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1.
Cancer ; 129(10): 1479-1491, 2023 05 15.
Artigo em Inglês | MEDLINE | ID: mdl-36907983

RESUMO

The diagnosis of cancer is increasingly made in the pregnant population, thought to be from the increasing average age of pregnancy and the use of prenatal fetal noninvasive screening techniques, leading to incidental detection of cancer in the mother. Complex challenges are associated with imaging, diagnosis, staging, and treatment of cancers in this patient population, which require highly specialized interdisciplinary management. This report discusses the use of multimodality imaging and safety considerations in pregnant patients, reviews the current guidelines for ionizing radiation imaging techniques, and presents a series of commonly and uncommonly encountered cancers in pregnancy with current diagnostic imaging guidelines. The authors also discuss the role of multidisciplinary management and treatment options and provide an overview of therapy-related considerations in the age of novel anticancer therapies. PLAIN LANGUAGE SUMMARY: The diagnosis and management of pregnant patients who have cancer are actively evolving as novel imaging techniques and anticancer therapies are being developed. Radiologically, there are inherent difficulties in balancing the minimization of fetal ionization while acquiring diagnostic quality imaging necessary for the diagnosis, staging, and treatment of maternal disease. Standardized imaging protocols are still being developed, with evolving imaging guidelines coupled with rapidly expanding research and development of novel anticancer therapies, which come with their side effects and complications. Caring for this patient population is especially challenging and requires specialized multidisciplinary attention.


Assuntos
Neoplasias , Gravidez , Feminino , Humanos , Diagnóstico por Imagem
2.
J Cutan Pathol ; 50(1): 47-50, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36039682

RESUMO

Epidermodysplasia verruciformis (EDV) is a rare genodermatosis that predisposes individuals to persistent infection with ß-human papillomavirus (HPV) genotypes. The term EDV acanthoma may be applied to lesions with incidental findings of EDV-defining histopathological features without clinical signs of EDV. We report a case of HPV-14- and -21-positive EDV acanthoma arising in association with condyloma in a female patient with a history of low-grade squamous intraepithelial lesion of the cervix positive for high-risk HPV (non-16/18), chronic kidney disease, and systemic lupus erythematosus. The patient had no family or personal history of EDV, but the patient was on immunosuppressive therapy with mycophenolate mofetil and prednisone. A biopsy specimen from one of the perianal lesions revealed histopathologic changes consistent with EDV in the setting of condyloma. Molecular testing showed HPV-14 and -21, which supported the coexistence of condyloma with EDV acanthoma.


Assuntos
Acantoma , Condiloma Acuminado , Epidermodisplasia Verruciforme , Infecções por Papillomavirus , Neoplasias Cutâneas , Humanos , Feminino , Acantoma/complicações , Papillomavirus Humano , Epidermodisplasia Verruciforme/complicações , Epidermodisplasia Verruciforme/patologia , Infecções por Papillomavirus/patologia , Condiloma Acuminado/complicações , Papillomaviridae , Neoplasias Cutâneas/complicações
3.
Am J Obstet Gynecol ; 224(2): 191.e1-191.e15, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-32805208

RESUMO

BACKGROUND: The incidence of complex atypical hyperplasia and early-stage endometrioid endometrial cancer is increasing, in part owing to the epidemic of obesity, which is a risk factor tightly linked to the development of endometrial hyperplasia and cancer. The standard upfront treatment for complex atypical hyperplasia and early-stage endometrial cancer is hysterectomy. However, nonsurgical treatment of early-stage endometrial neoplasia may be necessary owing to medical comorbidities precluding surgery or desired future fertility. OBJECTIVE: This study aimed to evaluate the efficacy of the levonorgestrel intrauterine device to treat complex atypical hyperplasia and grade 1 endometrioid endometrial carcinoma. STUDY DESIGN: A single-institution, single-arm, phase II study of the levonorgestrel intrauterine device (52 mg levonorgestrel, Mirena) was conducted in patients with complex atypical hyperplasia or grade 1 endometrioid endometrial cancer. The primary endpoint was pathologic response rate at 12 months, including complete or partial response. Quality of life and toxicity were assessed. Molecular analyses for proliferation markers, hormone-regulated genes, and wingless-related integration site pathway activation were performed at baseline and 3 months. RESULTS: A total of 57 patients were treated (21 endometrial cancer, 36 complex atypical hyperplasia). The median age was 48.0 years, and the median body mass index was 45.5 kg/m2. Of the 47 evaluable patients, 12-month response rate was 83% (90% credible interval, 72.7-90.3)-37 were complete responders (8 endometrial cancer; 29 complex atypical hyperplasia), 2 were partial responders (2 endometrial cancer), 3 had stable disease (2 endometrial cancer; 1 complex atypical hyperplasia), and 5 had progressive disease (3 endometrial cancer; 2 complex atypical hyperplasia). After stratification for histology, the response rate was 90.6% for complex atypical hyperplasia and 66.7% for grade 1 endometrioid endometrial cancer. Notably, 4 patients (9.5%) experienced relapse after the initial response. Adverse events were mild, primarily irregular bleeding and cramping. Quality of life was not negatively affected. At 3 months, exogenous progesterone effect was present in 96.9% of responders (31 of 32) vs 25% of nonresponders (2 of 8) (P=.001). Nonresponders had higher baseline proliferation (Ki67) and lower dickkopf homolog 3 gene expression than responders (P=.023 and P=.030). Nonresponders had significantly different changes in secreted frizzled-related protein 1, frizzled class receptor 8, and retinaldehyde dehydrogenase 2 compared with responders. CONCLUSION: The levonorgestrel intrauterine device has a substantial activity in complex atypical hyperplasia and grade 1 endometrioid endometrial cancer, with a modest proportion demonstrating upfront progesterone resistance. Potential biomarkers were identified that may correlate with resistance to therapy; further exploration is warranted.


Assuntos
Carcinoma Endometrioide/tratamento farmacológico , Contraceptivos Hormonais/administração & dosagem , Hiperplasia Endometrial/tratamento farmacológico , Neoplasias do Endométrio/tratamento farmacológico , Dispositivos Intrauterinos Medicados , Levanogestrel/administração & dosagem , Proteínas Adaptadoras de Transdução de Sinal/genética , Proteínas Adaptadoras de Transdução de Sinal/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Família Aldeído Desidrogenase 1/genética , Família Aldeído Desidrogenase 1/metabolismo , Biomarcadores/metabolismo , Biomarcadores Tumorais/metabolismo , Índice de Massa Corporal , Carcinoma Endometrioide/metabolismo , Carcinoma Endometrioide/patologia , Hiperplasia Endometrial/metabolismo , Hiperplasia Endometrial/patologia , Neoplasias do Endométrio/metabolismo , Neoplasias do Endométrio/patologia , Feminino , Expressão Gênica , Humanos , Peptídeos e Proteínas de Sinalização Intercelular/genética , Peptídeos e Proteínas de Sinalização Intercelular/metabolismo , Antígeno Ki-67/genética , Antígeno Ki-67/metabolismo , Proteínas de Membrana/genética , Proteínas de Membrana/metabolismo , Pessoa de Meia-Idade , Gradação de Tumores , Estadiamento de Neoplasias , Qualidade de Vida , Receptores de Superfície Celular/genética , Receptores de Superfície Celular/metabolismo , Retinal Desidrogenase/genética , Retinal Desidrogenase/metabolismo , Resultado do Tratamento , Via de Sinalização Wnt/genética , Adulto Jovem
4.
Gynecol Oncol ; 153(2): 266-270, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30827725

RESUMO

OBJECTIVE: To estimate the prevalence of high-grade anal dysplasia in women with high-grade dysplasia or carcinoma of the cervix, vagina or vulva. METHODS: In this cross-sectional study, participants underwent anal cytology, anal HPV testing with Cervista HPV16/18 and high-resolution anoscopy (HRA). Patients with HSIL (high-grade squamous cell intraepithelial lesion) or greater on anal cytology or anal biopsy were referred to a colorectal surgery specialist for further evaluation. RESULTS: Seventy-five women were enrolled in the study, including 47 with cervical (cervix group), 10 with vaginal (vagina group), 15 with vulvar (vulva group), 1 with cervical and vaginal, and 2 with vulvar and vaginal disease. The median age in the cervix group (40 years (range 26-69)) was substantially younger than in the vagina (60 years (38-69)) and the vulva (59 years (36-75)) groups. Anal HSIL based on composite endpoints of the most severe cytology or histology result was diagnosed in 6 patients (8.0%). Anal cytology revealed HSIL in 2 (2.7%), atypical squamous cells of undetermined significance (ASCUS) in 12 (16.0%), low-grade squamous cell intraepithelial lesion (LSIL) in 2 (2.7%), and was normal in 59 (78.7%) patients. Anal HPV16/18 test was positive in 15 (20.0%), negative in 48 (64.0%) and insufficient in 12 (16.0%) patients. Of the 6 women with high-grade anal dysplasia, three (50%) had a positive anal HPV16/18 test. No case of anal cancer was observed. CONCLUSION: Our results suggest that the prevalence of anal HSIL is elevated among women with HPV-related lower genital tract dysplasia or cancer. To further support the inclusion of this high-risk group into screening guidelines for anal dysplasia, further studies are necessary to determine what screening strategy is suited to this population.


Assuntos
Canal Anal/patologia , Neoplasias dos Genitais Femininos/epidemiologia , Papillomaviridae/isolamento & purificação , Infecções por Papillomavirus/epidemiologia , Lesões Intraepiteliais Escamosas Cervicais/epidemiologia , Adulto , Fatores Etários , Idoso , Canal Anal/diagnóstico por imagem , Canal Anal/virologia , Estudos Transversais , Endoscopia Gastrointestinal , Feminino , Neoplasias dos Genitais Femininos/patologia , Neoplasias dos Genitais Femininos/virologia , Genitália Feminina/patologia , Genitália Feminina/virologia , Humanos , Pessoa de Meia-Idade , Infecções por Papillomavirus/diagnóstico por imagem , Infecções por Papillomavirus/patologia , Infecções por Papillomavirus/virologia , Projetos Piloto , Prevalência , Fatores de Risco , Lesões Intraepiteliais Escamosas Cervicais/patologia , Lesões Intraepiteliais Escamosas Cervicais/virologia
5.
Gynecol Oncol ; 154(3): 558-564, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-31288949

RESUMO

OBJECTIVE: Cervical cancer rates in the United States have declined since the 1940's, however, cervical cancer incidence remains elevated in medically-underserved areas, especially in the Rio Grande Valley (RGV) along the Texas-Mexico border. High-resolution microendoscopy (HRME) is a low-cost, in vivo imaging technique that can identify high-grade precancerous cervical lesions (CIN2+) at the point-of-care. The goal of this study was to evaluate the performance of HRME in medically-underserved areas in Texas, comparing results to a tertiary academic medical center. METHODS: HRME was evaluated in five different outpatient clinical settings, two in Houston and three in the RGV, with medical providers of varying skill and training. Colposcopy, followed by HRME imaging, was performed on eligible women. The sensitivity and specificity of traditional colposcopy and colposcopy followed by HRME to detect CIN2+ were compared and HRME image quality was evaluated. RESULTS: 174 women (227 cervical sites) were included in the final analysis, with 12% (11% of cervical sites) diagnosed with CIN2+ on histopathology. On a per-site basis, a colposcopic impression of low-grade precancer or greater had a sensitivity of 84% and a specificity of 45% to detect CIN2+. While there was no significant difference in sensitivity (76%, p = 0.62), the specificity when using HRME was significantly higher than that of traditional colposcopy (56%, p = 0.01). There was no significant difference in HRME image quality between clinical sites (p = 0.77) or medical providers (p = 0.33). CONCLUSIONS: HRME imaging increased the specificity for detecting CIN2+ when compared to traditional colposcopy. HRME image quality remained consistent across different clinical settings.


Assuntos
Colonoscopia/economia , Colonoscopia/métodos , Área Carente de Assistência Médica , Lesões Pré-Cancerosas/diagnóstico por imagem , Neoplasias do Colo do Útero/diagnóstico por imagem , Feminino , Humanos , Processamento de Imagem Assistida por Computador , Gradação de Tumores , Lesões Pré-Cancerosas/economia , Estudos Prospectivos , Sensibilidade e Especificidade , Texas , Estados Unidos , Neoplasias do Colo do Útero/patologia , Displasia do Colo do Útero/diagnóstico por imagem , Displasia do Colo do Útero/economia
6.
BMC Cancer ; 18(1): 375, 2018 04 03.
Artigo em Inglês | MEDLINE | ID: mdl-29614979

RESUMO

BACKGROUND: With ongoing healthcare reform and shrinking numbers of oncologists, appropriate triaging of gynecologic cancer survivor care is crucial. Input from patients is a necessary part of this task. The objective of this study was to assess the preferences of gynecologic cancer survivors for surveillance after the completion of treatment. METHODS: A 38-item questionnaire was developed and launched in conjunction with the Foundation for Women's Cancer (FWC). All women who registered as gynecologic cancer survivors with the FWC were invited to participate. Patients were asked about physician preferences for multiple symptoms and diagnoses, and when they felt comfortable transferring care out of their oncologists' offices. Analyses were performed with chi-square and logistic regression. RESULTS: Six hundred twenty four patients completed the questionnaire. Sixty six percent had ovarian cancer, and 86% were primarily treated by a gynecologic oncologist. Fifty seven percent of the respondents reported being unwilling to see a physician other than their oncologist for survivorship care at any time. Women age > 60 years were less willing to leave their oncologists for survivorship care at any time compared to younger women (OR 1.53 [95% CI 1.03-2.27], p = 0.03). Ovarian cancer survivors were also more likely to report a desire to stay with their oncologists compared with uterine cancer survivors (p < 0.001). With few exceptions, respondents preferred management of non-oncologic medical problems by their oncologists. CONCLUSIONS: Gynecologic cancer survivors prefer that their oncologists remain heavily involved in survivorship care. Reconciling patient needs with physician and financial constraints will be a challenge as the survivor population continues to grow.


Assuntos
Sobreviventes de Câncer , Neoplasias dos Genitais Femininos/epidemiologia , Neoplasias dos Genitais Femininos/psicologia , Necessidades e Demandas de Serviços de Saúde , Preferência do Paciente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Neoplasias dos Genitais Femininos/diagnóstico , Humanos , Pessoa de Meia-Idade , Vigilância da População , Padrões de Prática Médica , Inquéritos e Questionários , Adulto Jovem
7.
Gynecol Oncol ; 139(3): 500-5, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26498912

RESUMO

BACKGROUND: The purpose was to identify barriers including logistical and health belief correlates of late stage presentation of cervical cancer (CxCa) among medically underserved women presenting to a safety net health care system. METHODS: Women presenting with newly diagnosed CxCa were asked to complete a detailed health belief survey that included questions about barriers to care and their knowledge of CxCa. All information was collected prior to initiating cancer treatment. Comparisons were made among women diagnosed at early stages of disease amendable to surgical treatment (≤IB1) and those diagnosed at a stage requiring local-regional or systemic/palliative treatment (≥IB2). RESULTS: Among the 138 women, 21.7% were diagnosed with ≤lB1 disease, while 78.3% were diagnosed with ≥IB2 disease. Late-stage diagnosis was associated with a greater number of emergency room (ER) visits (p<.001) and blood transfusions (p<.001) prior to diagnosis. Compared to 88% with ≤lB1 disease, only 53% of patients with ≥IB2 disease had a car (p=.003). Women with ≥IB2 disease were more likely to be without a primary care provider (75.0% vs. 42.3%, p=.001). CONCLUSION: Access to transportation and lack of a regular primary care provider or a medical home are associated with late-stage of CxCa at diagnosis. Many medically underserved women continue to use the ER as their primary source of health care, and as a result their CxCa is diagnosed in advanced stages, with higher medical costs and lower chances of cure. The lack of Medicaid expansion in Texas may result in a worsening of this situation.


Assuntos
Conhecimentos, Atitudes e Prática em Saúde , Acessibilidade aos Serviços de Saúde , Disparidades em Assistência à Saúde , Aceitação pelo Paciente de Cuidados de Saúde/psicologia , Atenção Primária à Saúde/estatística & dados numéricos , Neoplasias do Colo do Útero/patologia , Populações Vulneráveis/estatística & dados numéricos , Adulto , Idoso , Automóveis/estatística & dados numéricos , Transfusão de Sangue/estatística & dados numéricos , Diagnóstico Tardio , Serviço Hospitalar de Emergência/estatística & dados numéricos , Medo , Feminino , Letramento em Saúde , Humanos , Controle Interno-Externo , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Estudos Prospectivos , Provedores de Redes de Segurança , Inquéritos e Questionários , Texas , Fatores de Tempo , Neoplasias do Colo do Útero/economia , Neoplasias do Colo do Útero/psicologia , Populações Vulneráveis/psicologia , Adulto Jovem
8.
Breast Cancer Res ; 16(6): 500, 2014 Dec 30.
Artigo em Inglês | MEDLINE | ID: mdl-25547133

RESUMO

INTRODUCTION: The incidence of breast cancer diagnosed during pregnancy is expected to increase as more women delay childbearing in the United States. Treatment of cancer in pregnant women requires prudent judgment to balance the benefit to the cancer patient and the risks to the fetus. Prospective data on the outcomes of children exposed to chemotherapy in utero are limited for the breast cancer population. METHODS: Between 1992 and 2010, 81 pregnant patients with breast cancer were treated in a single-arm, institutional review board-approved study with 5-fluorouracil, doxorubicin, and cyclophosphamide (FAC) in the adjuvant or neoadjuvant setting. Labor and delivery records were reviewed for each patient and neonate. In addition, the parents or guardians were surveyed regarding the health outcomes of the children exposed to chemotherapy in utero. RESULTS: In total, 78% of the women (or next of kin) answered a follow-up survey. At a median age of 7 years, most of the children exposed to chemotherapy in utero were growing normally without any significant exposure-related toxicity or health problems. Three children were born with congenital abnormalities: one each with Down syndrome, ureteral reflux or clubfoot. The rate of congenital abnormalities in the cohort was similar to the national average of 3%. CONCLUSIONS: During the second and third trimesters, pregnant women with breast cancer can be treated with FAC safely without concerns for serious complications or short-term health concerns for their offspring who are exposed to chemotherapy in utero. Continued long-term follow-up of the children in this cohort is required. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT00510367. Other Study ID numbers: ID01-193, NCI-2012-01578. Registration date: 31 July 2007.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias da Mama/tratamento farmacológico , Anormalidades Congênitas/epidemiologia , Complicações Neoplásicas na Gravidez/tratamento farmacológico , Efeitos Tardios da Exposição Pré-Natal/epidemiologia , Adulto , Criança , Pé Torto Equinovaro/epidemiologia , Ciclofosfamida/uso terapêutico , Síndrome de Down/epidemiologia , Doxorrubicina/uso terapêutico , Feminino , Fluoruracila/uso terapêutico , Humanos , Recém-Nascido , Masculino , Gravidez , Estudos Retrospectivos , Refluxo Vesicoureteral/epidemiologia
9.
Cancer Cytopathol ; 132(3): 152-160, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38054363

RESUMO

BACKGROUND: To evaluate the efficacy of Cobas human papillomavirus (HPV) testing to predict cervical intraepithelial neoplasia of grade 2 or higher (CIN2+), Cobas HPV testing results were correlated with follow-up biopsy in patients from Cancer Prevention Center (CPC) and Gynecologic Oncology Clinic (GOC) of The University of Texas MD Anderson Cancer Center. METHODS: Institutional data for patients who underwent Cobas HPV and Papanicolaou (Pap) cytology cotesting from 2019 to 2020 were retrospectively reviewed. Surgical follow-up results were compared with Cobas HPV testing results in two populations. RESULTS: A total of 2226 patients, including 921 women (mean age, 55.2 years) seen at the CPC and 1305 women (mean age, 49.3 years) seen at the GOC, were included. Specimens from GOC patients had a significantly higher HPV positivity rate than did those from CPC patients (22.9% vs. 10.1%; p < .001). Cobas HPV testing was positive in all seven CPC patients with surgical follow-up results showing CIN2+. Among 36 GOC patients with CIN2+ lesions, five patients had HPV-/Pap+ testing results. Although only seven CPC patients had CIN2+, Cobas HPV testing showed 100% sensitivity for predicting CIN2+ in this group. Sensitivity for CIN2+ was 86.5% in the GOC group, whereas 13.9% of GOC patients with CIN2+ had negative HPV testing results. CONCLUSIONS: Cobas HPV testing was highly efficacious for predicting CIN2+ lesions in the low-risk CPC population, which supports HPV primary screening for cervical cancer in low-risk populations. For high-risk patients, especially those with a history of CIN2+/cervical cancer, HPV/Pap cotesting may still be necessary to maintain a high clinical sensitivity for CIN2+.


Assuntos
Neoplasias dos Genitais Femininos , Infecções por Papillomavirus , Displasia do Colo do Útero , Neoplasias do Colo do Útero , Feminino , Humanos , Pessoa de Meia-Idade , Esfregaço Vaginal , Estudos Retrospectivos , Infecções por Papillomavirus/complicações , Infecções por Papillomavirus/diagnóstico , Infecções por Papillomavirus/epidemiologia , Displasia do Colo do Útero/diagnóstico , Instituições de Assistência Ambulatorial , Papillomaviridae , Detecção Precoce de Câncer/métodos
10.
Gynecol Oncol ; 129(3): 513-6, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23541795

RESUMO

OBJECTIVE: Cervical adenocarcinoma in situ (AIS) is increasing in incidence among reproductive-age women. Cervical conization is an alternative to hysterectomy that allows future fertility, however reports regarding the risk of residual AIS and underlying adenocarcinoma are conflicting. The purpose of this study was to determine the outcomes of a large cohort of women treated for AIS. METHODS: The medical records of 180 women with cervical AIS evaluated at the University of Texas MD Anderson Cancer Center and its outlying clinics between 1983 and 2011 were reviewed for demographic information, treatment history, pathologic findings and outcomes. RESULTS: The mean age at diagnosis was 33.8years (range 17.6-76.1years). 172 of the 180 women had at least one cone biopsy performed, with 110 (64.0%) undergoing a cold knife cone (CKC), and 62 (36.0%) undergoing a loop electrosurgical excision procedure (LEEP) as their initial method of treatment. Positive margins were noted in 35.0% of patients undergoing CKC compared with 55.6% undergoing LEEP (p=0.017). 71 patients ultimately underwent hysterectomy with residual disease noted in 10 patients (14.1%), 8 patients (11.3%) with residual AIS and 2 patients (2.8%) with invasive carcinoma. Of the 101 patients who did not undergo hysterectomy, 2 patients (2.0%) developed recurrent AIS at a median of 27.5months (range 18-37months) from the last cone, and none developed invasive carcinoma. CONCLUSION: Patients undergoing conservative management for AIS with cervical conization alone should be monitored closely and counseled regarding the potential risks of residual and recurrent disease, even when negative cone margins are obtained.


Assuntos
Adenocarcinoma/patologia , Adenocarcinoma/cirurgia , Carcinoma in Situ/patologia , Carcinoma in Situ/cirurgia , Neoplasias do Colo do Útero/patologia , Neoplasias do Colo do Útero/cirurgia , Adolescente , Adulto , Idoso , Estudos de Coortes , Conização/métodos , Criocirurgia/métodos , Eletrocirurgia/métodos , Feminino , Humanos , Histerectomia , Pessoa de Meia-Idade , Invasividade Neoplásica , Neoplasia Residual , Fatores de Risco , Resultado do Tratamento , Adulto Jovem
11.
Biomed Opt Express ; 14(10): 5097-5112, 2023 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-37854554

RESUMO

Characterization of microvascular changes during neoplastic progression has the potential to assist in discriminating precancer and early cancer from benign lesions. Here, we introduce a novel high-resolution microendoscope that leverages scanning darkfield reflectance imaging to characterize angiogenesis without exogenous contrast agents. Scanning darkfield imaging is achieved by coupling programmable illumination with a complementary metal-oxide semiconductor (CMOS) camera rolling shutter, eliminating the need for complex optomechanical components and making the system portable, low-cost (<$5,500) and simple to use. Imaging depth is extended by placing a gradient-index (GRIN) lens at the distal end of the imaging fiber to resolve subepithelial microvasculature. We validated the capability of the scanning darkfield microendoscope to visualize microvasculature at different anatomic sites in vivo by imaging the oral cavity of healthy volunteers. Images of cervical specimens resected for suspected neoplasia reveal distinct microvascular patterns in columnar and squamous epithelium with different grades of precancer, indicating the potential of scanning darkfield microendoscopy to aid in efforts to prevent cervical cancer through early diagnosis.

12.
Prev Med Rep ; 36: 102486, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38021412

RESUMO

Although cervical cancer is preventable, significant disparities exist in access to screening and prevention services. In medically underserved areas (MUAs) of Texas, these rates are 55% higher compared to the remainder of the US. In 2019, we expanded a multicomponent, comprehensive program to improve cervical cancer prevention in partnership with 13 clinics and mobile vans in MUAs of Texas. Our multicomponent intervention program consists of community education and patient navigation coupled with a training/mentoring program for local medical providers to perform diagnostic procedures and treatment for patients with abnormal screening results. Hands-on training courses to learn these skills are coupled with biweekly telementoring conferences using Project ECHO® (Extension for Community Healthcare Outcomes). This program was implemented in 2015 and expanded to other MUAs in Texas in 2019. From March 2019 to August 2022, 75,842 individuals were educated about cervical cancer screening and HPV vaccination. A total of 44,781 women underwent screening for cervical cancer, and 2,216 underwent colposcopy and 264 underwent LEEP. High-grade cervical dysplasia was diagnosed in 658 individuals and invasive cervical cancer in 33 individuals. We trained 22 providers to perform colposcopy and/or LEEP. In addition, 78 Project ECHO telementoring sessions were held with an average of 42 attendees per session, with 72 individual patient cases discussed. Our comprehensive community-based prevention initiative for medically underserved populations has led to a significant number of individuals undergoing cervical cancer screening in MUAs, as well as improved access to colposcopy and LEEP services.

13.
Front Immunol ; 14: 1051431, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37063829

RESUMO

Background: Squamous cell carcinoma of the anus (SCCA) is a rare gastrointestinal cancer. Factors associated with progression of HPV infection to anal dysplasia and cancer are unclear and screening guidelines and approaches for anal dysplasia are less clear than for cervical dysplasia. One potential contributing factor is the anorectal microbiome. In this study, we aimed to identify differences in anal microbiome composition in the settings of HPV infection, anal dysplasia, and anal cancer in this rare disease. Methods: Patients were enrolled in two prospective studies. Patients with anal dysplasia were part of a cross-sectional cohort that enrolled women with high-grade lower genital tract dysplasia. Anorectal tumor swabs were prospectively collected from patients with biopsy-confirmed locally advanced SCCA prior to receiving standard-of-care chemoradiotherapy (CRT). Patients with high-grade lower genital tract dysplasia without anal dysplasia were considered high-risk (HR Normal). 16S V4 rRNA Microbiome sequencing was performed for anal swabs. Alpha and Beta Diversity and composition were compared for HR Normal, anal dysplasia, and anal cancer. Results: 60 patients with high-grade lower genital tract dysplasia were initially enrolled. Seven patients had concurrent anal dysplasia and 44 patients were considered HR Normal. Anorectal swabs from 21 patients with localized SCCA were included, sequenced, and analyzed in the study. Analysis of weighted and unweighted UniFrac distances demonstrated significant differences in microbial community composition between anal cancer and HR normal (p=0.018). LEfSe identified that all three groups exhibited differential enrichment of specific taxa. Peptoniphilus (p=0.028), Fusobacteria (p=0.0295), Porphyromonas (p=0.034), and Prevotella (p=0.029) were enriched in anal cancer specimens when compared to HR normal. Conclusion: Although alpha diversity was similar between HR Normal, dysplasia and cancer patients, composition differed significantly between the three groups. Increased anorectal Peptoniphilus, Fusobacteria, Porphyromonas, and Prevotella abundance were associated with anal cancer. These organisms have been reported in various gastrointestinal cancers with roles in facilitating the proinflammatory microenvironment and neoplasia progression. Future work should investigate a potential role of microbiome analysis in screening for anal dysplasia and investigation into potential mechanisms of how these microbial imbalances influence the immune system and anal carcinogenesis.


Assuntos
Neoplasias do Ânus , Carcinoma de Células Escamosas , Microbiota , Infecções por Papillomavirus , Humanos , Feminino , Estudos Prospectivos , Estudos Transversais , Carcinoma de Células Escamosas/complicações , Microambiente Tumoral
14.
Oncologist ; 17(2): 233-8, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22282904

RESUMO

PURPOSE: Premature ovarian failure occurs in 40%-70% of patients who receive conventional chemotherapy alone. However, the incidence is higher, 70%-100%, in patients who undergo myeloablative chemotherapy with hematopoietic stem cell transplantation (HSCT). Gonadotropin-releasing hormone (GnRH) analogs, such as leuprolide, in a continuous-release formulation, may protect the ovaries from the gonadotoxic effects of chemotherapy. In non-HSCT settings, GnRH analogs have reduced the risk for premature ovarian failure to <10%. We conducted a phase II clinical trial based on the hypothesis that giving leuprolide before conditioning chemotherapy in HSCT patients reduces premature ovarian failure incidence. PATIENTS AND METHODS: Eligible patients were women aged ≤40 years who were HSCT candidates, were premenopausal, and had both follicle-stimulating hormone (FSH) and luteinizing hormone (LH) levels ≤20 IU/L. Two 22.5-mg leuprolide doses were delivered in 3-month depot i.m. injections, the first within 2 months before HSCT. Patients were monitored for menstruation return, and ovarian function tests (FSH, LH, and estradiol) were done every 2 months starting 90 days after the last leuprolide dose. RESULTS: Sixty eligible patients were enrolled, 59 underwent HSCT, and 44 were evaluable (median age, 25 years; median follow-up, 355 days). Only seven of 44 patients (16%) regained ovarian function. Of the 33 who received myeloablative regimens, six (18%) regained ovarian function. However, among the 11 who received nonmyeloablative regimens, only one (9%) regained ovarian function (p = .66). CONCLUSION: Leuprolide did not preserve ovarian function in patients who underwent HSCT using either myeloablative or nonmyeloablative regimens. Other measures that protect ovarian function need to be investigated.


Assuntos
Transplante de Células-Tronco Hematopoéticas , Leuprolida/uso terapêutico , Ovário/efeitos dos fármacos , Insuficiência Ovariana Primária/prevenção & controle , Adolescente , Adulto , Feminino , Humanos , Leuprolida/efeitos adversos , Ovário/fisiopatologia , Insuficiência Ovariana Primária/epidemiologia
15.
Cancer Epidemiol Biomarkers Prev ; 31(12): 2185-2191, 2022 12 05.
Artigo em Inglês | MEDLINE | ID: mdl-36126275

RESUMO

BACKGROUND: High-risk human papillomavirus (HR-HPV) infection is a risk factor for anal cancer, yet no anal cancer screening guidelines exist for women with lower genital tract HPV-related disease. We sought to describe the prevalence of anal HR-HPV or cytologic abnormalities in such women. METHODS: This cross-sectional study was performed between October 2018 and December 2021. Inclusion criteria were ≥21 years of age and a prior diagnosis of high-grade dysplasia/cancer of the cervix, vagina, or vulva. Participants underwent anal cytology and anal/cervicovaginal HR-HPV testing. Women with abnormal anal cytology were referred for high-resolution anoscopy (HRA). RESULTS: 324 evaluable women were enrolled. Primary diagnosis was high-grade dysplasia/cancer of the cervix (77%), vagina (9%), and vulva (14%). Anal HR-HPV was detected in 92 patients (28%) and included HPV-16 in 24 (26%), HPV-18 in 6 (7%), and other HR-HPV types in 72 (78%) patients. Anal cytology was abnormal in 70 patients (23%) and included atypical squamous cells of undetermined significance (80%), low-grade squamous intraepithelial lesion (9%), high-grade intraepithelial lesion (HSIL; 1%), and atypical squamous cells-cannot rule out HSIL (10%). Of these patients, 55 (79%) underwent HRA. Anal biopsies were performed in 14 patients: 2 patients had anal intraepithelial neoplasia (AIN) 2/3, 1 patient had AIN 1, and 11 patients had negative biopsies. Both patients with AIN 2/3 had a history of cervical dysplasia. CONCLUSIONS: Our results suggest an elevated risk of anal HR-HPV infection and cytologic abnormalities in women with lower genital tract dysplasia/cancer. IMPACT: These results add to the growing body of evidence suggesting the need for evaluation of screening methods for anal dysplasia/cancer in this patient population to inform evidence-based screening recommendations.


Assuntos
Doenças do Ânus , Neoplasias do Ânus , Carcinoma in Situ , Infecções por Papillomavirus , Lesões Intraepiteliais Escamosas , Neoplasias do Colo do Útero , Neoplasias Vulvares , Humanos , Feminino , Estudos Transversais , Papillomaviridae , Infecções por Papillomavirus/complicações , Infecções por Papillomavirus/epidemiologia , Infecções por Papillomavirus/diagnóstico , Prevalência , Neoplasias do Colo do Útero/diagnóstico , Neoplasias do Colo do Útero/epidemiologia , Neoplasias do Ânus/diagnóstico , Doenças do Ânus/epidemiologia , Neoplasias Vulvares/epidemiologia , Carcinoma in Situ/epidemiologia , Vagina/patologia
16.
Int J Cancer ; 128(5): 1151-68, 2011 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-20830707

RESUMO

Testing emerging technologies involves the evaluation of biologic plausibility, technical efficacy, clinical effectiveness, patient satisfaction, and cost-effectiveness. The objective of this study was to select an effective classification algorithm for optical spectroscopy as an adjunct to colposcopy and obtain preliminary estimates of its accuracy for the detection of CIN 2 or worse. We recruited 1,000 patients from screening and prevention clinics and 850 patients from colposcopy clinics at two comprehensive cancer centers and a community hospital. Optical spectroscopy was performed, and 4,864 biopsies were obtained from the sites measured, including abnormal and normal colposcopic areas. The gold standard was the histologic report of biopsies, read 2 to 3 times by histopathologists blinded to the cytologic, histopathologic, and spectroscopic results. We calculated sensitivities, specificities, receiver operating characteristic (ROC) curves, and areas under the ROC curves. We identified a cutpoint for an algorithm based on optical spectroscopy that yielded an estimated sensitivity of 1.00 [95% confidence interval (CI) = 0.92-1.00] and an estimated specificity of 0.71 [95% CI = 0.62-0.79] in a combined screening and diagnostic population. The positive and negative predictive values were 0.58 and 1.00, respectively. The area under the ROC curve was 0.85 (95% CI = 0.81-0.89). The per-patient and per-site performance were similar in the diagnostic and poorer in the screening settings. Like colposcopy, the device performs best in a diagnostic population. Alternative statistical approaches demonstrate that the analysis is robust and that spectroscopy works as well as or slightly better than colposcopy for the detection of CIN 2 to cancer.


Assuntos
Colposcopia , Análise Espectral/métodos , Displasia do Colo do Útero/diagnóstico , Algoritmos , Alphapapillomavirus/isolamento & purificação , Feminino , Humanos , Curva ROC , Sensibilidade e Especificidade , Displasia do Colo do Útero/virologia
18.
Biomed Opt Express ; 11(1): 269-280, 2020 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-32010516

RESUMO

Cervical cancer incidence and mortality rates remain high in medically underserved areas. In this study, we present a low-cost (<$5,000), portable and user-friendly confocal microendoscope, and we report on its clinical use to image precancerous lesions in the cervix. The confocal microendoscope employs digital apertures on a digital light projector and a CMOS sensor to implement line-scanning confocal imaging. Leveraging its versatile programmability, we describe an automated aperture alignment algorithm to ensure clinical ease-of-use and to facilitate technology dissemination in low-resource settings. Imaging performance is then evaluated in ex vivo and in vivo pilot studies; results demonstrate that the confocal microendoscope can enhance visualization of nuclear morphology, contributing to significantly improved recognition of clinically important features for detection of cervical precancer.

19.
Biol Blood Marrow Transplant ; 15(11): 1465-74, 2009 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-19822307

RESUMO

Hematopoietic stem-cell transplantation (HSCT) is associated with high rates of gonadal failure, which is distressing for younger patients desiring to start a family. The perceived importance and optimal timing of discussing fertility- and menopause-related information with women undergoing aggressive treatment such as HSCT is not well defined. Questionnaires were sent to 532 patients who underwent HSCT between January 1987 and September 2004 at the ages of 16 to 50 years. The questionnaire assessed demographic data, the need for fertility- and menopause-related information at various times during treatment, and standardized measures of anxiety, quality of life, and menopausal symptoms. The return rate was 40.2%, with 196 patients participating. Of these, 38% reported that they had discussed fertility-related issues with health-care providers since their diagnosis; 54% had discussed menopause-related issues. At the time of diagnosis, participants considered receiving information on fertility and menopause as being of equal importance. However, after HSCT, information about menopause was considered more important than information on fertility (P < or = .0001). Being <40 years, being childless, desiring to bear children in the future, and having a high score on the State-Trait Anxiety Inventory (STAI) correlated with higher ratings of importance for both fertility- and menopause-related information. Our results suggested that healthcare providers should provide information on fertility and menopause repeatedly throughout the treatment period, and that menopause-related information should be reemphasized after HSCT. Such counseling is crucial for patients who are young and childless.


Assuntos
Transplante de Células-Tronco Hematopoéticas/efeitos adversos , Infertilidade Feminina/psicologia , Menopausa Precoce/psicologia , Educação de Pacientes como Assunto , Insuficiência Ovariana Primária/psicologia , Sobreviventes/psicologia , Condicionamento Pré-Transplante/efeitos adversos , Adolescente , Adulto , Fatores Etários , Idoso , Atitude Frente a Morte , Atitude Frente a Saúde , Medo , Feminino , Humanos , Infertilidade Feminina/etiologia , Pessoa de Meia-Idade , Agonistas Mieloablativos/efeitos adversos , Neoplasias/psicologia , Neoplasias/cirurgia , Satisfação do Paciente , Insuficiência Ovariana Primária/etiologia , Qualidade de Vida , Estudos Retrospectivos , Inquéritos e Questionários , Fatores de Tempo , Irradiação Corporal Total/efeitos adversos , Adulto Jovem
20.
Biomed Opt Express ; 10(12): 6145-6159, 2019 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-31853391

RESUMO

Cervical cancers are primarily diagnosed via colposcopy, in which the tissue is visually assessed by a clinician for abnormalities, followed by directed biopsies and histologic analysis of excised tissue. Optical biopsy technologies offer a less invasive method of imaging such that subcellular features can be resolved without removing tissue. These techniques, however, are limited in field-of-view by the distal end of the probe. We present a prototype that incorporates a rigid, machinable waveguide that is in direct contact with a fluorescently-labeled sample paired with a scanning fluorescent microscope. The system is capable of imaging large areas of tissue without the need to re-position the tissue-probe interface. A mosaicing algorithm was developed to quantify scanning shifts and stitch neighboring frames together to increase the field-of-view. Our prototype can yield a maximum axial resolution of <5 µm for individual frames and can produce mosaiced images with a field-of-view greater than 15 mm x 15 mm without sacrificing resolution. We validated the system with a 1951 USAF resolution target, fluorescent in vitro standards, and a patient study where ex vivo conization samples of squamous cervical epithelium were imaged. The results of the patient study indicate that architectural features of subcellular components could be detected and differentiated between normal tissue and precancerous lesions.

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