Perioperative Platelet Inhibition With Acetylsalicylic Acid in Patients With Resectable Tumors of the Pancreatic Head

This randomized, controlled clinical trial compares the perioperative treatment with acetylsalicylic acid (aspirin) in patients with cancer of the pancreatic head. The main question it aims to answer is: Do patients treated perioperatively with aspirin develop less metastasis after curative resection of pancreatic head tumors?

Participants will be asked to :

* take a daily aspirin tablet starting 1-4 weeks before surgery until 6 months after surgery
* participate in regular follow-up visits.

Phase II Study Of Neoadjuvant Chemotherapy In Borderline Resectable Pancreatic Adenocarcinoma

The goal of this study is to determine the effect of chemotherapy on decreasing the size of unresectable pancreas cancer thereby allowing it to be surgically removed. In addition, this study may provide information on how tumors behave when exposed to certain types of chemotherapy.

Comparative Effectiveness Trial of Two Supportive Cancer Care Delivery Models for Adults With Cancer

This cluster-randomized comparative effectiveness trial compares a technology-based supportive cancer care (SCC) approach with a redesigned team-based supportive cancer care (SCC) approach.

Cyclophosphamide and Cryoablation in Treating Patients With Advanced or Metastatic Epithelial Cancer

RATIONALE: Drugs used in chemotherapy, such as cyclophosphamide, work in different ways to stop the growth of cancer cells, either by killing the cells or by stopping them from dividing. Cryoablation kills cancer cells by freezing them. Giving chemotherapy together with cryoablation may kill more cancer cells.

PURPOSE: This clinical trial is studying how well giving cyclophosphamide together with cryoablation works in treating patients with advanced or metastatic epithelial cancer.

A Dose Escalation Trial of Stereotactic Body Radiotherapy (SBRT) After Induction Chemotherapy for Locally Advanced Pancreatic Cancer

The purpose of this study is to find out the maximum dose of SBRT that can be safely given after chemotherapy for treatment of pancreatic cancer that cannot be removed surgically.

Primary Needle Knife Fistulotomy Versus Conventional Cannulation Method

The aim of this study are to evaluate the feasibility of needle knife fistulotomy (NKF) as an initial procedure for biliary access in patients with biliary disease who are at increased risk for post-endoscopic retrograde endoscopic retrograde cholangiopancreatography (PEP) and to assess the incidence rate of complications including PEP between NKF and conventional cannulation methods.

Selective Extended Dissection in Different Types of Pancreatic Head Cancer: A Retrospective Cohort Study.

Pancreatic ductal adenocarcinoma (PDAC) is a highly malignant tumor with relatively poor survival. Surgery is the first choice for the treatment of patients with early pancreatic cancer. However, the surgical approach and the extent of resection for patients with pancreatic cancer are controversial at present.

The investigators optimized the procedure of standard pancreaticoduodenectomy to selective extended dissection (SED), which is based on the extra-pancreatic nerve plexus (PLX) potentially invaded by tumor. The investigators retrospectively analyzed the clinicopathological data of patients with pancreatic adenocarcinoma who underwent radical surgery in our center from 2011 to 2020. Patients who underwent standard dissection (SD) were matched 2:1 to those who underwent SED using propensity score matching (PSM). The log-rank test and cox regression model were used to analyze survival data. In addition, statistical analyses were performed for the perioperative complications, postoperative pathology and recurrence pattern.

Evaluation of Nelfinavir and Chemoradiation for Pancreatic Cancer

This study is designed to evaluate if nelfinavir works as a radiation sensitizer in combination with gemcitabine (a chemotherapy). We are also looking to establish the maximum dose of gemcitabine that is tolerated with the nelfinavir and radiation therapy, so the dose of gemcitabine is increased based on how previous trial participants tolerated their dose of gemcitabine.

Eastern Ablation Registry for Solid Tumor (EAST)

Local tumor ablation is among the major anti-tumor modalities worldwide. Given the number of changes that have taken place in the field of tumor ablation in the past 10 years, it is our intention to ensure that this highly utilized standardization continues to remain relevant as it unites all investigators and clinicians practicing interventional oncology by providing a common language to describe therapies and outcomes, develop studies, and communicate with other medical specialties. In an attempt to attain greater Asian-wide adoption, the investigators will initiate the registry system for local tumor ablation in Taiwan, China, Korea, Singapore, Hong Kong and Thailand.

Intestinal Microbiome, Oral Microbiome, and Whole Blood Transcriptome Analyses in Gastrointestinal Malignancies

The primary objective of this prospective observational study is to characterize the gut and oral microbiome as well as the whole blood transcriptome in gastrointestinal cancer patients and correlate these findings with cancer type, treatment efficacy and toxicity. Participants will be recruited from existing clinical sites only, no additional clinical sites are needed.