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BARCELONA -- Monitoring circulating tumor cells in women with breast cancer may be help guide treatment and refine prognoses, according to preliminary data from German investigators.

BARCELONA, Spain -- An investigational drug that blocks key cancer growth messages appears to give patients with metastatic hormone resistant prostate cancer an extra six months' survival.

OAKLAND, Calif. -- An immunochemistry test for fecal occult blood is significantly more accurate in detecting left-sided colorectal cancer than conventional testing, investigators here reported.

DENVER-A higher intake of omega-3 fatty acids found in fish was linked to a lower risk of pancreatic islet autoimmunity in children at genetic risk for type 1 diabetes, according to a preliminary study.

NEW YORK -- Proton magnetic resonance (MR) spectroscopy may eliminate 68% of biopsies for benign non-mass breast lesions found on standard MR imaging (MRI) without missing any cancers.

CHAPEL HILL, N.C. -- A sensitive sign of the early stages of Alzheimer's disease may be dampening of activity in the posteromedial cortices during a memory task, as seen by functional MRI, investigators here suggested.

WINSTON-SALEM, N.C. -- Activation of transglutaminase-2 (TG2) may trigger the mysterious and debilitating fibrosis that affects some end-stage renal patients, researchers here believe.

IOANNINA, Greece -- Newer chemotherapy drugs add months to the lives of patients with advanced colorectal cancer, but at a high cost in toxicity and complications, a meta-analysis showed.

BOCHUM, Germany -- Acupuncture offers an effective alternative to conventional therapy for low-back pain, investigators here reported.

ATLANTA -- The solution to a key mystery in smokers' lung cancer risk may lie in reduced transcription activity of certain antioxidant and DNA repair genes, investigators reported here.

Just over half of the respondents to a MedPage Today poll said they can interpret the data presented in published research, but there's no guarantee that study results will be translated into practice.

ATLANTA -- A protein expressed by virtually all lung cancers offers the potential for a serum biomarker that could lead to early diagnosis of more patients, investigators reported here.

ROCHESTER, Minn. -- A new set of rehabilitation standards for patients recovering from a serious cardiac event is designed to get more patients into rehab programs and to standardize their care.

LEIDEN, The Netherlands -- At least some cases of rheumatoid arthritis appear to be set in motion by mutations in two immunity-related genes, leading to increased susceptibility and severity of the disease.

CHICAGO -- Obesity in older age appears not to be the risk factor for cognitive decline that it is in middle age, researchers found.

ROCKVILLE, Md. -- The FDA has approved a genetic test to identify patients who have a higher risk of bleeding with warfarin (Coumadin).

NEW YORK -- A method to harvest stem cells from adult testes and reprogram them into functional tissue may provide an easily accessible and plentiful alternative to controversial embryonic stem cells, researchers said.

CHAPEL HILL, N.C. -- Repeat courses of prenatal corticosteroids, used to speed fetal lung development if there's risk of premature delivery, appear not to hinder mental or physical development.