WASHINGTON-Sentinel lymph node (SLN) mapping has been used in gastrointestinal cancers to identify patients with occult micrometastases who might benefit from adjuvant chemotherapy. Because rectal lymph drainage is "less predictable" than colon lymph drainage, the technique had been considered less suitable for rectal than for colon cancers, said Sukamal Saha, MD, of the McLaren Regional Medical Center of Michigan State University, Flint.
Colorectal cancer is the second leading cause of cancer-related death in the United States. An estimated 135,400 new cases and 56,700 deaths from colorectal cancer are expected during 2001. Since the mid-1990s, national guidelines have
At the Chemotherapy Foundation Symposium XVIII in New York City, researchers from the Arkansas Cancer Research Center, Cedars-Sinai Medical Center, M. D. Anderson, and the National Cancer Institute presented updated clinical trial data
The standard surgical treatment of distal, resectable, invasive rectal cancers is an abdominoperineal resection or a low anterior resection. Given the morbidity associated with these standard treatments and the frequent need
Colorectal carcinoma is one of the most common malignancies in the western world, and although fluorouracil (5-FU) has been used in its treatment for almost 40 years, new agents with significant activity have been introduced recently. Irinotecan (CPT-11, Camptosar), a topoisomerase I inhibitor, administered at 300 to 350 mg/m2 every 3 weeks is significantly more active than continuous-infusion 5-FU in patients who have experienced disease progression after conventional therapy with 5-FU. In comparison to best supportive care, irinotecan improves survival and preserves quality of life despite treatment-related toxicity. Moreover, the combination of irinotecan and 5-FU has been explored in a number of different schedules. In previously untreated patients, overall response rates are high. Irinotecan can also be combined with mitomycin (mitomycin-C [Mutamycin]), oxaliplatin, or raltitrexed (Tomudex). Oxaliplatin is a new-generation platinum compound that has demonstrated activity against colorectal carcinoma in preclinical trials. It has been evaluated as a single agent against advanced colorectal carcinoma in the salvage setting and also in combination with 5-FU as initial therapy for metastatic disease (where it shows significant activity). The toxicity profile of oxaliplatin (chiefly characterized by neurotoxicity) differs from that of irinotecan (primarily producing diarrhea) and the potential, therefore, exists for combining these agents or for exploiting their possible synergy with 5-FU. The introduction of these two new active agents of different pharmacologic classes promises to enable significant improvements in the treatment of patients with colorectal carcinoma. [ONCOLOGY 15(4):415-434, 2001]
In the largest prospective study of cigarette smoking and colorectal cancer mortality, researchers from the American Cancer Society report finding strong evidence that cancers of the colon and rectum are, in part, smoking related.
ROCKVILLE, Md-The FDA has approved the marketing of the Optical Biopsy System (SpectraScience, Inc.), a laser-based technique designed to assist physicians in deciding whether certain colon polyps are precancerous and should be removed. The company chose the trademark name Optical Biopsy System after the FDA refused to accept the name "Virtual Biopsy System" for its product.
Ateam of European researchers recently reported that the addition of oxaliplatin to the standard regimen for advanced colorectal cancer of fluorouracil (5-FU) and leucovorin doubled the response to therapy and significantly prolonged progression-free survival, compared to leucovorin and 5-FU alone.
The world’s population is aging. Older age is associated with an increase in the incidence of cancer, especially cancer of the breast, lung, prostate, and colon. The management of older patients with cancer is biased by the
BOSTON-HIV-positive patients often cannot tolerate treatment for anal squamous cell carcinoma and have a worse prognosis than other patients, according to two studies presented at the American Society of Colon and Rectal Surgeons (ASCRS) annual meeting.
Capecitabine (Xeloda) is a new, orally administered, enzyme-activated fluoropyrimidine carbamate designed to generate high levels of fluorouracil (5-FU) in tumor cells. Selective tumor activation of 5´-deoxy-5-fluorouridine,
Capecitabine (Xeloda) is a new, orally administered, enzyme-activated fluoropyrimidine carbamate designed to generate high levels of fluorouracil (5-FU) in tumor cells. Selective tumor activation of 5´-deoxy-5-fluorouridine,
FLINT, Michigan-The debate continues on the use of sentinel lymph node (SLN) mapping in colon cancer. How many nodes need to be analyzed to improve the outcome for this patient group? The current thought is the more nodes harvested, the better the predictive value, and Dr. Thomas LeVoyer made the case that removing more nodes yields a better survival benefit.
PHILADELPHIA-Nearly 45% of all cases of colon cancer have lymph node involvement. Surgical resection is the gold standard of treatment, with adjuvant chemotherapy used in an attempt to improve survival in patients with late-stage disease, but the outlook is often dismal.
NEDLANDS, Australia-If the implications of an Australian study are validated in further prospective studies, microsatellite instability (MSI) could potentially predict those patients with Dukes’ C and possibly Dukes’ B colorectal cancer who will respond best to chemotherapy.
NCI Colorectal Cancer Group Outlines a Decade of Research Goals
AstraZeneca has announced the launch of a new website that will help keep researchers and physicians up to date on
NEW ORLEANS-A prospective study in colorectal cancer patients has found that sentinel lymph node (SLN) mapping correctly predicts the presence or absence of nodal metastases, with a very low incidence of skip metastases (disease in a non-SLN), as it does in melanoma and breast cancer.
The American Cancer Society’s translation of the National Comprehensive Cancer Network (NCCN) guidelines
Patients with metastatic colorectal cancer may benefit from therapy with the oral anticancer agent capecitabine
Microsatellite Instability Linked to Longer Colon Cancer Survival
Either alone or in combination with other antineoplastics, fluorouracil (5-FU) has been the mainstay of treatment of gastrointestinal, breast, and head and neck cancers for the past 40 years. Numerous active 5-FU schedules are in
The US Food and Drug Administration (FDA) has approved irinotecan (Camptosar) as first-line therapy for patients with metastatic colorectal cancer in conjunction with fluorouracil (5-FU) and leucovorin. The approval follows unanimous
New data from three additional trial studies confirm that long-term use of exisulind (Aptosyn) prevents the formation of precancerous colorectal adenomatous polyps in patients with familial adenomatous polyposis (FAP). These clinically significant
NEW YORK-Patients with advanced colorectal cancer have a median survival of only 12 months with single-agent chemotherapy. New drugs and new drug combinations are being tested in an attempt to find more effective treatments for the disease. A panel of researchers discussed trials of raltitrexed (Tomudex) in combination with other drugs at the Chemotherapy Foundation Symposium XVII.
