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HOUSTON -- When more than 20 lymph nodes are removed and evaluated during surgery for colon cancer, there is a 14% increase in five-year survival, reported investigators here.

MINNEAPOLIS -- In household lore, duct tape has a million uses, but it is still knocking on the medicine cabinet door as a cure for common warts, according to researchers here.

CHICAGO -- More than five million older Americans are living with Alzheimer's disease or other dementias, a 10% increase in prevalence from just five years ago, according to an estimate commissioned by the Alzheimer's Association.

LEIDEN, The Netherlands -- For early rheumatoid arthritis, aggressive combination therapy can slow progression to joint damage, investigators here found.

WASHINGTON -- Simultaneous resection of a colorectal lesion and a small hepatic metastasis is safe, but when the liver lesion is more extensive separate procedures may be the better course, a multicenter group found.

NEW YORK -- Men with breast cancer show the same racial disparities in survival as do women with the disease, according to a small population-based study.

ROCKVILLE, Md. -- The FDA has approved eculizumab (Soliris), tbe first of a new class of natural immune system blockers, for paroxysmal nocturnal hemoglobinuria, a rare blood disorder that can lead to disability and death.

TAGAWA, Japan -- Low-dose bisphosphonate therapy may help reduce the high rate of hip fractures among men with Parkinson's disease, Japanese researchers found.

ANN ARBOR, Mich. -- The entire body is subject to premature aging from cigarette smoking, irrespective of sun-exposure, researchers here found.

TOKYO -- Diets rich in soy may protect men against localized prostate cancer, but paradoxically may increase the risk for advanced prostate cancer, Japanese researchers reported.

TURIN, Italy -- For patients with newly diagnosed multiple myeloma, a hematopoietic stem-cell autograft followed by an allograft from an HLA-identical sibling outperformed standard bone-marrow ablation and autografts, found investigators here.

SEATTLE -- Obese men diagnosed with prostate cancer in middle age are at a 2.6-fold higher risk of dying from the disease than are patients of normal weight, according to a case-control study.

MANCHESTER, England -- Failures of total hip replacements are significantly more likely to occur when patients carry variants in genes encoding for collagen breakdown and the vitamin D receptor, according to investigators here.

NEW BRUNSWICK, N.J. -- A weekend admission to the hospital with a heart attack is associated with higher death rates and less use of percutaneous coronary interventions, researchers reported.

DURHAM, N.C. -- Even with managed care coverage, patients generally had treatment when visiting a primary care physician's office that met expectations, according to investigators here.

BOSTON -- Supplemental beta carotene over 12 years had no beneficial effect on the occurrence rate of age-related maculopathy, found researchers here.

SPOKANE, Wash. -- Whether anesthesiologists or nurse anesthetists were on the job, there were no significant differences during caesarean births in the rate of anesthetic complications over 12 years, according to investigators here.

CHAPEL Hill, N.C. -- Childbirth and pregnancy complications were responsible for the major part of emergency Medicaid spending for undocumented and recent immigrants in North Carolina, according to a study.