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1.
J Pediatr Hematol Oncol Nurs ; 41(3): 212-219, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38523328

RESUMEN

Background: As the majority of pediatric patients with cancer survive their disease, generating a population of over 500,000 childhood cancer survivors in the United States, it is imperative to minimize the lifelong consequences of treatment, which include temporary or permanent infertility caused by certain cancer treatments. A fertility consultation at diagnosis can provide patients and families with the opportunity to be informed regarding the likelihood of gonadal dysfunction and to consider fertility preservation. Method: After our pediatric hospital started to offer tissue cryopreservation, we initiated this evidence-based interventional quality improvement project. Our primary aim was to ensure that all newly diagnosed prepubertal patients with cancer who met the criteria for fertility tissue preservation were correctly identified and offered an educational consultation and preservation. Results: Between July 15, 2022 and October 30, 2022, 54 patients' treatment plans were evaluated to determine treatment-related infertility risk using the Oncofertility Consortium Pediatric Initiative Network's Risk Assessment tool. Fifteen patients were at a high level of significantly increased risk and 13 were eligible for consultation. Seven (46%) patients and their families received a consultation. Initiation of treatment before referral was the primary reason for lack of consultation. Six of seven patients receiving consultation (86%) elected to undergo preservation. Preservation procedures did not cause a delay in starting treatment for those patients. Discussion: A fertility preservation program with established policies and processes can increase the likelihood that prepubertal patients at high risk for infertility are correctly identified, educated, and offered preservation.


Asunto(s)
Preservación de la Fertilidad , Hospitales Pediátricos , Neoplasias , Humanos , Preservación de la Fertilidad/métodos , Neoplasias/complicaciones , Niño , Femenino , Masculino , Preescolar , Criopreservación , Supervivientes de Cáncer , Adolescente
2.
J Pediatr Hematol Oncol ; 42(4): e254-e257, 2020 05.
Artículo en Inglés | MEDLINE | ID: mdl-30531600

RESUMEN

Axial skeleton primary tumor, metastatic disease at presentation, incomplete surgical resection, and <90% tumor necrosis have all been known to influence prognosis adversely in osteosarcoma. Relapse of osteosarcoma, typically occurring within the first 18 months of therapy, with an incidence rate of 50% is treated with surgery, chemotherapy, and targeted therapy. Here, we discuss 2 patients treated with pazopanib, a multi-tyrosine kinase inhibitor presently approved to treat renal cell carcinoma and soft tissue sarcomas. Case 1 achieved positive response and remains on pazopanib. Case 2 sustained gastrointestinal toxicity requiring suspension of drug, despite achieving stable disease.


Asunto(s)
Neoplasias Óseas/tratamiento farmacológico , Recurrencia Local de Neoplasia/tratamiento farmacológico , Osteosarcoma/tratamiento farmacológico , Pirimidinas , Sulfonamidas , Adulto , Neoplasias Óseas/metabolismo , Neoplasias Óseas/patología , Femenino , Humanos , Indazoles , Masculino , Recurrencia Local de Neoplasia/metabolismo , Recurrencia Local de Neoplasia/patología , Osteosarcoma/metabolismo , Osteosarcoma/patología , Pirimidinas/administración & dosificación , Pirimidinas/efectos adversos , Sulfonamidas/administración & dosificación , Sulfonamidas/efectos adversos
3.
J Adolesc Young Adult Oncol ; 7(2): 249-253, 2018 04.
Artículo en Inglés | MEDLINE | ID: mdl-29058500

RESUMEN

Many adolescent female cancer patients will survive into their reproductive years. Pediatric oncologists are advised to discuss oncofertility during treatment planning. In this pilot study, 19 adolescent females completed a retrospective survey assessing recall of a fertility discussion, satisfaction with fertility knowledge, and multiple factors that may influence recall, including parental involvement in decision-making. Eleven respondents (58%) remembered a discussion about infertility risk and 9 (47%) about fertility preservation. Most who recalled a discussion were satisfied with their fertility knowledge (10/11, 90.9%). In this study, we validated the feasibility of survey administration and identified trends in oncofertility counseling at our center.


Asunto(s)
Toma de Decisiones , Preservación de la Fertilidad/métodos , Infertilidad Femenina/prevención & control , Recuerdo Mental , Neoplasias/terapia , Oncólogos/estadística & datos numéricos , Planificación de Atención al Paciente , Adolescente , Femenino , Estudios de Seguimiento , Humanos , Proyectos Piloto , Pronóstico , Estudios Retrospectivos , Encuestas y Cuestionarios
4.
J Adolesc Health ; 62(2): 176-183, 2018 02.
Artículo en Inglés | MEDLINE | ID: mdl-29248393

RESUMEN

PURPOSE: The objectives of this study were to determine whether pediatricians are more likely than other primary care physicians (PCPs) to refer newly diagnosed adolescent and young adult patients with cancer to pediatric oncological specialists, and to assess the physician and patient characteristics that affect patterns of referral. METHODS: A cross-sectional vignette survey was mailed to PCPs to examine hypothetical referral decisions as a function of physician characteristics and patient characteristics, including diagnosis, age, gender, race/ethnicity, family support, transportation, insurance, and patient preference for site of care. Pediatrician PCPs and nonpediatrician PCPs (family medicine, internal medicine, and emergency medicine physicians) practicing in North Carolina and in Washington State participated in the study. RESULTS: A total of 406 surveys were completed (35.8% response rate). Sixty percent of pediatric PCPs referred their hypothetical patients with cancer to pediatric specialists (PSs), compared with only 37% of nonpediatric PCPs. Patient age also influenced referral patterns; 89% of 13-year-olds, 74% of 16-year-olds, 25% of 19-year-olds, and only 9% of 22-year-old patients were referred to a PS. Multivariate logistic regression demonstrated that diagnosis and physician practice setting also were associated with referral patterns. CONCLUSIONS: Both patient age and PCP specialty were significant predictors of referral patterns in hypothetical vignettes of newly diagnosed adolescent and young adult patients with cancer. Pediatricians were more likely than nonpediatrician PCPs to refer patients to a PS. Referrals to PSs decreased dramatically between ages 16 and 19. Because the site of oncological care can impact outcomes, these data have the potential to inform awareness and education initiatives directed at PCPs.


Asunto(s)
Toma de Decisiones , Neoplasias/terapia , Pediatras/estadística & datos numéricos , Médicos de Atención Primaria/estadística & datos numéricos , Derivación y Consulta/estadística & datos numéricos , Adolescente , Adulto , Factores de Edad , Estudios Transversales , Femenino , Encuestas de Atención de la Salud , Humanos , Masculino , Persona de Mediana Edad , Neoplasias/diagnóstico , North Carolina , Especialización , Washingtón , Adulto Joven
5.
J Clin Oncol ; 35(34): 3830-3836, 2017 Dec 01.
Artículo en Inglés | MEDLINE | ID: mdl-28976795

RESUMEN

Purpose To estimate the prevalence of sperm banking among adolescent males newly diagnosed with cancer and to identify factors associated with banking outcomes. Patients and Methods A prospective, single-group, observational study design was used to test the contribution of sociodemographic, medical, psychological/health belief, communication, and developmental factors to fertility preservation outcomes. At-risk adolescent males (N = 146; age 13.00 to 21.99 years; Tanner stage ≥ 3), their parents, and medical providers from eight leading pediatric oncology centers across the United States and Canada completed self-report questionnaires within 1 week of treatment initiation. Multivariable logistic regression was used to calculate odds ratios (ORs) and 95% CIs for specified banking outcomes (collection attempt v no attempt and successful completion of banking v no banking). Results Among adolescents (mean age, 16.49 years; standard deviation, 2.02 years), 53.4% (78 of 146) made a collection attempt, with 43.8% (64 of 146) successfully banking sperm (82.1% of attempters). The overall attempt model revealed adolescent consultation with a fertility specialist (OR, 29.96; 95% CI, 2.48 to 361.41; P = .007), parent recommendation to bank (OR, 12.30; 95% CI, 2.01 to 75.94; P = .007), and higher Tanner stage (OR, 5.42; 95% CI, 1.75 to 16.78; P = .003) were associated with an increased likelihood of a collection attempt. Adolescent history of masturbation (OR, 5.99; 95% CI, 1.25 to 28.50; P = .025), banking self-efficacy (OR, 1.23; 95% CI, 1.05 to 1.45; P = .012), and parent (OR, 4.62; 95% CI, 1.46 to 14.73; P = .010) or medical team (OR, 4.26; 95% CI, 1.45 to 12.43; P = .008) recommendation to bank were associated with increased likelihood of sperm banking completion. Conclusion Although findings suggest that banking is underutilized, modifiable adolescent, parent, and provider factors associated with banking outcomes were identified and should be targeted in future intervention efforts.


Asunto(s)
Actitud Frente a la Salud , Preservación de la Fertilidad/estadística & datos numéricos , Comunicación Interdisciplinaria , Neoplasias/epidemiología , Preservación de Semen/estadística & datos numéricos , Bancos de Esperma/organización & administración , Adolescente , Teorema de Bayes , Canadá , Estudios de Cohortes , Preservación de la Fertilidad/métodos , Personal de Salud/estadística & datos numéricos , Humanos , Modelos Logísticos , Masculino , Cadenas de Markov , Método de Montecarlo , Neoplasias/patología , Neoplasias/terapia , Padres/psicología , Valor Predictivo de las Pruebas , Estudios Prospectivos , Medición de Riesgo , Preservación de Semen/métodos , Factores Socioeconómicos , Sobrevivientes , Estados Unidos , Adulto Joven
6.
Cancer ; 122(7): 988-99, 2016 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-26849003

RESUMEN

Each year, 70,000 adolescents and young adults (AYAs) between ages 15 and 39 years in the United States are diagnosed with cancer. In 2006, a National Cancer Institute (NCI) Progress Review Group (PRG) examined the state of science associated with cancer among AYAs. To assess the impact of the PRG and examine the current state of AYA oncology research, the NCI, with support from the LIVESTRONG Foundation, sponsored a workshop entitled "Next Steps in Adolescent and Young Adult Oncology" on September 16 and 17, 2013, in Bethesda, Maryland. This report summarizes the findings from the workshop, opportunities to leverage existing data, and suggestions for future research priorities. Multidisciplinary teams that include basic scientists, epidemiologists, trialists, biostatisticians, clinicians, behavioral scientists, and health services researchers will be essential for future advances for AYAs with cancer.


Asunto(s)
Oncología Médica/tendencias , Neoplasias , Adolescente , Adulto , Femenino , Humanos , Masculino , National Cancer Institute (U.S.) , Estados Unidos , Adulto Joven
7.
Pediatrics ; 133 Suppl 3: S104-8, 2014 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-24918207

RESUMEN

Adolescents and young adults (AYAs) have lower rates of clinical trial enrollment than younger or older patients with cancer. Multiple approaches to change policy and practice need to be used to improve this statistic. This article examines the option of increasing referral to 3 types of centers that are known to have relatively higher rates of enrollment of AYAs: pediatric cancer centers, AYA oncology programs, and National Cancer Institute-designated cancer centers. There are reasonable challenges to changing referral patterns, and more research, as well as education of those diagnosing AYAs, is required.


Asunto(s)
Ensayos Clínicos como Asunto/métodos , Neoplasias/terapia , Derivación y Consulta , Centros de Atención Secundaria , Adolescente , Ensayos Clínicos como Asunto/estadística & datos numéricos , Ensayos Clínicos como Asunto/tendencias , Humanos , Neoplasias/diagnóstico , Derivación y Consulta/estadística & datos numéricos , Derivación y Consulta/tendencias , Centros de Atención Secundaria/estadística & datos numéricos , Centros de Atención Secundaria/tendencias , Adulto Joven
10.
J Clin Oncol ; 28(32): 4850-7, 2010 Nov 10.
Artículo en Inglés | MEDLINE | ID: mdl-20479411

RESUMEN

Adolescent and young adult (AYA) patients seem to be in a sort of no-man's land, halfway between the two different worlds of pediatric and adult medical oncology and bearing the brunt, in terms of inclusion in clinical trials and quality of professional care, of the lack of integration between these two worlds. This article discusses the different organization models of care used in pediatric oncology (mainly family-focused) and in adult medical oncology (disease-focused). There is a growing awareness that these models are not ideally suited to the complex needs of AYA patients, which require a different, new, patient-focused multidisciplinary approach. A comprehensive, multipronged effort is required to bridge the gap in the care of AYA patients, with the ultimate challenge of creating a new discipline, AYA oncology. In this article, we review the experiences of AYA oncology programs in Europe, North America, and Australia, focusing on similarities and differences in strategy, as well as the major challenges and opportunities faced by these programs. Among the most important factors for the successful establishment of an AYA oncology service are the degree of engagement of both pediatric and adult medical oncologists, the philanthropic support of powerful charities, and the role of dedicated professionals across a range of disciplines in driving the development of services for AYA patients.


Asunto(s)
Oncología Médica/organización & administración , Atención al Paciente , Desarrollo de Programa , Adolescente , Niño , Ensayos Clínicos como Asunto , Atención a la Salud , Humanos , Comunicación Interdisciplinaria , Oncología Médica/economía , Pediatría , Desarrollo de Programa/economía , Investigación , Adulto Joven
11.
Pediatr Blood Cancer ; 52(7): 767-71, 2009 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-19326424

RESUMEN

BACKGROUND: Sunitinib inhibits KIT and other members of the split-kinase-domain family of receptor tyrosine kinases. Sunitinib prolongs survival in adult patients with imatinib-resistant gastrointestinal stromal tumor (GIST). We report the experience with sunitinib in pediatric patients with advanced GIST following failure of imatinib. PROCEDURE: Sunitinib therapy was provided through a treatment-use protocol. Patients were 10-17 years old at enrollment. All patients had GIST resistant to imatinib therapy. Sunitinib was administered daily for 4 weeks in 6-week treatment cycles. KIT and platelet-derived growth factor receptor alpha (PDGFRA) genotyping of tumor tissue were performed. RESULTS: One patient achieved a partial response, five patients had stable disease and one patient had progressive disease on sunitinib. The duration of disease stabilization was between 7 and 21+ months, with a mean of 15 months. Time to tumor progression was longer on sunitinib than on prior imatinib treatment for five of six patients. Two patients experienced grade 3 adverse events. All other adverse events were grade 1-2. None of the five patients tested had mutations in KIT or PDGFRA. CONCLUSION: Sunitinib treatment was associated with substantial initial antitumor activity and acceptable tolerability in this group of pediatric patients with imatinib-resistant GIST.


Asunto(s)
Antineoplásicos/uso terapéutico , Tumores del Estroma Gastrointestinal/tratamiento farmacológico , Indoles/uso terapéutico , Piperazinas/uso terapéutico , Inhibidores de Proteínas Quinasas/uso terapéutico , Pirimidinas/uso terapéutico , Pirroles/uso terapéutico , Adolescente , Benzamidas , Niño , Resistencia a Antineoplásicos , Femenino , Estudios de Seguimiento , Tumores del Estroma Gastrointestinal/genética , Tumores del Estroma Gastrointestinal/metabolismo , Humanos , Mesilato de Imatinib , Masculino , Reacción en Cadena de la Polimerasa , Pronóstico , Proteínas Tirosina Quinasas/antagonistas & inhibidores , Proteínas Proto-Oncogénicas c-kit/genética , Proteínas Proto-Oncogénicas c-kit/metabolismo , Receptor alfa de Factor de Crecimiento Derivado de Plaquetas/genética , Receptor alfa de Factor de Crecimiento Derivado de Plaquetas/metabolismo , Sunitinib , Tasa de Supervivencia , Insuficiencia del Tratamiento , Resultado del Tratamiento
12.
Pediatr Blood Cancer ; 50(5 Suppl): 1094-8, 2008 May.
Artículo en Inglés | MEDLINE | ID: mdl-18360836

RESUMEN

Rapid diagnosis, timely initiation of optimal treatment and good supportive care should be the gold standard for all patients who develop cancer, irrespective of age and where they live. This article reviews the evidence that teenagers/adolescents and young adults may be disadvantaged with regard to access to care. Delays in diagnosis and the reasons for them (patient and professional), low enrolment into clinical trials, suboptimal treatment strategies and place of care are addressed. We must access the voice of the young, address their needs, and involve them more in decisions concerning their own health. Progress is being made slowly in several countries and international collaboration linking patients, health care professionals, governmental and non-governmental agencies is essential. Such international collaboration and focus, with specific research goals are suggested in order to make variation in access to optimal care become a thing of the past.


Asunto(s)
Servicios de Salud del Adolescente/estadística & datos numéricos , Accesibilidad a los Servicios de Salud , Neoplasias/terapia , Adolescente , Adulto , Factores de Edad , Ensayos Clínicos como Asunto/estadística & datos numéricos , Manejo de la Enfermedad , Diagnóstico Precoz , Femenino , Objetivos , Humanos , Cooperación Internacional , Masculino , Neoplasias/diagnóstico , Neoplasias/epidemiología , Neoplasias/psicología , Selección de Paciente , Tasa de Supervivencia , Resultado del Tratamiento
13.
J Clin Oncol ; 25(29): 4616-21, 2007 Oct 10.
Artículo en Inglés | MEDLINE | ID: mdl-17925557

RESUMEN

PURPOSE: Adolescents with cancer may access oncologic care from pediatric or adult medical centers, given overlapping age eligibility. However, some recent data suggest a benefit to adolescents with certain cancers when treated at pediatric centers or on pediatric protocols. We used a population-based registry to determine the site of care of children, adolescents, and young adults (age 0 to 24 years) with newly diagnosed cancer. PATIENTS AND METHODS: From the Utah Cancer Registry 1994 to 2000, new malignant cases in patients aged 0 to 24 years were chosen; data including diagnosis, home ZIP code and sites of oncologic care were abstracted. Distance between home ZIP code and Primary Children's Medical Center (PCMC; Salt Lake City, Utah), the state's sole site of pediatric oncology care, was determined. RESULTS: Sixty-six percent of Utah 15- to 19-year-olds with cancer were never seen by a PCMC oncologist. Even among this narrow age range, utilization of the pediatric center dropped with each additional year of age. Not unexpectedly, few of those with epithelial malignancies in this age group were seen at PCMC. But surprisingly, 47% of the older adolescents with leukemia, 66% with brain tumors, and 71% with lymphoma never saw a pediatric oncologist. After consideration of age and diagnosis, distance the patient lived from PCMC had a negligible effect on the likelihood of an adolescent being seen there. CONCLUSION: The referral of adolescents with cancer to a pediatric oncology center diminishes greatly with age, and is moderately influenced by diagnosis and minimally by distance from center. Further study should investigate reasons for referral patterns, and impact on outcomes.


Asunto(s)
Neoplasias/diagnóstico , Neoplasias/terapia , Adolescente , Adulto , Niño , Preescolar , Femenino , Accesibilidad a los Servicios de Salud , Humanos , Lactante , Recién Nacido , Masculino , Oncología Médica/métodos , Oncología Médica/organización & administración , Medicina , Neoplasias/patología , Sistema de Registros , Especialización , Utah
14.
J Orthop Res ; 24(3): 474-80, 2006 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-16450387

RESUMEN

Synovial sarcoma (SS) is a highly aggressive, periarticular soft tissue sarcoma that causes death in more than half of affected children, adolescents, and young adults. Five- and 10-year survival rates are as low as 36 and 20%, respectively. Bcl-2, a negative regulator of apoptosis, is overexpressed in up to 90% of SS. Increased Bcl-2 expression not only leads to the development of cancer, but also to resistance of many anticancer chemotherapeutic agents. We hypothesized reducing Bcl-2 expression in SS should enhance doxorubicin cytotoxicity. Cell cultures representing two human sarcomas (FU-SY-1 SS and the pleomorphic SW982) and a primary human dermal fibroblast comparator (NHDF) were exposed in vitro to doxorubicin, or to doxorubicin preceded by Bcl-2 (G3139) antisense oligonucleotides, and assayed for cell survival, apoptosis, and modulations in Bcl-2 and Bcl-xL mRNA and protein content. SW982 sarcoma cells proved most susceptible to doxorubicin, while NHDF mesenchymal cells were least sensitive to doxorubicin. Treatment of FU-SY-1 SS with G3139 reduced Bcl-2 mRNA and protein levels, which enhanced doxorubicin-induced cell killing. There was a concurrent reduction in Bcl-xL mRNA following G3139 application in FU-SY-1 and NHDF cultures, but not in SW982. G3139 anti-Bcl-2 intervention sensitized the FU-SY-1 SS to doxorubicin, due to increased apoptosis. G3139 intervention was ineffective in the two non-SS cell lines.


Asunto(s)
Antineoplásicos/farmacología , Apoptosis , Doxorrubicina/farmacología , Oligonucleótidos Antisentido/farmacología , Proteínas Proto-Oncogénicas c-bcl-2/genética , Sarcoma Sinovial/tratamiento farmacológico , Neoplasias de los Tejidos Blandos/tratamiento farmacológico , Línea Celular Tumoral , Supervivencia Celular/efectos de los fármacos , Relación Dosis-Respuesta a Droga , Sinergismo Farmacológico , Regulación Neoplásica de la Expresión Génica/efectos de los fármacos , Humanos , Proteínas Proto-Oncogénicas c-bcl-2/metabolismo , ARN Mensajero/análisis , Reacción en Cadena de la Polimerasa de Transcriptasa Inversa , Sarcoma Sinovial/metabolismo , Sarcoma Sinovial/patología , Neoplasias de los Tejidos Blandos/metabolismo , Neoplasias de los Tejidos Blandos/patología
15.
Curr Treat Options Oncol ; 6(6): 449-59, 2005 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-16242050

RESUMEN

Synovial sarcoma is a unique tumor with substantial promise for biologically targeted therapy. Although it demonstrates moderate chemosensitivity, with approximately 50% response rates to ifosfamide- and doxorubicin-containing regimens, it has a diagnostic translocation and a potentially informative chimeric protein product. Although surgical management remains the cornerstone to effect local control, therapeutic advancements are unlikely to occur by continuing to include advanced cases of synovial sarcomas in trials with other soft tissue sarcomas. Rather, attention should be turned toward prospective molecular targets and development of novel agents to exploit them. Research should be directed at understanding the fusion protein of the X,18 translocation and further validating the role of overexpressed proteins in synovial sarcoma. Meanwhile, carefully designed clinical trials of these agents, with translational correlates, will provide in vivo data to complement the preclinical experience.


Asunto(s)
Antineoplásicos/uso terapéutico , Sarcoma Sinovial , Adolescente , Adulto , Biomarcadores de Tumor/metabolismo , Terapia Combinada , Doxorrubicina/uso terapéutico , Humanos , Ifosfamida/uso terapéutico , Proteínas de Fusión Oncogénica/metabolismo , Pronóstico , Radioterapia , Sarcoma Sinovial/diagnóstico , Sarcoma Sinovial/metabolismo , Sarcoma Sinovial/terapia , Translocación Genética
16.
Clin Orthop Relat Res ; (437): 242-6, 2005 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-16056055

RESUMEN

Fibrosarcoma that metastasizes to the central nervous system has been documented in the literature. However, we know of no recorded case of spread to a major peripheral nerve. We report a unique occurrence of fibrosarcoma with metastatic involvement of the sciatic nerve, and a review of the literature.


Asunto(s)
Fibrosarcoma/secundario , Neoplasias de Cabeza y Cuello/patología , Neoplasias del Sistema Nervioso Periférico/secundario , Nervio Ciático , Biopsia , Terapia Combinada , Resultado Fatal , Femenino , Fibrosarcoma/diagnóstico , Fibrosarcoma/terapia , Estudios de Seguimiento , Neoplasias de Cabeza y Cuello/terapia , Humanos , Imagen por Resonancia Magnética , Persona de Mediana Edad , Neoplasias del Sistema Nervioso Periférico/diagnóstico , Neoplasias del Sistema Nervioso Periférico/terapia
17.
Hematol Oncol Clin North Am ; 19(3): 527-46, vii, 2005 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-15939195

RESUMEN

Adolescents and young adults, caught between the traditionally binary medical systems for children and adults, may be treated variably, depending on which side of the dichotomy they find themselves. As a result, their unique needs may go unmet because they occupy the fringes of the more typical child and adult patient populations. Soft tissue sarcomas in adolescents and young adults are a case in point, spanning the gap between the two fields but focusing on neither. Increasing age seems to be a poor prognosticator for soft tissue sarcomas, but is probably only a marker for other biological variables, patient characteristics, and treatment differences. This article discusses the issues unique to the management of soft tissue sarcomas in this population, pointing out what age-specific data are known and what areas are ripe for collaborative research between medical and pediatric oncologists.


Asunto(s)
Sarcoma/terapia , Neoplasias de los Tejidos Blandos/terapia , Adolescente , Adulto , Ensayos Clínicos como Asunto , Humanos , Estadificación de Neoplasias , Pronóstico , Sarcoma/patología , Neoplasias de los Tejidos Blandos/patología
18.
J Pediatr Hematol Oncol ; 27(4): 219-22, 2005 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-15838395

RESUMEN

Synovial sarcoma is a distinct tumor with unique promise for targeted therapy. It has a diagnostic translocation and a potentially informative fusion protein. It has moderate chemosensitivity, with about 50% response rates to regimens containing ifosfamide and doxorubicin. Therapeutic advances are unlikely to occur by continuing to lump synovial sarcomas in trials with other soft tissue sarcomas and adjusting traditional agents; rather, attention should be turned toward prospective molecular targets and investigation or development of novel agents to exploit them. The SYT-SSX fusion protein that results from the X,18 translocation is an appealing target, as are the proteins overexpressed in synovial sarcoma: bcl-2, EGFR, and HER-2/neu.


Asunto(s)
Sarcoma Sinovial/terapia , Neoplasias de los Tejidos Blandos/terapia , Sistemas de Liberación de Medicamentos , Receptores ErbB/antagonistas & inhibidores , Humanos , Proteínas de Fusión Oncogénica/antagonistas & inhibidores , Proteínas Proto-Oncogénicas c-bcl-2/antagonistas & inhibidores , Receptor ErbB-2/antagonistas & inhibidores , Sarcoma Sinovial/genética , Sarcoma Sinovial/metabolismo , Neoplasias de los Tejidos Blandos/genética , Neoplasias de los Tejidos Blandos/metabolismo
19.
J Cancer Res Clin Oncol ; 131(3): 137-46, 2005 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-15614524

RESUMEN

BACKGROUND: Mesenchymal neoplasia comprises a heterogeneous group of tumors with over 200 benign neoplasms and 100 sarcomas. Currently, tumors are classified using histologic and immunocytologic characteristics, with diagnostic error rates reported as high as 40% of cases. As a feasibility study, our goal was to generate a preliminary discriminatory gene list for selected mesenchymal tumors, including sarcomas. This technique may enable an eventual molecular classification schema based on expression profiles that can complement current clinical and pathologic diagnostic procedures in mesenchymal tumors. METHODS: cDNA microarray analyses were preformed on connective tissue tumors obtained at time of surgical resection or biopsy. Messenger RNA (mRNA) from four general tumor classes was competitively hybridized against a human dermal fibroblast cell line comparator and the resulting gene expression profiles processed by ANOVA and linear discriminate analysis. RESULTS: The tissue classification involved 18 patients with malignant peripheral nerve sheath tumors, giant cell containing tumors, benign spindle cell lesions, or Ewing's family of tumors. Lymph nodes from two patients served comparative purposes. Twenty-five differentially regulated genes considered most variable among the five tissue classes were identified. The tissues were segregated into five classes by linear discriminate analysis. CONCLUSIONS: Linear discriminate analysis of cDNA gene expression profiles partitioned mesenchymal tumor classes, even when constrained by limited sample sizes.


Asunto(s)
Dermatoglifia del ADN , ADN de Neoplasias/análisis , Mesenquimoma/diagnóstico , Mesenquimoma/genética , Neoplasias de Tejido Conjuntivo/diagnóstico , Neoplasias de Tejido Conjuntivo/genética , Análisis de Secuencia por Matrices de Oligonucleótidos , Análisis de Varianza , Carcinoma/diagnóstico , Carcinoma/genética , Carcinoma de Células Gigantes/diagnóstico , Carcinoma de Células Gigantes/genética , Línea Celular , Estudios de Factibilidad , Fibroblastos , Regulación Neoplásica de la Expresión Génica , Humanos , Modelos Lineales , Neoplasias de la Vaina del Nervio/diagnóstico , Neoplasias de la Vaina del Nervio/genética , ARN Mensajero/análisis , ARN Neoplásico/análisis , Sarcoma de Ewing/diagnóstico , Sarcoma de Ewing/genética , Piel/citología
20.
Am J Orthop (Belle Mead NJ) ; 33(12): 602-8, 2004 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-15641745

RESUMEN

Malignant fibrous histiocytoma (MFH) has been regarded as the most common soft-tissue sarcoma of adult life. Since it was first recognized in the early 1960s, however, MFH has been plagued by controversy in terms of both its histogenesis and its validity as a clinicopathologic entity. The latest World Health Organization classification no longer includes MFH as a distinct diagnostic category but rather as subtypes of an undifferentiated pleomorphic sarcoma. In this article, we review the current understanding of the histologic subtype classification of tumors previously diagnosed as MFH and its relation to clinical outcomes.


Asunto(s)
Histiocitoma Fibroso Benigno/patología , Sarcoma/patología , Neoplasias de los Tejidos Blandos/patología , Histiocitoma Fibroso Benigno/clasificación , Histiocitoma Fibroso Benigno/tratamiento farmacológico , Humanos , Pronóstico , Sarcoma/clasificación , Sarcoma/tratamiento farmacológico , Neoplasias de los Tejidos Blandos/clasificación , Neoplasias de los Tejidos Blandos/tratamiento farmacológico
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