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Gastrointestinal stromal tumor (GIST) is the most common nonepithelial tumor of the gastrointestinal tract. The majority of these tumors stain positive for the CD117 antigen to the KIT protein and have become a well-documented clinical entity. The dysregulated KIT protein is oncogenic and is an...
Colorectal cancer is an ideal model in which to study malignant progression from the molecular-genetic perspective because different stages of the same malignancy coexist within each patient. Approximately 75% of colorectal cancer cases are sporadic and the remaining are familial disease, yet...
Randomized prospective trials have shown the benefits of adjuvant radiotherapy in decreasing local recurrence rates in stage II and stage III rectal cancer. However, some patients with stage II lesions have relatively low risks of local recurrence when treated with modern surgery alone. This...
The current standard of care for the treatment of metastatic colorectal cancer involves at least six different regimens, and with the advent of new therapies, including biologic therapies, patients are projected to live beyond an average of 2 years. Data suggest a synergy between the biologics,...
Techniques of liver resection for colorectal cancer metastases continue to evolve, and the range of patients who benefit from such treatment expands. With improvements in preoperative and intraoperative imaging, surgical strategies for reducing blood loss and maximizing excision of disease and...
Delivery of chemotherapeutic agents directly into the peritoneum to treat tumors localized to the abdominal cavity is a concept tested initially in clinical practice in the early 1950s. However, thorough investigation of the drawbacks and potential of intraperitoneal (IP) drug administration was...
Tumor angiogenesis has been related to the initiation as well as progression toward more aggressive behavior of human tumors. We will discuss genetic events underlying the initiation and progression of colorectal and pancreatic adenocarcinoma with a particular focus on the modulation of...
Studies have begun to examine stop-and-go or intermittent chemotherapy strategies in patients with advanced colorectal cancer. Such strategies potentially may reduce cumulative toxicities associated with long-term therapies. In addition, planned interruptions in treatment would be expected to...
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