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1.
CA Cancer J Clin ; 70(5): 375-403, 2020 09.
Artículo en Inglés | MEDLINE | ID: mdl-32683683

RESUMEN

Despite tremendous gains in the molecular understanding of exocrine pancreatic cancer, the prognosis for this disease remains very poor, largely because of delayed disease detection and limited effectiveness of systemic therapies. Both incidence rates and mortality rates for pancreatic cancer have increased during the past decade, in contrast to most other solid tumor types. Recent improvements in multimodality care have substantially improved overall survival, local control, and metastasis-free survival for patients who have localized tumors that are amenable to surgical resection. The widening gap in prognosis between patients with resectable and unresectable or metastatic disease reinforces the importance of detecting pancreatic cancer sooner to improve outcomes. Furthermore, the developing use of therapies that target tumor-specific molecular vulnerabilities may offer improved disease control for patients with advanced disease. Finally, the substantial morbidity associated with pancreatic cancer, including wasting, fatigue, and pain, remains an under-addressed component of this disease, which powerfully affects quality of life and limits tolerance to aggressive therapies. In this article, the authors review the current multidisciplinary standards of care in pancreatic cancer with a focus on emerging concepts in pancreatic cancer detection, precision therapy, and survivorship.


Asunto(s)
Carcinoma Ductal Pancreático/diagnóstico , Carcinoma Ductal Pancreático/terapia , Neoplasias Pancreáticas/diagnóstico , Neoplasias Pancreáticas/terapia , Grupo de Atención al Paciente , Carcinoma Ductal Pancreático/mortalidad , Quimioterapia Adyuvante , Toma de Decisiones Clínicas , Ensayos Clínicos como Asunto , Detección Precoz del Cáncer , Predisposición Genética a la Enfermedad , Humanos , Estadificación de Neoplasias , Páncreas/diagnóstico por imagen , Páncreas/patología , Pancreatectomía , Neoplasias Pancreáticas/mortalidad , Radioterapia Adyuvante , Factores de Riesgo , Nivel de Atención
2.
Cancer ; 129(2): 184-214, 2023 01 15.
Artículo en Inglés | MEDLINE | ID: mdl-36382577

RESUMEN

Cholangiocarcinoma is a lethal malignancy of the biliary epithelium that can arise anywhere along the biliary tract. Surgical resection confers the greatest likelihood of long-term survivability. However, its insidious onset, difficult diagnostics, and resultant advanced presentation render the majority of patients unresectable, highlighting the importance of early detection with novel biomarkers. Developing liver-directed therapies and emerging targeted therapeutics may offer improved survivability for patients with unresectable or advanced disease. In this article, the authors review the current multidisciplinary standards of care in resectable and unresectable cholangiocarcinoma, with an emphasis on novel biomarkers for early detection and nonsurgical locoregional therapy options.


Asunto(s)
Neoplasias de los Conductos Biliares , Colangiocarcinoma , Humanos , Conductos Biliares Intrahepáticos/patología , Neoplasias de los Conductos Biliares/terapia , Neoplasias de los Conductos Biliares/patología , Colangiocarcinoma/terapia , Colangiocarcinoma/patología
3.
J Surg Oncol ; 126(3): 513-522, 2022 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-35522249

RESUMEN

BACKGROUND AND OBJECTIVES: Colorectal liver metastasis (CRLM) is a leading cause of morbidity and mortality in patients with colorectal cancer. Hepatic arterial infusion (HAI) chemotherapy has been demonstrated to improve survival in patients with resected CRLM and to facilitate conversion of technically unresectable disease. METHODS: Between 2016 and 2018, n = 22 HAI pumps were placed for CRLM. All patients received systemic chemotherapy concurrently with HAI floxuridine/dexamethasone. Overall survival (OS) and progression-free survival (PFS) were assessed using the Kaplan-Meier method. RESULTS: HAI pumps were placed in seven patients with completely resected CRLM and 15 patients with unresectable disease. Twenty-one patients received HAI floxuridine with a median of 5 total HAI cycles (interquartile range: 4-7). Biliary sclerosis was the most common HAI-related complication (n = 5, 24%). Of the 13 patients treated to convert unresectable CRLM, 3 (23%) underwent hepatic resection with curative intent after a median of 7 HAI cycles (range: 4-10). For all HAI patients, the mean OS was 26.7 months from CRLM diagnosis, while the median PFS and hepatic PFS from pump placement were 9 and 13 months, respectively. CONCLUSION: Concomitant HAI and systemic therapy can be utilized at multidisciplinary programs for patients with advanced CRLM, both in the adjuvant setting and to facilitate conversion of unresectable disease.


Asunto(s)
Neoplasias Colorrectales , Neoplasias Hepáticas , Protocolos de Quimioterapia Combinada Antineoplásica , Neoplasias Colorrectales/patología , Floxuridina , Fluorouracilo , Arteria Hepática/patología , Humanos , Bombas de Infusión , Infusiones Intraarteriales , Neoplasias Hepáticas/tratamiento farmacológico , Neoplasias Hepáticas/secundario , Neoplasias Hepáticas/cirugía
4.
Ann Surg Oncol ; 28(13): 8152-8159, 2021 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-34448960

RESUMEN

BACKGROUND: Intrahepatic cholangiocarcinoma (ICC) is a rare cancer. Patients in rural areas may face reduced access to advanced treatments often only available at referral centers. We evaluated the association of referral center treatment with treatment patterns, outcomes, and geography in patients with ICC. METHODS: We queried the Oregon State Cancer Registry for ICC between 1997 and 2016, collecting clinicopathologic, demographic, and oncologic data. Patients were classified by treatment at a referral center or non-referral center. 'Crowfly' distance to the nearest referral center (DRC) was calculated. Outcomes were evaluated using Kaplan-Meier, Cox proportional hazards modeling, and logistic regression. RESULTS: Over 20 years, 740 patients with ICC had a median age of 66 years. Slightly more than half (n = 424, 57%) were non-referral center treated and 316 (43%) were referral center treated. Referral center treatment increased over time (odds ratio [OR] 1.03/year, p < 0.05). Referral center-treated patients had improved overall survival in all patients (median 9 vs. 4 months, p < 0.001), in the non-metastatic group (median 13 vs. 6 months, p < 0.001), and in patients not receiving liver resection (median 6 vs. 3 months, p < 0.05). On multivariable analysis, referral center-treated patients more often underwent chemotherapy, resection, or radiation (all p < 0.05). Increasing DRC (OR 0.98/20 km, p < 0.05) was independently associated with non-referral center treatment. CONCLUSION: Patients with ICC who are evaluated at a referral center are more likely to receive treatments associated with better oncologic outcomes, including patients who are not managed with hepatic resection. Increasing the DRC is associated with treatment at a non-referral center; interventions to facilitate referral, such as telemedicine, may lead to improved outcomes for patients with ICC in rural states.


Asunto(s)
Neoplasias de los Conductos Biliares , Colangiocarcinoma , Anciano , Neoplasias de los Conductos Biliares/cirugía , Conductos Biliares Intrahepáticos , Colangiocarcinoma/cirugía , Colangiocarcinoma/terapia , Hepatectomía , Humanos , Derivación y Consulta
5.
J Surg Oncol ; 124(4): 581-588, 2021 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-34115368

RESUMEN

BACKGROUND: Gallbladder cancer (GBC) is often incidentally diagnosed after cholecystectomy. Intra-operative biliary tract violations (BTV) have been recently associated with development of peritoneal disease (PD). The degree of BTV may be associated with PD risk, but has not been previously investigated. METHODS: We reviewed patients with initially non-metastatic GBC treated at our institution from 2003 to 2018. Patients were grouped based on degree of BTV during their treatment: major (e.g., cholecystotomy with bile spillage, n = 27, 29%), minor (e.g., intra-operative cholangiogram, n = 18, 19%), and no violations (n = 48, 55%). Overall survival (OS) and peritoneal disease-free survival (PDFS) were evaluated with Kaplan-Meier and Cox proportional hazards modeling. RESULTS: Ninety-three patients were identified; the median age was 64 years (range 31-87 years). Seventy-six (82%) were incidentally diagnosed. The median follow-up was 23 months; 20 (22%) patients developed PD. The 3-year PDFS for patients with major, minor, and no BTV was 52%, 83%, and 98%, respectively (major vs. none: p < 0.001; minor vs. none: p < 0.01). BTV was not associated with 5-year OS (HR 1.53, p = 0.16). CONCLUSION: Increasing degree of BTV is associated with higher risk of peritoneal carcinomatosis in patients with GBC and should be considered during preoperative risk stratification. Reporting biliary tract violations during cholecystectomy is encouraged.


Asunto(s)
Adenocarcinoma/cirugía , Sistema Biliar/patología , Colecistectomía/efectos adversos , Neoplasias de la Vesícula Biliar/cirugía , Neoplasias Peritoneales/patología , Adenocarcinoma/patología , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Estudios de Seguimiento , Neoplasias de la Vesícula Biliar/patología , Humanos , Masculino , Persona de Mediana Edad , Neoplasias Peritoneales/etiología , Pronóstico , Estudios Retrospectivos , Tasa de Supervivencia
6.
AJR Am J Roentgenol ; 217(3): 691-698, 2021 09.
Artículo en Inglés | MEDLINE | ID: mdl-32997517

RESUMEN

BACKGROUND. Transarterial chemoembolization (TACE) has synergistic properties when combined with ablative therapies for hepatocellular carcinoma (HCC). OBJECTIVE. The purpose of our study was to compare outcomes for inoperable HCC between TACE with percutaneous thermal ablation (TACE-TA) and TACE with stereotactic body radiotherapy (TACE-SBRT) using propensity score-weighted cohorts. METHODS. This retrospective study included 190 patients with a single inoperable HCC treated from 2007 to 2018 by either TACE-SBRT (n = 90) or TACE-TA (n = 100). The primary outcome was overall survival (OS). Secondary outcomes included progression-free survival (PFS) and hepatotoxicity (defined as Child-Pugh score elevation of ≥ 2 within 2-6 months after treatment). Fine-Gray competing risk models with propensity score weighting and transplant as the competing risk factor were used to model OS and PFS. RESULTS. The median follow-up time was 48.2 months. Both OS and PFS were significantly higher for TACE-TA (77% and 76%, respectively, at 2 years) than TACE-SBRT (49% and 50%, respectively, at 2 years) in the propensity score-weighted multivariate model (OS: subdistribution hazard ratio [sHR] = 2.70, p < .001; PFS: sHR = 1.71, p = .02). Treatment-related hepatotoxicity occurred in 9% of patients who underwent TACE-TA versus 27% of those who underwent TACE-SBRT (p = .01). For the subset of patients with Barcelona Clinic Liver Cancer A HCC and Child-Pugh A cirrhosis (TACE-SBRT, n = 36 patients; TACE-TA, n = 55 patients), OS (p = .11) and PFS (p = .19) were not significantly different between the two treatment modalities. CONCLUSION. Compared with TACE-SBRT, TACE-TA showed superior OS and PFS, possibly from its lesser hepatotoxicity. The two strategies did not differ in OS and PFS for patients with the earliest-stage HCC and preserved liver function. CLINICAL IMPACT. Across all patients, TACE-TA may be superior to TACE-SBRT for inoperable HCC.


Asunto(s)
Técnicas de Ablación/métodos , Carcinoma Hepatocelular/terapia , Quimioembolización Terapéutica/métodos , Neoplasias Hepáticas/terapia , Radiocirugia/métodos , Anciano , Terapia Combinada/métodos , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Puntaje de Propensión , Estudios Retrospectivos , Análisis de Supervivencia , Resultado del Tratamiento
7.
J Cancer Educ ; 35(1): 105-111, 2020 02.
Artículo en Inglés | MEDLINE | ID: mdl-30467774

RESUMEN

Radiation therapy (RT) is an effective treatment modality for hepatocellular carcinoma (HCC), but globally, it is underutilized. In Russia, practice patterns with regard to liver-directed radiation are unknown. Under the auspices of Russian Society of Clinical Oncology (RUSSCO), our team conducted an IRB-approved contouring workshop for Russian radiation oncologists. Pre- and post-workshop surveys were analyzed to determine baseline clinical experience and patterns of care for liver-directed RT among Russian providers. The effect of the contouring workshop on participants' knowledge was tested using mixed effects model. Forty pre-workshop and 24 post-workshop questionnaires were analyzable with a 100% response rate. Sixty percent of respondents had never evaluated a patient with HCC and only 8% (3 out of 40) reported treating an HCC patient with liver-directed RT. Nonetheless, 73% of respondents were comfortable offering liver-directed RT prior to the workshop. After the workshop, 85% of respondents felt comfortable treating a patient with HCC with liver-directed RT and 50% were comfortable recommending stereotactic body radiation therapy (SBRT). Measures of knowledge pertaining to evaluation of HCC patients and selection for appropriate liver-directed therapies were dramatically improved after the workshop. Liver-directed RT is not commonly used in Russia in the management of patients with HCC, and few centers are equipped for motion management. Our contouring workshop resulted in dramatically improved understanding of the evaluation and management of HCC patients. We recommend starting with a more protracted fractionated RT and building experience through attendance of additional educational activities, participation in multidisciplinary liver tumor boards, and prospective analysis of treatment toxicity and outcomes.


Asunto(s)
Carcinoma Hepatocelular/radioterapia , Competencia Clínica , Neoplasias Hepáticas/radioterapia , Guías de Práctica Clínica como Asunto/normas , Pautas de la Práctica en Medicina/normas , Oncología por Radiación/educación , Carcinoma Hepatocelular/epidemiología , Carcinoma Hepatocelular/patología , Manejo de la Enfermedad , Humanos , Neoplasias Hepáticas/epidemiología , Neoplasias Hepáticas/patología , Oncólogos de Radiación , Radiocirugia/métodos , Federación de Rusia/epidemiología , Encuestas y Cuestionarios , Resultado del Tratamiento
8.
Rep Pract Oncol Radiother ; 24(3): 294-297, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31080366

RESUMEN

INTRODUCTION: The Hirsch index (h-index) evaluates citation-based scholarly activity, but has limited ability to acknowledge those publishing a smaller number of manuscripts with exceedingly high citations. The g-index addresses this limitation by assessing the largest number of manuscripts (g) by an author cited at least (g × g) times, but has yet to be applied to radiation oncology resident productivity. METHODS: A list of recent radiation oncology resident graduates (comprising 86% of the 2016 graduating class) and their post-residency career choice was compiled. The Scopus bibliometric citation database was searched to collect and calculate g-index data for each resident. RESULTS: The mean g-index score for all resident graduates was 7.16. Residents with a PhD had significantly higher g-index scores (11.97 versus 5.80; p < 0.01), while there was no statistically significant difference in g-index scores between male and female residents. Residents choosing academic careers had higher g-index scores than those choosing private practice (9.47 versus 4.99; p < 0.01). Programs graduating at least three residents produced significantly higher g-index scores/resident than those graduating two residents, and while comprising only 25% of programs and 45% of residents, produced 60% of academic careers (p < 0.02). CONCLUSION: Radiation oncology resident graduates published on average a minimum of seven manuscripts cited at least 49 times. PhD-degree graduates had significantly higher g-index scores, as did residents choosing academic over private practice careers. There was no significant gender-related difference in g-index score regardless of career choice. The majority of academic careers are produced from programs graduating at least three residents.

9.
J Neurooncol ; 128(2): 357-64, 2016 06.
Artículo en Inglés | MEDLINE | ID: mdl-27131883

RESUMEN

To identify parameters that influence local control after stereotactic radiosurgery (SRS) for meningiomas we retrospectively analyzed all meningiomas treated with Gamma Knife SRS at our institution from 1991 to 2007. Endpoints were measured from the date of SRS and estimated using the Kaplan-Meier method; subgroups were compared with log-rank tests. Sex, performance status, age, SRS setting, radiation dose, grade, volume and location were evaluated with univariate and multivariate Cox proportional hazards analyses. Of 280 patients with 438 tumors, 264 patients with clinical follow-up and 406 tumors with imaging follow-up were analyzed (median follow-up: 75.9 months). Thirty-seven percent of the tumors had no tissue diagnosis, 32 % were benign (grade I), 12 % atypical (grade II), and 19 % malignant (grade III). Five-year freedom from progression (FFP) was 97 % for presumed meningiomas, 87 % for grade I tumors, 56 % for grade II tumors, and 47 % for grade III tumors (p < 0.0001). Five-year FFP probabilities for upfront SRS versus SRS at recurrence after surgery versus SRS at recurrence after RT were 97, 86, and 38 %, respectively (p < 0.0001). Univariate analysis revealed that higher grade, larger target volume (median diameter: 2.4 cm) and SRS setting were associated with poorer FFP. Only target volume and SRS setting remained significant on multivariate analysis. Local control of presumed and grade I meningiomas is excellent with Gamma Knife SRS, but is suboptimal with high-grade tumors as well as for those treated at recurrence after RT or of large volume.


Asunto(s)
Neoplasias Meníngeas/radioterapia , Meningioma/radioterapia , Radiocirugia , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Relación Dosis-Respuesta en la Radiación , Femenino , Estudios de Seguimiento , Humanos , Estimación de Kaplan-Meier , Masculino , Neoplasias Meníngeas/diagnóstico por imagen , Neoplasias Meníngeas/patología , Meningioma/diagnóstico por imagen , Meningioma/patología , Persona de Mediana Edad , Análisis Multivariante , Clasificación del Tumor , Modelos de Riesgos Proporcionales , Recurrencia , Estudios Retrospectivos , Carga Tumoral , Adulto Joven
10.
J Neurooncol ; 126(1): 193-200, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-26493740

RESUMEN

Central neurocytomas are uncommon intraventricular neoplasms whose optimal management remains controversial due to their rarity. We assessed outcomes for a historical cohort of neurocytoma patients and evaluated effects of tumor atypia, size, resection extent, and adjuvant radiotherapy. Progression-free survival (PFS) was measured by Kaplan-Meier and Cox proportional hazards methods. A total of 28 patients (15 males, 13 females) were treated between 1995 and 2014, with a median age at diagnosis of 26 years (range 5-61). Median follow-up was 62.2 months and 3 patients were lost to follow-up postoperatively. Thirteen patients experienced recurrent/progressive disease and 2-year PFS was 75% (95% CI 53-88%). Two-year PFS was 48% for MIB-1 labeling >4% versus 90% for ≤4% (HR 5.4, CI 2.2-27.8, p = 0.0026). Nine patients (32%) had gross total resections (GTR) and 19 (68%) had subtotal resections (STR). PFS for >80% resection was 83 versus 67% for ≤80% resection (HR 0.67, CI 0.23-2.0, p = 0.47). Three STR patients (16%) received adjuvant radiation which significantly improved overall PFS (p = 0.049). Estimated 5-year PFS was 67% for STR with radiotherapy versus 53% for STR without radiotherapy. Salvage therapy regimens were diverse and resulted in stable disease for 54% of patients and additional progression for 38 %. Two patients with neuropathology-confirmed atypical neurocytomas died at 4.3 and 113.4 months after initial surgery. For central neurocytomas, MIB-1 labeling index >4% is predictive of poorer outcome and our data suggest that adjuvant radiotherapy after STR may improve PFS. Most patients requiring salvage therapy will be stabilized and multiple modalities can be effectively utilized.


Asunto(s)
Neoplasias Encefálicas/diagnóstico , Neoplasias Encefálicas/terapia , Neurocitoma/diagnóstico , Neurocitoma/terapia , Resultado del Tratamiento , Adolescente , Adulto , Instituciones Oncológicas/estadística & datos numéricos , Niño , Preescolar , Estudios de Cohortes , Progresión de la Enfermedad , Femenino , Humanos , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Pronóstico , Adulto Joven
11.
Support Care Cancer ; 24(8): 3517-24, 2016 08.
Artículo en Inglés | MEDLINE | ID: mdl-27005465

RESUMEN

PURPOSE: The purpose of the study was to better understand why patients with history of head and neck cancer (HNC) treated with radiotherapy are using medical marijuana (MM). METHODS: Established HNC quality of life questionnaires and our own MM quality of life questionnaire were sent to 15 HNC patients treated at our institution who reported using MM. Patients are clinically disease free and currently using MM to manage long-term side effects after curative HNC treatment. RESULTS: There was a 100 % response rate. Median time from treatment was 45 months (21-136 months). Most patients smoked marijuana (12 patients), while others reported ingestion (4 patients), vaporizing (3 patients), and use of homemade concentrated oil (1 patient). Six patients reported prior recreational marijuana use before diagnosis. MM provided benefit in altered sense, weight maintenance, depression, pain, appetite, dysphagia, xerostomia, muscle spasm, and sticky saliva. CONCLUSIONS: HNC patients report MM use to help with long-term side effects of radiotherapy.


Asunto(s)
Carcinoma de Células Escamosas/tratamiento farmacológico , Carcinoma de Células Escamosas/radioterapia , Neoplasias de Cabeza y Cuello/tratamiento farmacológico , Neoplasias de Cabeza y Cuello/radioterapia , Marihuana Medicinal/uso terapéutico , Calidad de Vida/psicología , Adulto , Anciano , Femenino , Humanos , Masculino , Marihuana Medicinal/administración & dosificación , Marihuana Medicinal/farmacología , Persona de Mediana Edad , Encuestas y Cuestionarios
12.
Ann Surg Oncol ; 21(11): 3616-20, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-24943237

RESUMEN

BACKGROUND: Chemoradiotherapy (CRT), the primary treatment for anal cancer, achieves complete tumor regression in most patients. Abdominoperineal resection (APR) is reserved for persistent or recurrent disease. An additional boost dose of radiation after CRT often is used to improve the response rate for advanced local disease (T3, 4, and N+). This study examines the need for salvage APR after radiation boost. METHODS: Patients with de novo anal cancer in the National Cancer Data Base from the years 2004-2010 were analyzed. Patients with missing data points or who did not receive standard CRT were excluded. Variables included age, gender, race, primary tumor size, clinical nodal status, TNM stage, radiation boost, and APR. A logistic regression model assessing the relationship between boost radiation and APR was developed. RESULTS: Of 1,025 patients meeting inclusion criteria, 450 patients received CRT without a radiation boost and 575 patients received CRT with a radiation boost. The two groups were similar in age, gender, race, tumor size, nodal status, and TNM stage (p values all >0.05). Significant multivariate predictors of salvage APR were tumor size, negative nodal status, and boost RT (all p < 0.05), whereas gender, age, race, and TNM stage were not significant (all p > 0.05). When controlling for age, tumor size, and nodal status, salvage APR is less likely to occur after boost RT (odds ratio 0.63; 95 % confidence interval 0.47, 0.85; p = 0.003). CONCLUSIONS: When controlling for age, tumor size, and nodal status, those who received boost radiation for anal cancer were less likely to require salvage APR.


Asunto(s)
Abdomen/cirugía , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias del Ano/radioterapia , Carcinoma de Células Escamosas/radioterapia , Quimioradioterapia , Perineo/cirugía , Terapia Recuperativa , Anciano , Neoplasias del Ano/tratamiento farmacológico , Neoplasias del Ano/cirugía , Carcinoma de Células Escamosas/tratamiento farmacológico , Carcinoma de Células Escamosas/cirugía , Terapia Combinada , Bases de Datos Factuales , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Estadificación de Neoplasias , Pronóstico , Dosificación Radioterapéutica , Factores de Riesgo
13.
Cureus ; 16(9): e68881, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39246640

RESUMEN

Numerous genomic-based early detection screening tests are being developed. These tests have the potential to revolutionize current single-organ screening paradigms, especially in gastrointestinal cancers. In this review, we underscore the performance of these genomic-based early detection tests based on prospective clinical trials. Moreover, we discuss a professional advancement for gastroenterologists in the diagnostic assessment of individuals who are cancer signal positive.

14.
J Med Radiat Sci ; 71(1): 110-113, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-37712320

RESUMEN

INTRODUCTION: For liver stereotactic body radiation therapy (SBRT), the placement of fiducial markers or retained ethiodized oil by transarterial chemoembolisation (TACE) provides a landmark for consistent target localisation. TACE and fiducial markers are invasive procedures that harbour additional risks. We hypothesise that liver SBRT can be accurately delivered without the use of these invasive surrogate markers. METHODS: We retrospectively identified 50 consecutive patients who underwent liver SBRT with respiratory motion management to a single lesion which exhibited retained ethiodized oil per prior TACE delivery. For each SBRT fraction, two manual rigid image registrations were performed by the treating physician. One using the liver contour as a surrogate for the target and second aligning only to the radio-opaque retained ethiodized oil of the treated lesion. The magnitude of the displacement vector between the two registration methods was used to assess the accuracy of target localisation if ethiodized oil was not present. RESULTS: For the 50 patients, a total of 244 analysable cone-beam CTs (CBCTs) were included (six CBCTs excluded due to poor ethiodized oil visualisation). Respiratory motion management techniques consisted of active breathing control for 13 and abdominal compression for 37 patients. Forty-two patients had peripheral lesions and eight had central lesions (<2 cm from left and right portal veins). The average target localisation offset between the two registration methods (i.e. liver contour vs. retained ethiodized oil alignment) for patients with a single peripheral or central liver lesion was 5.8 and 5.3 mm, respectively. CONCLUSIONS: Across all patients, the average change in target position exceeded 5 mm for image registration methods based on the liver contour alone versus the retained ethiodized oil region. This suggests that margins greater than 5 mm may be required for respiratory motion-managed liver SBRT treatments in patients who do not undergo prior TACE or fiducial placement.


Asunto(s)
Neoplasias Hepáticas , Radiocirugia , Humanos , Aceite Etiodizado , Estudios Retrospectivos , Radiocirugia/efectos adversos , Neoplasias Hepáticas/diagnóstico por imagen , Neoplasias Hepáticas/radioterapia , Neoplasias Hepáticas/patología , Marcadores Fiduciales
16.
JCO Oncol Pract ; 19(12): 1111-1115, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37851937

RESUMEN

A multitude of blood-based multicancer early detection (MCED) tests assessing cancer-related alterations in circulating genomic analytes and other associated signatures are currently being developed with the potential to disrupt current single-organ screening paradigms. Pathways for clinical implementation of these novel MCED tests have not been delineated, particularly for the patients with signal positive results requiring additional confirmatory testing. In this overview, we highlight early results from prospective clinical studies testing the efficacy of genomic MCED tests in cohorts of patients without known cancer diagnoses. Additionally, we discuss a proposed professional expansion of the oncology practice relating to the diagnostic workup of individuals found to have an MCED signal positive for cancer. As MCED blood tests have the potential to dramatically upend current cancer screening paradigms and downstream cancer therapy, it is imperative for oncologists to be aware of important clinical studies and the multitude of unanswered questions. The current gaps in the clinical implication of these tests may serve as a meaningful and rewarding expansion of oncology practice.


Asunto(s)
Neoplasias , Oncólogos , Humanos , Estudios Prospectivos , Neoplasias/diagnóstico , Neoplasias/genética , Oncología Médica , Detección Precoz del Cáncer
17.
J Gastrointest Cancer ; 54(4): 1140-1150, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36719559

RESUMEN

PURPOSE: Non-operative management of patients with locally advanced rectal cancer (LARC) is emerging as a popular approach for patients that have no evidence of disease following neoadjuvant therapy. However, high rates of local recurrence or distant metastases have highlighted the urgent need for robust biomarker strategies to aid clinical management of these patients. METHODS: This review summarizes recent advances in the utility of cell-free (cf) and circulating tumor (ct) DNA as potential biomarkers to help guide individualized non-operative management strategies for LARC patients receiving neoadjuvant therapy. RESULTS: Liquid biopsies and the detection of cfDNA/ctDNA is an emerging technology with the potential to provide a non-invasive approach to monitor disease response and improve the identification of patients with LARC that would best benefit from non-operative management. CONCLUSIONS: Substantial work is still needed before cfDNA/ctDNA monitoring can be widely adopted in the clinical setting. Studies reviewed herein highlight several areas of opportunity for improving the effectiveness and utility of cfDNA/ctDNA for managing patients with LARC.


Asunto(s)
Ácidos Nucleicos Libres de Células , ADN Tumoral Circulante , Neoplasias del Recto , Humanos , ADN Tumoral Circulante/uso terapéutico , Terapia Neoadyuvante , Neoplasias del Recto/terapia , Neoplasias del Recto/tratamiento farmacológico , Biomarcadores de Tumor/genética , Ácidos Nucleicos Libres de Células/uso terapéutico
18.
Cell Mol Gastroenterol Hepatol ; 16(6): 881-894, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37678799

RESUMEN

Colorectal cancer is the second leading cause of cancer-related deaths in the United States and accounts for an estimated 1 million deaths annually worldwide. The liver is the most common site of metastatic spread from colorectal cancer, significantly driving both morbidity and mortality. Although remarkable advances have been made in recent years in the management for patients with colorectal cancer liver metastases, significant challenges remain in early detection, prevention of progression and recurrence, and in the development of more effective therapeutics. In 2017, our group held a multidisciplinary state-of-the-science symposium to discuss the rapidly evolving clinical and scientific advances in the field of colorectal liver metastases, including novel early detection and prognostic liquid biomarkers, identification of high-risk cohorts, advances in tumor-immune therapy, and different regional and systemic therapeutic strategies. Since that time, there have been scientific discoveries translating into therapeutic innovations addressing the current management challenges. These innovations are currently reshaping the treatment paradigms and spurring further scientific discovery. Herein, we present an updated discussion of both the scientific and clinical advances and future directions in the management of colorectal liver metastases, including adoptive T-cell therapies, novel blood-based biomarkers, and the role of the tumor microbiome. In addition, we provide a comprehensive overview detailing the role of modern multidisciplinary clinical approaches used in the management of patients with colorectal liver metastases, including considerations toward specific molecular tumor profiles identified on next generation sequencing, as well as quality of life implications for these innovative treatments.


Asunto(s)
Neoplasias Colorrectales , Neoplasias Hepáticas , Humanos , Calidad de Vida , Neoplasias Hepáticas/terapia , Biomarcadores , Neoplasias Colorrectales/terapia
19.
Cancer Med ; 12(12): 12986-12995, 2023 06.
Artículo en Inglés | MEDLINE | ID: mdl-37132281

RESUMEN

BACKGROUND: Neoadjuvant treatment with nab-paclitaxel and gemcitabine for potentially operable pancreatic adenocarcinoma has not been well studied in a prospective interventional trial and could down-stage tumors to achieve negative surgical margins. METHODS: A single-arm, open-label phase 2 trial (NCT02427841) enrolled patients with pancreatic adenocarcinoma deemed to be borderline resectable or clinically node-positive from March 17, 2016 to October 5, 2019. Patients received preoperative gemcitabine 1000 mg/m2 and nab-paclitaxel 125 mg/m2 on Days 1, 8, 15, every 28 days for two cycles followed by chemoradiation with 50.4 Gy intensity-modulated radiation over 28 fractions with concurrent fluoropyrimidine chemotherapy. After definitive resection, patients received four additional cycles of gemcitabine and nab-paclitaxel. The primary endpoint was R0 resection rate. Other endpoints included treatment completion rate, resection rate, radiographic response rate, survival, and adverse events. RESULTS: Nineteen patients were enrolled, with the majority having head of pancreas primary tumors, both arterial and venous vasculature involvement, and clinically positive nodes on imaging. Among them, 11 (58%) underwent definitive resection and eight of 19 (42%) achieved R0 resection. Disease progression and functional decline were primary reasons for deferring surgical resection after neoadjuvant treatment. Pathologic near-complete response was observed in two of 11 (18%) resection specimens. Among the 19 patients, the 12-month progression-free survival was 58%, and 12-month overall survival was 79%. Common adverse events were alopecia, nausea, vomiting, fatigue, myalgia, peripheral neuropathy, rash, and neutropenia. CONCLUSION: Gemcitabine and nab-paclitaxel followed by long-course chemoradiation represents a feasible neoadjuvant treatment strategy for borderline resectable or node-positive pancreatic cancer.


Asunto(s)
Adenocarcinoma , Carcinoma Ductal Pancreático , Neutropenia , Neoplasias Pancreáticas , Humanos , Gemcitabina , Neoplasias Pancreáticas/patología , Adenocarcinoma/tratamiento farmacológico , Estudios Prospectivos , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , Albúminas , Paclitaxel , Neutropenia/inducido químicamente , Terapia Neoadyuvante , Neoplasias Pancreáticas
20.
Am J Manag Care ; 28(7 Suppl): S123-S132, 2022 08.
Artículo en Inglés | MEDLINE | ID: mdl-36067342

RESUMEN

Cancer remains the second leading cause of death in the United States despite decades of treatment advances. While death rates have fallen for breast, cervical, and colorectal cancers, all of which have population-based screening options, rates remain high for the majority of malignancies, with most diagnosed in the later stages. In addition, adherence to screening recommendations in the United States is low, with high rates of false-positive results. Multi-cancer early detection (MCED) tests detect early cancer signals from as many as 50 or more neoplasms using cell-free DNA and other circulating analytes in blood. They may be more accessible and easier to disseminate than organ-specific tests. However, the impact on cancer-related deaths remains unclear. Other unanswered questions include cost-effectiveness, the impact of false-positive results on patients and costs, the overdiagnosis of more indolent cancers, uptake among patients and clinicians, and the need for protocols covering their use. Research and development of blood-based MCED tests continue.


Asunto(s)
Detección Precoz del Cáncer , Neoplasias , Congresos como Asunto , Análisis Costo-Beneficio , Detección Precoz del Cáncer/métodos , Humanos , Tamizaje Masivo/métodos , Neoplasias/diagnóstico , Estados Unidos
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