Active clinical trials for "Neoplasms"

Bowel dysfunction is common after a restorative rectal cancer resection. Neoadjuvant radiotherapy is an influential factor that impairs bowel function and quality of life. However, almost half patients who have received primary surgery with preoperative radiotherapy are able to restore a good or moderate bowel function in the long term. This multicenter observational study aims to identify the risk factors of severe bowel dysfunction after rectal cancer resection and neoadjuvant radiotherapy, in accordance with the LARS score, and to build a model that predicts long-term major LARS in the early stage of follow-up. Development and validation cohorts are enrolled from tertiary hospitals in China.

To establish and validate a suitable and practical nomogram for primary hospitals to predict the risk of central lymph node metastasis (CLNM) among thyroid papillary carcinoma (PTC) patients based on clinical and ultrasound characteristics among Chinese population，1000 PTC patients were retrospectively reviewed who underwent bilateral thyroidectomy or lobectomy plus central lymph node dissection（CLND） between June 2014 and September 2019 in Sun Yat-sen Memorial Hospital (Guangzhou, South China), and then LASSO regression analysis was performed to screen out the possible predictors. Another 200 PTC patients from the First Affiliated Hospital of Zhengzhou University (Zhengzhou, North China) who underwent bilateral thyroidectomy or lobectomy plus CLND between March 2019 and November 2020 were enrolled to construct the nomogram. The area under the receiver operating characteristic (ROC) curves (AUC), calibration curves and decision curve analysis (DCA) were used to evaluate the nomogram.

Contrast-enhanced intraoperative ultrasound (CE-IOUS) plays an increasingly important role in the surgical therapy planning of primary liver lesions as well as liver metastases. The present study was designed to evaluate the significance of CE-IOUS by specificity and sensitivity and particularly the impact it exerts on the surgical strategy. A secondary aim was assessing the outcome relevance of surgeries influenced by CE-IOUS.

To assess the size of the common bile duct in a large cohort of patients with jaundice following a malignant tumor of the head of the pancreas or the distal bile duct receiving a diagnostic EA for biopsy and / or for evaluation of tissue resectability.

Single-center cohort study of long-term results after pit-pcik for pilonidal sinus disease.

Standard treatment for oropharynx cancer is radiotherapy by intensity modulation with only one planification before treatment. Adaptative radiotherapy integrates one or several planifications during treatment radiotherapy in order to take into account anatomic modifications that occurs. Adaptative radiotherapy is very expensive, complex and is consuming human resources as well as equipment. ARTIX study (NCT01874587) entitled "Phase III trial testing the benefit of intensity-modulated radiotherapy with weekly replanifications versus intensity modulated radiotherapy with only one planification in locally advanced oropharynx carcinoma for decreasing xerostomia" is completed and clinical data from this study are used to analyse if xerostomia is decreased when adaptative radiotherapy is used. ARTOME study will assess cost-efficiency and cost utility between standard treatment (one pretherapeutic planification) and experimental treatment (weekly replanifications during treatment). Clinical data from ARTIX study will be used for ARTOME study.

De-identified whole blood and serum samples are collected for the purpose of evaluating the performance (sensitivity/specificity) of the HelioLiver Test for the detection of hepatocellular carcinoma (HCC).

The aim of this study was to investigate whether NETs markers can enhance predict portal vein tumor thrombosis in patients with live cirrhosis, so as to establish a novel predictor to guide clinical decision-making.

The purpose of the research is to evaluate the use of a PSMA PET/CT (Prostate Specific Membrane Antigen Positron Emission Tomography/Computerized Tomography) scan in the diagnosis of HCC (hepatocellular carcinoma) and comparing it to standard scanning techniques with CT (Computed Tomography) or MRI (Magnetic Resonance Imaging).

To search for a genetic marker of B-cell leukemias and lymphomas in children of Kazakh nationality, a single nucleotide polymorphism (SNP) analysis of DNA obtained from the peripheral blood of patients with B-cell leukemias and lymphomas in children of Kazakh nationality and normal control will be performed.