View clinical trials related to Lymphadenopathy.
Filter by:The aim of this study is to compare the performance of 22G-ProCore and 22G-Standard needle in diagnosis of mediastinal and hilar lymphadenopathy via EBUS-TBNA with the purpose to explore the optimal technique for obtaining diagnostic material.
The present study investigates the efficacy of a new Endoultrasound guided fine needle biopsy (EUS-FNB) device (AquireTM Boston Scientific= AQUIRE®) for obtaining histological tissue cylinders in the diagnosis of solid pancreatic tumors, submucosal tumors of the upper gastrointestinal tract (esophagus, stomach, duodenum) and lymph node disease..
The guided FNA by endobronchial ultrasound ( Endobronchial Ultrasound guided transbronchial Needle Aspiration or EBUS-TBNA) is a minimally invasive technique with an established role in the staging of lung cancer 1, and in the evaluation of intrathoracic lymph node metastases from extrathoracic primary cancer2 . There is also a role in cases of isolated hilar and mediastinal lymph nodes in which the differential diagnosis includes mostly sarcoidosis, lymphoma and tuberculosis. 3 Various studies have evaluated more recently the diagnostic yield of EBUS-TBNA specifically for sarcoidosis 4 and thoracic lymphoma 5-6. Although there is emerging data supporting the usefulness of EBUS-TBNA in the investigation of these two pathologies, the efficacy results vary according to the target populations and certain parameters. Moreover, although a large randomized study demonstrated e superiority of EBUS-TBNA over conventional bronchoscopic sampling methods [ bronchoalveolar lavage (BAL) and trans-bronchial biopsies (TBB ] for the diagnosis of sarcoidosis , 7 the results suggest that there is still room for optimizing the performance of EBUS-TBNA [b] . In the field of lymphoma, obtaining large enough specimens for adequate subtyping also remains a concern. 8 In order to improve the performance of EBUS -TBNA , new needles have been developed with the aim to provide biopsies for histological evaluation rather than purely cytological. The ViziShot FLEX © (Olympus) 19 gauge needle (19 gauge or 19G) is a large needle, which can provide both tissue and needle aspiration , and has the advantage of being more flexible. For this study, the investigators want to compare the diagnostic yield of EBUS-TBNA using needle ViziShot FLEX 19G (1.11 mm) with that of the standard 22G needle ( NA-201SX; Olympus) , in the investigation of hilar or mediastinal lymphadenopathy suspected to be sarcoidosis or lymphoma.
This is a prospective randomised diagnostic clinical study to determine whether the use of a new flexible sampling needle can improve the yield of endobronchial ultrasound guided transbronchial needle aspiration (EBUS-TBNA). Patients undergoing EBUS-TBNA for clinical reasons as deemed necessary by the managing physician or multidisciplinary team will be randomised to undergo either EBUS-TBNA or Flex 19G EBUS-TBNA. The procedure will be performed under local anaesthesia using conscious sedation or general anaesthesia according to usual practice at the trial centre. Specimens will be placed in saline and formalin and forwarded to the pathology laboratory. The specimens will be spun down to create a cell pellet which will undergo cytological and histological examination as per usual protocol at the trial centre.The pathologist, who will be blinded as to which technique was used to obtain the sample, will grade the quality, quantity, and cellularity of the specimens.
The purpose of this study is to collect clinical, laboratory, and patient survey data from patients with Castleman disease to improve understanding, diagnosis, and treatment of the disease.
Lymph node metastasis is one of the most common sites to develop disease recurrence or progression after initial local treatment for primary solid malignancies or systemic treatment for advanced metastases. No specific treatment modality has been established as the standard therapy. Systemic therapy is usually considered since lymphadenopathy is considered as a sign of disease dissemination though aggressive local treatment, including surgical lymphoadenectomy or radical radiotherapy might result in long-term survival in selected patients. The concept of stereotactic ablative radiotherapy (SABR), a high dose of radiation targeted to a pathological entity and delivered in a few fractions, has proven so successful at treating both benign and malignant lesions that it changed the paradigm for radiation therapy. The radiobiology of SABR has been shown to be very favorable for tumor control. Clinical experiences suggested that SABR might offer excellent in-field tumor control with low toxicity profile in selected patients, although the majority of reports are retrospective and include small patients series with heterogeneous tumor sites and dose-fractionation schedules. At present, there is lack of validated prognostic factors to identify the patients who might benefit most from ablative local therapy for metastatic lymph node(s). The mechanism of effect of SABR on the cancer lesions is not yet clear. Apart from its direct effect on clonogenic cancer cells, an immune-mediated process was also hypothesized. Therefore, the present study is aimed to provide a better understanding about utilization of SABR for metastatic lymph node(s). The associated translational researches will also advance our knowledge in the immune system reactions to SABR.
The purpose of this study is to compare the diagnosis accuracy of modified wet suction technique and 5ml dry suction technique on solid occupying lesions.
The purpose of this study is to compare the diagnostic efficacy of nested and realtime polymerase chain reaction for Mycobacterium tuberculosis using EBUS-TBNA samples in patients with isolated intrathoracic lymphadenopathy.
The purpose of this study is to determine if fine needle aspiration or fine needle biopsy is more efficacious and cost-effective than the other while maintaining diagnostic accuracy in the setting of solid gastrointestinal lesions.