Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 82
Filtrar
1.
Lancet Reg Health Southeast Asia ; 24: 100296, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38756162

RESUMEN

Background: Cancer survival data from Population Based Cancer Registries (PBCR) reflect the average outcome of patients in the population, which is critical for cancer control efforts. Despite decreasing incidence rates, cervical cancer is the second most common female cancer in India, accounting for 10% of all female cancers. The objective of the study is to estimate the five-year survival of patients with cervical cancer diagnosed between 2012 and 2015 from the PBCRs in India. Methods: A single primary incidence of cervical cancer cases of 11 PBCRs (2012-2015) was followed till June 30, 2021 (n = 5591). Active follow-ups were conducted through hospital visits, telephone calls, home or field visits, and public databases. Five-year Observed Survival (OS) and Age Standardised Relative Survival (ASRS) was calculated. OS was measured by age and clinical extent of disease for cervical cancers. Findings: The five-year ASRS (95% CI) of cervical cancer was 51.7% (50.2%-53.3%). Ahmedabad urban (61.5%; 57.4%-65.4%) had a higher survival followed by Thiruvananthapuram (58.8%; 53.1%-64.3%) and Kollam (56.1%; 50.7%-61.3%). Tripura had the lowest overall survival rate (31.6%; 27.2%-36.1%). The five-year OS% for pooled PBCRs was 65.9%, 53.5%, and 18.0% for localised, regional, and distant metastasis, respectively. Interpretation: We observed a wide variation in cervical cancer survival within India. The findings of this study would help the policymakers to identify and address inequities in the health system. We re-emphasise the importance of awareness, early detection, and increase the improvement of the health care system. Funding: The National Cancer Registry Programme is funded through intra-mural funding by Indian Council of Medical Research, Department of Health Research, India, Ministry of Health & Family Welfare.

2.
Cancer ; 130(10): 1816-1825, 2024 May 15.
Artículo en Inglés | MEDLINE | ID: mdl-38183671

RESUMEN

BACKGROUND: Population-based cancer survival is a key indicator for assessing the effectiveness of cancer control by a health care system in a specific geographic area. Breast cancer is the most common cancer among women in India, accounting for over one quarter of all female cancers. The objective of this study was to estimate the 5-year survival of female patients who were diagnosed with breast cancer between 2012 and 2015 from the existing Population-Based Cancer Registries (PBCRs) in India. METHODS: In total, 17,331 patients who had breast cancer diagnosed between 2012 and 2015 from 11 PBCRs were followed until June 30, 2021. Active methods were used to track the vital status of registered breast cancer cases. The study conducted survival analysis by calculating the difference between the date of first diagnosis and the date of death or censoring to estimate observed survival and relative survival using the actuarial survival approach and the Ederer-II approach, respectively. RESULTS: The 5-year age-standardized relative survival (95% confidence interval [CI]) of patients with breast cancer was 66.4% (95% CI, 65.5%-67.3%). Mizoram (74.9%; 95% CI, 68.1%-80.8%), Ahmedabad urban (72.7%; 95% CI, 70.3%-74.9%), Kollam (71.5%; 95% CI, 69.2%-73.6%), and Thiruvananthapuram (69.1%; 95% CI, 67.0%-71.2%) had higher survival rates than the national average. Conversely, Pasighat had the lowest survival rate (41.9%; 95% CI, 14.7%-68.6%). The 5-year observed survival rates for localized, regional, and distant metastasis in the pooled PBCRs were 81.0%, 65.5%, and 18.3%, respectively. CONCLUSIONS: The overall disparity in survival rates was observed across 11 PBCRs, with lower survival rates reported in Manipur, Tripura, and Pasighat. Therefore, it is imperative to implement comprehensive cancer control strategies widely throughout the country.


Asunto(s)
Neoplasias de la Mama , Sistema de Registros , Humanos , Femenino , India/epidemiología , Neoplasias de la Mama/mortalidad , Neoplasias de la Mama/epidemiología , Neoplasias de la Mama/patología , Persona de Mediana Edad , Anciano , Adulto , Análisis de Supervivencia , Tasa de Supervivencia , Anciano de 80 o más Años
3.
J Cancer Res Ther ; 2024 Jan 22.
Artículo en Inglés | MEDLINE | ID: mdl-38261454

RESUMEN

INTRODUCTION: The present study aimed to calculate the burden of oral cavity cancer (OCC) including incidence, mortality rate, survival rate, and influence of predictive factors such as clinicopathological, demographic findings, and treatment modalities. MATERIALS AND METHODS: Data in this retrospective study were collected from India's population-based cancer registry (PBCR) from 2010 to 2016. A total of 1051 cases of OCC were noted. Incidence and mortality rates were calculated. The cumulative survival outcome was calculated using Kaplan-Meier (KM) method. Prognostic factors were estimated using the Cox proportional hazard regression model. RESULTS: The age-standardized incidence rates (ASR), and mortality rate (ASMR), of overall OCC cases were 10.1 and 8.4 per 100 thousand population, respectively. Five-year overall survival (OS) was 32.3%. Survival outcome was significantly associated with the given treatment (Chi-square value = 58.17, P = 0.0001) and anatomical site (Chi-square value = 26.70, P = 0.0001). 17.6% of cases in males were <39-year age group. The hazard ratio (HR) in the age group of >50 years was 2.065 (95% CI 1.34-3.18, P = 0.001). Combination therapy had an HR of 2.630 (95% CI 1.91-3.63, P value 0.000). Tonsillar carcinoma (C09) (95% CI 1.04-3.12) had 1.8 times more chances of death than lip carcinoma (C00). CONCLUSION: OCC cases are increasing in the younger population, and overall, cases show higher mortality rates with reduced survival outcomes. Prognostic factors such as age >50 years, single modality treatment, and alveolar and tonsillar malignancy are associated with poor survival. OCC robust screening by a trained health professional can improve early detection and increases awareness and lower mortality of the disease.

4.
J Genet ; 1022023.
Artículo en Inglés | MEDLINE | ID: mdl-37731249

RESUMEN

The ring chromosome 21[r(21)] syndrome is a rare disorder, and mainly occurs as a de novo event. However, a wide variation of the phenotype has been reported in r(21) cases depending on breakpoints, loss of genetic material, and mosaicism of cells with r(21) and monosomy 21, causing copy number alterations. A 29-month-old female was referred to the centre for seizures, developmental delay, microcephaly, hypotonia, deafness, and other congenital abnormalities. Physical examination revealed short stature and multiple facial dysmorphism. She was unable to sit, walk or stand by herself. Cytogenetic study with GTG banding revealed a karyotype of mos 46,XX,r(21)(p11.1q22.12)[70]/45,XX,-21[10]/47,XX,r(21),+r(21)[1]/46,XX[10]. Additionally, molecular cytogenetics refined the breakpoints and characterized the deleted region (RP11-410P24/CHR21: 32849565-33019511) in the clone with the r(21) as ~12-14 Mb contiguous region at 21q22.12 to 21qter. The present study has accurately detected copy number alterations caused by ring chromosome formation. The basis of the UCSC Genome Browser on Human (GRCh38/hg38) analysis suggests hemizygous expression of a deleted critical region of chromosome 21 in ring chromosome cell lines. This is likely to be the underlying cause of the present phenotypes in the patient. Overall, the genotype-phenotypic correlation in r(21) cases remains widely diverse, most likely due to tissue-specific mosaicism of the 45, XX,-21 cell line.


Asunto(s)
Anomalías Múltiples , Cromosomas en Anillo , Humanos , Niño , Femenino , Preescolar , Cromosomas Humanos Par 21/genética , Anomalías Múltiples/genética , Convulsiones/genética , Trastornos del Crecimiento
5.
Indian J Cancer ; 60(3): 379-389, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36861695

RESUMEN

Background: Oral cancer ranks second and accounts for over 20% of all cancers reported in India. Like management of all other cancers, oral cancers bring a heavy financial burden to their families. This study analyzes the financial burden on families during the management of oral cancer at Kasturba Hospital, Sewagram, a government-aided tertiary health care facility in central India. Methods: The hospital-based cross-sectional study was conducted in the cancer unit of a government-aided tertiary hospital of central India. A total of 100 patients with oral cancer being treated in the hospital were included in the study. Information regarding cost incurred on management of oral cancer was inquired from a close family member or a caregiver of the study subjects. Results: The out-of-pocket expenditure on treatment of oral cancer was approximately INR 100,000 (USD 1363). It has been found that 96% of families experienced catastrophic health expenditure as a result of treatment. Conclusion: Although India aims for universal health coverage, it is important to protect cancer patients from catastrophic health expenditure.


Asunto(s)
Neoplasias de la Boca , Humanos , Factores Socioeconómicos , Estudios Transversales , Neoplasias de la Boca/epidemiología , Neoplasias de la Boca/terapia , India/epidemiología , Centros de Atención Terciaria
6.
Indian J Cancer ; 60(2): 242-244, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-36861717

RESUMEN

Mature cystic teratoma of the ovary is the most common type of germ cell tumor. It constitutes approximately 20% of all ovarian neoplasms. As a rare occurrence, however, several types of benign and malignant tumours developing secondarily in dermoid cysts have been reported. Those of central nervous origin are almost exclusively gliomas of astrocytic, ependymal or oligodendroglial lineage. Choroid plexus tumors are unusual intracranial tumors which comprised of only 0.4-0.6% of all brain tumors. These are neuroectodermal in origin and similar in structure to a normal choroid plexus in the form of multiple papillary fronds mounted on a well vascularized connective tissue stroma. The present case report highlights the presence of a choroid plexus tumor in a mature cystic teratoma of the ovary in a 27-year-old woman who came for safe confinement and cesarean section.


Asunto(s)
Neoplasias Ováricas , Papiloma del Plexo Coroideo , Teratoma , Embarazo , Humanos , Femenino , Adulto , Papiloma del Plexo Coroideo/diagnóstico , Papiloma del Plexo Coroideo/cirugía , Cesárea , Neoplasias Ováricas/diagnóstico , Neoplasias Ováricas/cirugía , Neoplasias Ováricas/patología , Teratoma/diagnóstico , Teratoma/cirugía , Teratoma/patología
7.
Oman Med J ; 38(1): e468, 2023 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-36742178

RESUMEN

Angiomatoid fibrous histiocytoma (AFH) is a rare soft tissue neoplasm of low malignant potential often misdiagnosed clinically. It typically occurs in the superficial soft tissues of the extremities in children and young adults. It is characterized by recurrences and rarely metastases. Surgery remains the mainstay of management. Here, we present a rare case report of AFH in a 65-year-old male diagnosed using fine needle aspiration as spindle cell sarcoma. The patient underwent wide local excision. The patient is under follow-up. There is no evidence of metastases, and the patient is disease free three-years post-excision.

8.
J Cancer Res Ther ; 19(Suppl 2): S857-S862, 2023 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-38384066

RESUMEN

INTRODUCTION: Ovarian neoplasms affect a huge part of the female population and, simultaneously, have the worst prognosis among all gynecological malignancies. In most of the population-based cancer registries (PBCR) in India, ovarian cancer is the third leading site of cancer among women, trailing behind cervix and breast cancer. MATERIALS AND METHODS: In the present study, we have summarized the number of new cases of ovarian malignancy and its profile observed in the PBCR in central India during 7 years. REPORTS: During a 7-year duration (2010-2016), 6,515 cancer patients were recorded at PBCR, and 228 cases were of ovarian malignancy. It was observed that most of the cases in this study were in 41-50 years of life. The age-standardized incidence rate of ovarian cancers in the present study was 4.61 per 100,000, and the crude incidence rate was 5.08 per 100,000. The crude mortality rate and age-standardized mortality rate of ovarian cancer were 2.3 and 2.02 per 100,000, respectively. Serous carcinoma was our study's most common histological subtype (43.75%), followed by mucinous carcinoma. CONCLUSION: A steady increase has been observed in the incidence of ovarian cancer in several registries. A significant goal in managing ovarian cancer is to develop an effective test to detect the disease at its earlier stages, resulting in reduced mortality.


Asunto(s)
Neoplasias de la Mama , Neoplasias Ováricas , Femenino , Humanos , Neoplasias Ováricas/epidemiología , Neoplasias Ováricas/patología , Neoplasias de la Mama/patología , Pronóstico , Sistema de Registros , India/epidemiología , Incidencia
9.
Indian J Otolaryngol Head Neck Surg ; 74(Suppl 2): 1836-1840, 2022 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-36452655

RESUMEN

Mutations of p53 gene is one of the most common events in human cancers including oral squamous cell carcinoma (OSCC). However, its role in carcinogenesis and association with regard to prognosis is still under investigation and unclear. The aim was to study the expression of p53 in patients of OSCC and correlation with clinical presentation and prognosis. In this retrospective observational pilot study, we examined expression of p53 in 50 histologically diagnosed cases of OSCC and correlated it with initial clinical presentation and clinical events in follow up period. p53 expression was significantly negative (94%) in patients with history of only oral tobacco consumption while cases with additional history of smoking or alcohol were positive (p = 0.0001 and 0.011). On the other hand, aggressive course of the disease was found to be significant with p53 positivity in the form of lymph nodal extension (13 out of 17 cases) (p = 0.011) and recurrence (6 out of 10 cases) (p = 0.024). p53 was overexpressed (positive) in predisposing factors like smoking and alcohol but not in OSCC associated with chewing tobacco. p53 overexpression is also associated with advanced TNM stage. To the best of our knowledge, this is the first report where association of p53 overexpression and oral tobacco consumption associated OSCC was not observed and we recommend that carcinogenic events in chewing tobacco induced OSCC should be studied separately for its unique set of mutations.

10.
Indian J Cancer ; 59(3): 422-425, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36412316

RESUMEN

Dedifferentiated Liposarcoma (DDLPS) is a rare subtype of liposarcoma with a high preponderance of local recurrence and distant metastasis. The frequent site of DDLPS is the retroperitoneum, followed by the limbs and trunk. The primary omental DDLPS is very rare and only a few cases have been reported in the literature. Here we report a rare case of primary giant DDLPS of omentum with intraperitoneal metastasis in a 61year old woman. The present case report adds to our knowledge, that a case of intraperitoneal DDLPS can mimic ovarian cancer clinically and should be considered in the differential diagnosis of a pelvic mass in postmenopausal women.


Asunto(s)
Liposarcoma , Neoplasias Ováricas , Humanos , Femenino , Epiplón/patología , Carcinoma Epitelial de Ovario/diagnóstico , Neoplasias Ováricas/diagnóstico , Neoplasias Ováricas/cirugía , Liposarcoma/diagnóstico , Liposarcoma/patología , Diagnóstico Diferencial
11.
Med J Armed Forces India ; 78(Suppl 1): S289-S292, 2022 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-36147421

RESUMEN

A bezoar is a mass of indigestible foreign material found in the gastrointestinal tract, usually in the stomach. Trichobezoars are the second most common bezoars which are usually found in young psychiatric patients. A 15-year-old female patient presented with signs of intestinal obstruction and acute abdomen. The preoperative investigations revealed a perforated appendix, and an exploratory laparotomy was performed. Intraoperative findings showed presence of a mass of hair in the stomach along with a long tail extending into the small intestine. Postoperatively, the patient's condition worsened and she died because of complications of perforation peritonitis on day 3. Early diagnosis of Rapunzel syndrome can help in making early interventions. The prognosis of incidental detection of this condition depends on the accompanying cause.

12.
Andrologia ; 54(11): e14581, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36068176

RESUMEN

Spermatogenesis is regulated by complex tissue specific gene expression in the testis to achieve normal male fertility. X-chromosome specific TATA binding protein (TBP)-associated factor 7L (hTAF7L) is one of the transcriptional regulator genes considered essential for spermatogenesis. The aim of this study was to evaluate the role of variants/mutations in the testis-specific hTAF7L gene in non-obstructive azoospermia and severe oligozoospermia male infertility. We studied 156 idiopathic non-obstructive azoospermic, severe oligozoospermic infertile males and 50 fertile proven controls. Infertile males and control subjects were genotyped for variants of the hTAF7L gene using polymerase chain reaction and a direct Sanger sequencing approach. The odds ratio evaluated the association of hTAF7L gene variants with idiopathic male infertility. The variants found in the hTAF7L gene were subjected to an in-silico analysis study. In infertile study subjects, we observed 11 single base pair nucleotide changes at various exons and three frameshift variants at exon 10 in the hTAF7L gene. We also found more than one variant in some non-obstructive azoospermia and severe oligozoospermia infertile males along with control subjects. All these variants changed the amino acid sequences in the hTAF7L gene. However, similar changes were also seen in fertile subjects, and the differences were not statistically significant. In-silico tools also predicted that the variants were likely to be benign. The variants in cDNA of the hTAF7L gene were typical SNPs. It is found that the hTAF7L gene is highly polymorphic and these missense variants are not directly associated with male infertility. However, we feel that more studies are needed to elucidate the role of multiple variants of the hTAF7L gene in the process of normal spermatogenesis.


Asunto(s)
Azoospermia , Infertilidad Masculina , Oligospermia , Factores Asociados con la Proteína de Unión a TATA , Factor de Transcripción TFIID , Humanos , Masculino , Azoospermia/genética , Infertilidad Masculina/genética , Oligospermia/genética , Espermatogénesis/genética , Testículo , Factor de Transcripción TFIID/genética , Factores Asociados con la Proteína de Unión a TATA/genética
13.
BMC Infect Dis ; 22(1): 676, 2022 Aug 06.
Artículo en Inglés | MEDLINE | ID: mdl-35933382

RESUMEN

BACKGROUND: The incidence of high-risk human papillomavirus (hrHPV)-driven head and neck squamous cell carcinoma, in particular oropharyngeal cancers (OPC), is increasing in high-resource countries. Patients with HPV-induced cancer respond better to treatment and consequently have lower case-fatality rates than patients with HPV-unrelated OPC. These considerations highlight the importance of reliable and accurate markers to diagnose truly HPV-induced OPC. METHODS: The accuracy of three possible test strategies, i.e. (a) hrHPV DNA PCR (DNA), (b) p16(INK4a) immunohistochemistry (IHC) (p16), and (c) the combination of both tests (considering joint DNA and p16 positivity as positivity criterion), was analysed in tissue samples from 99 Belgian OPC patients enrolled in the HPV-AHEAD study. Presence of HPV E6*I mRNA (mRNA) was considered as the reference, indicating HPV etiology. RESULTS: Ninety-nine OPC patients were included, for which the positivity rates were 36.4%, 34.0% and 28.9% for DNA, p16 and mRNA, respectively. Ninety-five OPC patients had valid test results for all three tests (DNA, p16 and mRNA). Using mRNA status as the reference, DNA testing showed 100% (28/28) sensitivity, and 92.5% (62/67) specificity for the detection of HPV-driven cancer. p16 was 96.4% (27/28) sensitive and equally specific (92.5%; 62/67). The sensitivity and specificity of combined p16 + DNA testing was 96.4% (27/28) and 97.0% (65/67), respectively. In this series, p16 alone and combined p16 + DNA missed 1 in 28 HPV driven cancers, but p16 alone misclassified 5 in 67 non-HPV driven as positive, whereas combined testing would misclassify only 2 in 67. CONCLUSIONS: Single hrHPV DNA PCR and p16(INK4a) IHC are highly sensitive but less specific than using combined testing to diagnose HPV-driven OPC patients. Disease prognostication can be encouraged based on this combined test result.


Asunto(s)
Carcinoma de Células Escamosas , Neoplasias Orofaríngeas , Infecciones por Papillomavirus , Carcinoma de Células Escamosas/diagnóstico , Inhibidor p16 de la Quinasa Dependiente de Ciclina/genética , ADN Viral/análisis , ADN Viral/genética , Humanos , Inmunohistoquímica , Neoplasias Orofaríngeas/diagnóstico , Neoplasias Orofaríngeas/patología , Papillomaviridae/genética , Infecciones por Papillomavirus/complicaciones , Infecciones por Papillomavirus/diagnóstico , Reacción en Cadena de la Polimerasa , ARN Mensajero/análisis
14.
Mol Biol Rep ; 49(5): 4115-4121, 2022 May.
Artículo en Inglés | MEDLINE | ID: mdl-35359238

RESUMEN

BACKGROUND: DNA isolation from formalin-fixed paraffin-embedded (FFPE) tissues for molecular analysis has become a frequent procedure in cancer research. However, the yield or quality of the isolated DNA is often compromised, and commercial kits are used to overcome this to some extent. METHODS: We developed a new protocol (IARCp) to improve the quality and yield of DNA from FFPE tissues without using any commercial kit. To evaluate the IARCp's performance, we compared the quality and yield of DNA with two commercial kits, namely NucleoSpin® DNA FFPE XS (MN) and QIAamp DNA Micro (QG) isolation kit. RESULTS: Total DNA yield for QG ranged from 120.0 to 282.0 ng (mean 216.5 ng), for MN: 213.6-394.2 ng (mean 319.1 ng), and with IARCp the yield was much higher ranging from 775.5 to 1896.9 ng (mean 1517.8 ng). Moreover, IARCp has also performed well in qualitative assessments by spectrophotometer, fluorometer, and real-time PCR assay. CONCLUSION: Overall, IARCp represents a novel approach to DNA isolation from FFPE which results in good quality and significant amounts of DNA suitable for many downstream genome-wide and targeted molecular analyses. This protocol does not require the use of any commercial kits or phenol for isolating DNA from FFPE tissues, making it suitable to implement in low-resource settings such as low and middle-income countries.


Asunto(s)
ADN , Formaldehído , Genómica , Adhesión en Parafina/métodos , Fijación del Tejido/métodos
15.
Gulf J Oncolog ; 1(38): 15-23, 2022 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-35156640

RESUMEN

BACKGROUND: Endometrial carcinoma (EC) is the only gynecologic cancer with increasing incidence and mortality worldwide. This study aimed to determine association of cell proliferation marker CyclinD1, p53 and Ki67 with clinicopathological parameters and survival analysis in patients of EC. MATERIAL AND METHODS: One hundred twenty-four histological confirmed cases of EC treated at our institute were included in this study. The appropriate tissue blocks of cases which were retrieved from 2010 to 2015. The study period was from Jan 2018 to Jan 2020. Data pertaining to patient's clinical details, histopathological diagnosis, treatment and follow up was retrieved from Hospital information System. Immunohistochemical evaluation of Cyclin D1, p53 and Ki67 was done. Overall survival and Disease-free survival for each category were analyzed by the Kaplan-Meier method. RESULTS: Of the 124 cases of EC, 108(87.09%) cases were of type I and 16 (12.89%) cases of type II. Overall positive staining of cyclinD1, p53 and Ki67 were noted in 53.22%, 42.22% and 32.3% cases respectively. The clinicopathological parameters affecting disease-free survival were age (p=0.039) histological types (p=0.007), and FIGO stage (p< 0.001). Elevated Ki67 index and p53 overexpression was associated with type II morphology (p= 0.001). Whereas Cyclin D1 expression was associated with type I morphology and poorly differentiated tumor. CONCLUSION: Cyclin D1 positive staining, p53overexpression and an elevated Ki-67index all had an independent prognostic significance in endometrial cancer. This panel of biomarkers may help to differentiate tumor behavior, and necessity for more radical surgery and post- operative chemotherapy. Key words: Endometrial carcinoma; cyclin D1; p53; Ki67; Survival analysis.


Asunto(s)
Ciclina D1 , Neoplasias Endometriales , Antígeno Ki-67 , Proteína p53 Supresora de Tumor , Biomarcadores de Tumor , Ciclina D1/metabolismo , Neoplasias Endometriales/patología , Femenino , Humanos , Inmunohistoquímica , Antígeno Ki-67/metabolismo , Estadificación de Neoplasias , Pronóstico
16.
Indian J Surg Oncol ; 13(4): 723-730, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36687243

RESUMEN

Malignant phyllodes tumor (MPT) with heterologous sarcomatous differentiation is extremely rare. We reviewed eleven cases of MPT with heterologous sarcomatous differentiation at our institute between 2009 and 2020. Demographic and clinical data were collected from patient records in hospital information system and population-based cancer registry. Each case reviewed retrospectively for the clinical features, prior treatment history, radiological imaging, histopathological and immunohistochemical details, disease stage, outcome and follow-up. On histopathology, four cases showed heterologous liposarcomatous differentiation, three cases showed fibrosarcomatous differentiation, two cases showed osteosarcomatous, and each case had angiosarcomatous and undifferentiated sarcomatous differentiation. Meticulous histopathological sampling along with a correct histopathological diagnosis and subtyping of the heterologous sarcomatous components is essential for planning treatment modality and prognostication of patients, although there are no clear-cut guidelines for surgical management and targeted therapy of these patients due its rarity and paucity of literature.

17.
Indian J Otolaryngol Head Neck Surg ; 74(Suppl 3): 5949-5953, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36742605

RESUMEN

Adenoid cystic carcinoma is rare, locally aggressive salivary gland tumor. It has indolent course, multiple local recurrences and delayed distant metastasis in lung, bone, liver and soft tissues which are detected up to a maximum of 5.5 years after local-regional resection of the primary tumor. Intracranial remote metastasis of ACCs is extremely rare, and very few cases have been reported in the literature. Here we report a rare case of intracranial remote metastasis of ACC of the parotid gland developed after 15 years of primary curative surgery, emphasizing long term follow up on these cases.

18.
Biochim Biophys Acta Mol Basis Dis ; 1867(11): 166228, 2021 11 01.
Artículo en Inglés | MEDLINE | ID: mdl-34311079

RESUMEN

Breast cancer stem cells (CSCs) are distinct CD44+-subpopulations that are involved in metastasis and chemoresistance. However, the underlying molecular mechanism of CD44 in breast CSCs-mediated tumorigenesis remains elusive. We observed high CD44 expression in advanced-stage clinical breast tumor samples. CD44 activation in breast CSCs sorted from various triple negative breast cancer (TNBC) cell lines induced proliferation, migration, invasion, mammosphere formation that were reversed in presence of inhibitor, 4-methyl umbelliferone or CD44 silencing. CD44 activation in breast CSCs induced Src, Akt, and nuclear translocation of pSTAT3. PCR arrays revealed differential expression of a metabolic gene, Lipoprotein lipase (LPL), and transcription factor, SNAI3. Differential transcriptional regulation of LPL by pSTAT3 and SNAI3 was confirmed by promoter-reporter and chromatin immunoprecipitation analysis. Orthotopic xenograft murine breast tumor model revealed high tumorigenicity of CD24-/CD44+-breast CSCs as compared with CD24+-breast cancer cells. Furthermore, stable breast CSCs-CD44 shRNA and/or intratumoral administration of Tetrahydrolipstatin (LPL inhibitor) abrogated tumor progression and neoangiogenesis. Thus, LPL serves as a potential target for an efficacious therapeutics against aggressive breast cancer.


Asunto(s)
Neoplasias de la Mama/genética , Carcinogénesis/genética , Receptores de Hialuranos/metabolismo , Lipoproteína Lipasa/genética , Células Madre Neoplásicas/patología , Animales , Mama/patología , Neoplasias de la Mama/tratamiento farmacológico , Neoplasias de la Mama/patología , Carcinogénesis/efectos de los fármacos , Movimiento Celular/efectos de los fármacos , Movimiento Celular/genética , Femenino , Regulación Neoplásica de la Expresión Génica , Técnicas de Silenciamiento del Gen , Células Endoteliales de la Vena Umbilical Humana , Humanos , Receptores de Hialuranos/genética , Lipoproteína Lipasa/antagonistas & inhibidores , Ratones , Orlistat/farmacología , Orlistat/uso terapéutico , Fosforilación , Factor de Transcripción STAT3/metabolismo , Transducción de Señal/efectos de los fármacos , Transducción de Señal/genética , Ensayos Antitumor por Modelo de Xenoinjerto
20.
Cancer Epidemiol ; 72: 101925, 2021 06.
Artículo en Inglés | MEDLINE | ID: mdl-33839457

RESUMEN

BACKGROUND: The main risk factors for head and neck cancer (HNC) are tobacco and alcohol use. However, an important fraction of oropharyngeal cancer (OPC) is caused by human papillomaviruses (HPV), a subgroup with increasing incidence in several western countries. METHODS: As part of the HPV-AHEAD study, we assessed the role of HPV infection in 772 archived tissue specimens of Belgian HNC patients: 455 laryngeal (LC), 106 oral cavity (OCC), 99 OPC, 76 hypopharyngeal (HC), and 36 unspecified parts of the head and neck. All specimens were tested for HPV DNA (21 genotypes); whereof all HPV DNA-positives, all HPV DNA-negative OPCs and a random subset of HPV DNA-negatives of the other HNC-sites were tested for the presence of type-specific HPV RNA and p16INK4a over-expression. RESULTS: The highest HPV DNA prevalence was observed in OPC (36.4 %), and was significantly lower (p < 0.001) in the other HNCs (OCC:7.5 %, LC:6.6 %). HPV16 was the most common HPV-genotype in all HNCs. Approximately 83.0 % of the HPV DNA-positive OPCs tested HPV RNA or p16-positive, compared to about 37.5 % and 44.0 % in OCC and LC, respectively. Estimation of the attributable fraction of an HPV infection in HNC was very similar for HPV RNA or p16 in addition to DNA-positivity; with 30 % for OPC, and 3 % for OCC and LC. CONCLUSION: Our study confirms the heterogeneity of HPV DNA prevalence across anatomical sites in HNC, with a predominance of HPV16 in all sites. The estimated proportion of HPV-driven HNC in Belgium, during the period 1980-2014, was 10 times higher in OPC compared to OCC and LC.


Asunto(s)
Alphapapillomavirus/genética , ADN Viral/genética , Neoplasias de Cabeza y Cuello/virología , Infecciones por Papillomavirus/virología , ARN Mensajero/aislamiento & purificación , Adulto , Anciano , Anciano de 80 o más Años , Bélgica , Inhibidor p16 de la Quinasa Dependiente de Ciclina , Femenino , Genotipo , Neoplasias de Cabeza y Cuello/terapia , Humanos , Antígeno Ki-67 , Masculino , Persona de Mediana Edad , Proteínas Oncogénicas Virales/genética , Coloración y Etiquetado
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA