uso terapéutico , Neoplasias de Cabeza y Cuello/terapia , Carcinoma de Células Escamosas de Cabeza y Cuello/terapia , Adulto , Anciano , Supervivencia sin Enfermedad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Mucositis/etiología , Supervivencia sin Progresión , Modelos de Riesgos Proporcionales , Tasa de Supervivencia , Trombocitopenia/etiología , Adulto Joven
16.
Clin Transl Radiat Oncol ; 45: 100709, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38179576

RESUMEN

In the past decade, stereotactic body radiation therapy (SBRT) has emerged as a valid treatment option for patients with localized prostate cancer. Despite the promising results of ultra-hypofractionation in terms of tolerance and disease control, the toxicity profile of SBRT for prostate cancer patients with a history of surgical treatment of benign prostate hyperplasia is still underreported. Here we present an overview of the available data on urinary morbidity for prostate cancer patients treated with SBRT after prior surgical treatments for benign prostate hyperplasia. Technical improvements useful to minimize toxicity and possible treatments for radiation-induced urethritis are discussed.

17.
Artículo en Inglés | MEDLINE | ID: mdl-38643307

RESUMEN

The systematic review by Saouli et al. investigates the role of radical prostatectomy (RP) in managing oligometastatic prostate cancer (omPCa) [1]. They analyzed the existing literature to assess the oncological and functional outcomes of RP for these patients. RP is feasible and has an acceptable risk of complications. However, the lack of consensus on the definitions of omPCa and the low-quality evidence of the available comparative and retrospective studies, RP in omPCa should not be recommended outside of clinical trials.

18.
Int J Radiat Oncol Biol Phys ; 118(4): 998-1010, 2024 Mar 15.
Artículo en Inglés | MEDLINE | ID: mdl-37863241

RESUMEN

PURPOSE: This systematic review and meta-analysis aimed to evaluate the evidence for ultrahypofractionated pelvic nodal irradiation in patients with prostate cancer, with a focus on reported acute and late toxicities. METHODS AND MATERIALS: A comprehensive search was conducted in 5 electronic databases (PubMed, Scopus, Web of Science, Cochrane Library, ClinicalTrials.gov) from inception until March 23, 2023. Eligible publications included patients with intermediate- and high-risk and node-positive prostate cancer who underwent elective or therapeutic ultrahypofractionated pelvic nodal irradiation. Primary outcomes included the presence of grade ≥2 rates of acute and late gastrointestinal and genitourinary toxicity based on the Common Terminology Criteria for Adverse Events or Radiation Therapy Oncology Group scales. Quality assessment was performed using National Institutes of Health tools for noncontrolled beforeand after (single arm) clinical trials, as well as single-arm observational studies. Because all outcomes were categorical variables, proportion was calculated to estimate the effect size and compare the outcomes after the intervention. RESULTS: We identified 16 publications that reported the use of ultrahypofractionated radiation therapy to treat the pelvis in prostate cancer. Seven publications met our criteria and were included in the meta-analysis, including 417 patients. The median total dose to the pelvic lymph nodes was 25 Gy (range, 25-28.5 Gy), with a median of 5 fractions. The prostate received a median dose of 40 Gy (range, 35-47.5 Gy). All studies used androgen deprivation therapy for a median duration of 18 months. The median follow-up period was 3 years (range, 0.5-5.6 years). The rates of acute grade ≥2 gastrointestinal and genitourinary toxicity were 8% (95% CI, 1%-15%) and 29% (95% CI, 18%-41%), respectively. For late grade ≥2 gastrointestinal and genitourinary toxicity, the rates were 13% (95% CI, 5%-21%) and 29% (95% CI, 17%-42%), respectively. CONCLUSIONS: Ultrahypofractionated pelvic nodal irradiation appears to be a safe approach in terms of acute and late genitourinary and gastrointestinal toxicity.


Asunto(s)
Neoplasias de la Próstata , Radioterapia de Intensidad Modulada , Masculino , Humanos , Neoplasias de la Próstata/patología , Antagonistas de Andrógenos/uso terapéutico , Fraccionamiento de la Dosis de Radiación , Pelvis , Sistema Urogenital , Radioterapia de Intensidad Modulada/métodos
19.
J Cancer Res Ther ; 2024 Jan 22.
Artículo en Inglés | MEDLINE | ID: mdl-38261432

RESUMEN

PURPOSE: This study aimed to evaluate the volumetric and geometric changes in the parotid glands and target volume during image-guided radiotherapy (IGRT) for locally advanced oropharyngeal cancers. MATERIALS AND METHODS: Twenty patients receiving radiotherapy using IGRT at a dose of 70 Gy/35 fractions/7 weeks for locally advanced oropharyngeal cancers were accrued. Radiotherapy planning computed tomography (CT) scans were performed at pre-radiotherapy (RT), 20, 40, and 60 Gy for each patient. Volume changes in target and parotids along with shifts of parotids were assessed with respect to pre-RT scan after co-registration. In study scans, GTVp and GTVn were recontoured as per particular CT. CTV and PTV were copied from planning CT to study CT. CTV was edited from anatomical barriers, and PTV was edited only from the skin in the study CT. The parotids were recontoured on each study scan. The center of mass (COM) of C2 vertebral body was considered as the reference to evaluate its shifts. RESULTS: There was a statistically significant percentage regression of ipsilateral and contralateral parotid mean volumes at the rate of 0.85%/0.207 cc and 0.98%/0.26 cc per day, respectively. We observed the mean medial shift of center of mass of ipsilateral parotid of 2.23 mm (p = 0.011) and contralateral parotid of 2.67 mm (p = 0.069) at the end of 60 Gy. GTVp (mean) reduced from 41.87 cc at 0 Gy to 31.13 cc (25.65%) at 60 Gy (p = 0.003), while GTVn (mean) reduced from 19.98 cc at 0 Gy to 10.79 cc (45.99%) at 60 Gy (p = 0.003). There was a statistically significant reduction in CTV and PTV volumes at 60 Gy. CONCLUSION: Statistically significant volumetric and geometric changes occurred during intensity-modulated radiation (IMRT), which were most prominent after 40 Gy and were maximum at 60 Gy. There was a medial shift of parotid glands toward the high-dose region. This study can be useful to devise an adaptive radiotherapy strategy.

20.
Clin Genitourin Cancer ; 22(2): 385-393, 2024 04.
Artículo en Inglés | MEDLINE | ID: mdl-38245435

RESUMEN

AIM: To validate the role of lymph node density as a prognostic marker in patients undergoing primary surgery and postneoadjuvant therapy in pathological node-positive urothelial bladder carcinoma. MATERIALS AND METHODS: Retrospective analysis of 503 patients who underwent radical cystectomy from 2006 to 2019 for muscle-invasive urothelial bladder carcinoma, of which 152 patients with pathological node-positive disease were analyzed. Demographic details, pathological findings, treatment details, disease-free, and overall survival were documented. X tile program analysis was used to divide patients with positive lymph nodes into 3 groups: LD1: <= 7, LD2 :>7 to <15, LD3: >15, and the optimal cut-off value obtained was 15%. To evaluate the impact of lymph node ratio, patients with positive lymph nodes into 3 categories for each cut-off point estimation method, the application generates the histogram, Kaplan-Meier plot and calculates hazard ratio, confidence intervals and P-values. Univariate and multivariate cox regression analysis was done with a P-value of <.05, considered significant. RESULTS: One hundred fifty-two patients (30.2%) had pathological nodal metastasis, with 87 of them having perinodal extension. Ninety-six underwent primary surgery, and 56 were postneoadjuvant chemotherapy. The median follow-up was 55.42 months. 68 of the 152 node-positive patients died of the disease. Median number of lymph nodes removed was 17.11. Lymph node density divided into tertiles were LD1 <7%, LD2 7-<15%, LD3 >15% showed 5-year RFS 40.5%,29.3%, 22.6% and 5 year OS was 55.5%, 42.4%,32.1% respectively. Cox regression analysis showed that age less than 55 years ,higher tumor stage, lymphovascular invasion, and higher lymph node ratio were significant in univariate and multivariate analysis. The lymph node density cut-off value of 15% was substantial among node-positive patients (P = .027), and subgroup analysis in upfront surgery with the adjuvant treatment group and postneoadjuvant chemotherapy group was also significant (P =.021). CONCLUSION: Pathological higher T stage, Age <55 years, Lymphovascular invasion, adjuvant chemotherapy , adjuvant radiation treatment and lymph node density had prognostic significance in both cohorts of patients who underwent upfront surgery and neoadjuvant chemotherapy. Lymph node density cut-off value of <15% was prognostically significant.


Asunto(s)
Carcinoma de Células Transicionales , Neoplasias de la Vejiga Urinaria , Humanos , Persona de Mediana Edad , Neoplasias de la Vejiga Urinaria/tratamiento farmacológico , Neoplasias de la Vejiga Urinaria/cirugía , Carcinoma de Células Transicionales/tratamiento farmacológico , Carcinoma de Células Transicionales/cirugía , Pronóstico , Estudios Retrospectivos , Terapia Neoadyuvante , Vejiga Urinaria/patología , Escisión del Ganglio Linfático , Ganglios Linfáticos/cirugía , Ganglios Linfáticos/patología , Cistectomía
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