View clinical trials related to Neoplasia.
Filter by:The finding of gastric dysplasia not associated with macroscopic lesions (DNAML) or the follow-up of dysplasia after endoscopic resection (DAER) is a challenging dilemma. In the last few years, radiofrequency ablation (RFA) has become a recognized tool in the treatment of dysplastic Barrett's esophagus, but its use in gastric dysplasia has not yet been studied. The investigators aim to study the efficacy, safety and tolerability of RFA in the treatment of dysplastic gastric mucosa.
This study examines if certain imaging techniques and devices can aid the surgeon in detecting cancer during the surgical procedure.
Colonoscopy is the accepted gold standard for screening of colorectal cancer. However, small and flat neoplastic lesions might be overlooked with standard video endoscopes. The new available EPKi system (Pentax, Japan) enables with HD+ imaging resolution above HDTV standard. Aim of the study was to test the efficacy of HD+ colonoscopy alone and in conjunction with I-Scan (newly developed post processing digital filter)in comparison to standard videoendoscopy
This study, conducted by the National Cancer Institute and the University of Oklahoma, will look for changes in cervix cells and other samples that may be signs of cervical disease. Human papilloma virus, or HPV, is a common infection of the genitalia in women that usually goes away by itself. If HPV infection does not go away, it might turn into cancer of the cervix, although this is rare. This study will examine why many HPV infections go away and why a few persist and lead to cervical cancer. Women 18 years of age and older who are referred for colposcopy (examination of the vagina and cervix using an instrument with a magnifying lens) at the University of Oklahoma following Pap smear diagnosis may be eligible for this study. Women will be in one of the following diagnostic categories: - Cancer: Stage 1-2 only. - Precancer: Cervical intraepithelial neoplasia (CIN3). - HPV-infected: Positive for any of the 13 known cancer-causing HPV types, but not diagnosed with cancer or CIN3. - Normal: Negative for cancer-causing HPV and normal tissue laboratory results. Participants will undergo the following procedures: - Questionnaire: Covers demographic information (such as age, race, ethnicity, marital status, etc.), pregnancy history, menstrual and sexual history, contraceptive history, hormone medication history, medical history, smoking history, physical development, family history, and health care access. - Blood test: 2 tablespoons of blood drawn. - Colposcopy. - Procedure to collect a sample of cervical cells and fluids for HPV testing and research.