View clinical trials related to Biopsy, Fine-Needle.
Filter by:Rationale: Until now there are no prospective studies comparing the 22 gauge and 25 gauge side-fenestrated and fork-tip needles. In the present study we will compare the two types of needles in terms of histological yield for the evaluation of solid pancreatic lesions in the absence of rapid on-site evaluation (ROSE). Moreover diagnostic accuracy and the number of passes necessary to achieve the maximum diagnostic and histological yield, and safety will be investigated. Objectives: To evaluate and compare the histologic retrieval rate of two different EUS-FNB needles of the same caliber (22 or 25 gauge). The passes will be 3 for each patient. Study design: Randomized monocentric trial. Study population: Patients ≥18 years old, referred for EUS-guided tissue sampling of a solid pancreatic mass. Intervention: EUS-guided tissue acquisition by mean EUS-FNB, using one of the following FNB needles: side-fenestrated 22 gauge, side-fenestrated 25 gauge, fork-tip 22 gauge or fork-tip 25 gauge. Main study parameters/endpoints: The main endpoint is the histologic yield (defined as the percentage of a tissue core of at least 550 micron at the greatest axis), obtained at each of the 3 needle passes. Secondary endpoints include: i) safety; ii) concordance between macroscopic on-site evaluation (MOSE) and histopathological evaluation ; iii) Accuracy using 1, 2 or 3 passes.
Rationale: Rapid on-Site Evaluation (ROSE) of cytologic specimens acquired with EUS-guided fine needle aspiration (EUS-FNA) represents the most accurate available technique to reach a definitive diagnosis in patients with pancreatic solid masses. Cytologic interpretation, however, requires a high degree of expertise rarely found outside high volume centers and ROSE is not available in many countries. This has created a barrier to the widespread dissemination of EUS in the community and throughout the world, because the lack of cytologic expertise has resulted in a low diagnostic accuracy and, therefore, in a limited perceived utility of EUS. A device that is able to: (i) acquire histologic core biopsy samples usually easier to be interpreted; (ii) be used by most of the endosonographers and not only by the experts; (iii) have a performance at least not inferior to ROSE, will represent a major breakthrough in the field of EUS tissue acquisition. The availability of such needles will determine a shift from cytology to histology that will overcome some of the limitations of cytology and ROSE, thus strongly contributing to the diffusion of EUS throughout the world and in the community. Objectives: To compare the performance and the diagnostic accuracy of EUS-guided fine needle biopsy (EUS-FNB) coupled with ROSE with that of EUS-FNB alone using an FNB needle. Study design: International randomized multicenter trial. Study population: Patients ≥18 years old, referred for EUS-guided tissue sampling of a solid pancreatic mass. Intervention: EUS-guided tissue acquisition by means of either EUS-FNB with ROSE or EUS-FNB alone, using one of the following FNB needles: Procore 20-gauge, SharkCore 22-gauge or Acquire 22-gauge. Main study parameters/endpoints: The main endpoint is the diagnostic accuracy, measured against the gold standard diagnosis that will be surgical resection specimen or in non-operated patients the results of other diagnostic work-up (other tissue sampling techniques and imaging studies) or the clinical course of the disease. Secondary endpoints include: i) safety; ii) presence of tissue core; iii) feasibility to perform additional immunohistochemical/molecular biology analyses; iv) time of the sampling procedure.
The purpose of this study is to demonstrate feasibility to access, visualize, and obtain specimens adequate for cytology of lung lesions in subjects with suspected lung cancer when using the iNod System.
The purpose of this study is to determine that there is no difference in final diagnosis of FNA specimens without a stylet, compared to using a stylet, when examined by a skilled cytopathologist.