Search results for "cance"
showing 10 items of 12092 documents
A histological and clinical study on oral cancer: Descriptive analyses of 365 cases
2007
Cancer is the second cause of death in Portugal right after cardio vascular diseases. In Portugal the incidence of oral and pharynx cancer (OPC) is higher than uterus and larynx cancers, and in US its frequency is higher than melanoma or uterus cancer, diseases that concern more population than oral cancer. Aims The aim of this paper is to identify preferable anatomic location for oral cancer, mean age of patients, the use of tobacco and alcohol, histological characteristics, staging, type of therapeutics, presence of metastases and 1 and 5 year follow up. Matherials and Methods Data was collected from clinical charts of 365 cases from the Centro de Lisboa do Instituto Português de Oncologi…
DNA integrity in diagnosis of premalignant lesions
2020
Background Carcinogenesis is a dynamic process which traditional biopsying can not keep up with. Saliva as fluid in the vicinity of the tumor can offer better insights to this process. This study aimed to identify the accuracy of salivary DNA integrity index in differentiating between oral premalignant lesions and oral cancer. Material and Methods This phase II diagnostic test accuracy study included 93 patients divided into three groups: 30 oral cancer patients, 33 patients with oral premalignant lesions divided into 21 oral lichen planus patients and 12 patients with leukoplakia and 30 normal individuals who acted as controls. Oral rinse was collected from all participants and they all un…
Cavernous sinus metastasis from oropharyngeal squamous cell carcinoma.
2007
Metastasis to the cavernous sinus from head and neck cancer is uncommon and has been previously reported by a few authors. It is usually a late manifestation of the primary tumor and may be the first evidence of a widespread dissemination of the disease. Main clinical findings are those related with involvement of cranial nerves III to VI as they pass through the cavernous sinus. Although diagnosis may be difficult, the appearance of clinical and radiological findings of cavernous sinus involvement in a context of head and neck cancer must alert us about an intracranial metastatic infiltration. In most cases treatment is palliative with radiotherapy and/or chemotherapy. The prognosis of thi…
Management of Early Glottic Cancer Treated by CO2 Laser According to Surgical-Margin Status: A Systematic Review of the Literature
2021
Abstract Introduction Transoral laser microsurgery (TLM) is the treatment of choice for Tis-T2 squamous cell glottic carcinomas due to its advantages compared with open surgery and radiotherapy. However, the CO2 laser beam causes changes and damage on the specimens, making the histological assessment of resection margins, the gold standard for confirming radical tumor resection, sometimes difficult. Objective To assess the different ways to manage patients depending on the status of the histopathological margin according to recent studies to detect the most commonly shared therapeutic strategy. Data Synthesis We analyzed the literature available on the PubMed and Web of Science databases, i…
TP53 mutations and S-phase fraction but not DNA-ploidy are independent prognostic indicators in laryngeal squamous cell carcinoma
2005
To prospectively evaluate the prognostic significance of TP53, H-, K-, and N-Ras mutations, DNA-ploidy and S-phase fraction (SPF) in patients affected by locally advanced laryngeal squamous cell carcinoma (LSCC). Eight-one patients (median follow-up was 71 months) who underwent resective surgery for primary operable locally advanced LSCC were analyzed. Tumor DNA was screened for mutational analysis by PCR/SSCP and sequencing. DNA-ploidy and SPF were performed by flow cytometric analyses. Thirty-six patients (44%) had, at least, a mutation in the TP53 gene. Of them, 22% (8/36) had double mutations and 3% (1/36) had triple mutations. In total, 46 TP53 mutations were observed. The majority (41…
Dzīves kvalitāte pacientiem pēc gastrektomijas
2020
Bakalaura darba tēma: “Dzīves kvalitāte pacientiem pēc gastrektomijas”. Tēmas aktualitāte: Kuņģa vēzis ir ļaundabīgs kuņģa epitēlija audzējs ar mazsimptomātisku strauju augšanu, vispārīgu izplatību un sliktu prognozi. Latvijā saslimšana ar kuņģa vēzi vīriešiem ir trešajā, bet sievietēm ceturtajā vietā starp audzējiem. (1) Kuņģa vēža diagnozes primāri iereģistrēto gadījumu skaits Latvijā uz 2017. gadu sastādīja 524 iedzīvotājus, no kuriem vīrieši ir 291 un sievietes – 233. (2) Kuņģa vēža gadījumā absolūtas indikācijas ir ķirurģiskajai ārstēšanai. Viens no radikāliem operācijas veidiem ir gastrektomija – pilna kuņģa izgriešana. (1) Darba mērķis: Noskaidrot dzīves kvalitāti pacientiem pēc gast…
Gastric metastasis from breast cancer
2020
Introduction: Breast carcinoma is the most common malignancy in women and the main cause of tumor deaths. Despite early recognition by screening and improvement in treatment regimens, many patients will eventually develop metastases, either locoregional recurrences or distant metastases, most frequently in the skeleton, liver and lung. Metastases to the gastrointestinal tract are infrequent and not even mentioned in the major oncologic textbooks. Case presentation: We report a case of metastasis to the stomach from occult breast cancer. The diagnosis was established by computed tomography (CT), histologic and immunohistochemical analyses of biopsies of the stomach lesion. The patient was tr…
The matrix metalloproteinase and insulin-like growth factor system in oral cancer : a prospective clinical study
2017
Aim The absence of reliable single serum biomarkers for oral premalignant lesion (OPL) and oral squamous cell carcinoma (OSCC) limits early diagnosis, monitoring of advanced disease, and prediction of prognosis. Methods In this prospective study, serum levels of matrix metalloproteinase (MMP)-2, MMP-3, MMP-13, insulin-like growth factor (IGF)-1, and IGF-binding protein (IGFBP)-3 were measured in 81 untreated OSCC patients, 49 healthy subjects, and 75 individuals with OPLs, and correlated with clinicopathological parameters. Results Serum levels of MMP-3 were significantly higher in OSCC patients compared to healthy subjects (p=0.004). Mean IGF-1 and IGFBP-3 levels in OSCC patients were sign…
Oral lichenoid disease as a premalignant condition : the controversies and the unknown
2009
We grouped as oral lichenoid disease (OLD) a series of chronic inflammatory processes with autoimmune base that affect the epithelium of the oral mucosa. This disease presents in 2% of the population with a marked predilection for the female gender, especially perimenopausal women. Clinically, it is characterized by the presence of lineal reticular papules and histologically by liquefaction degeneration of the basal layer of the epithelium associated with an inflammatory infiltrate with a "band-like" disposition on the lamina propria, composed primarily of T lymphocyte cells. Its pathogenicity is associated with deregulation of the cellular immune system, where the activated cytotoxic CD8 a…
Impact of Narrow Band Imaging in Pre-Operative Assessment of Suspicious Oral Cavity Lesions: A Systematic Review
2021
Introduction: Narrow band imaging (NBI) is a powerful tool that allows visualizing the mucosal and submucosal vasculature. Among the available diagnostic techniques, NBI is one of the most valid for early detection of oral squamous cell carcinoma (OSCC). Materials and Methods: We carried out a bibliographic search in PubMed, Scopus and Web of Science databases using relevant keywords. Articles selected were screened by two independent authors based on inclusion and exclusion criteria. Nine papers were singled out according to the eligibility criteria and included in this review. We investigated the articles for pooled sensitivity, specificity, accuracy, positive predictive value and negativ…