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MEXICO CITY -- A difference in genetic patterns may explain why some idiopathic pulmonary fibrosis patients, especially men who smoke, die more quickly after diagnosis than others do.

LEBANON, N.H. -- Surgery for degenerative spondylolisthesis with spinal stenosis is significantly more effective against pain than usual nonsurgical care, though one-year outcomes appear equal for sciatica.

ST. LOUIS -- The appearance of passive personality traits in an older adult with signs of dementia may signal the presence of Lewy bodies rather than Alzheimer's disease, said investigators here.

STANFORD, Calif. -- Treating inborn urea-cycle disorders with intravenous phenylacetate and benzoate, an alternative way to remove toxic ammonia, has saved more than 80% of patients, mainly children, researchers here reported.

A prediction model and simple scoring form developed by Dutch rheumatologists can help physicians determine which early-arthritis patients are most likely to develop rheumatoid arthritis and should therefore receive prompt, aggressive treatment.

SEATTLE -- The drug temsirolimus (Torisel) prolongs survival in patients with metastatic renal cell carcinoma, researchers here reported today.

KING OF PRUSSIA, Pa. -- Despite reports linking rosiglitazone (Avandia) to increased risk of cardiac events, the data safety monitoring boards assessing that risk in three studies of the drug agreed that the trials should continue.

ABERDEEN, Scotland -- People with a family history of Parkinson's disease may be more susceptible to it after pesticide exposure or repeated blows to the head, European investigators reported.

BOSTON -- There's more evidence to support the inflammatory hypothesis of Alzheimer's disease, a finding that emerged from the Framingham Heart study cohort.

BOSTON -- Noninvasive uterine fibroid surgery using MRI-guided ultrasound appears to significantly reduce symptoms but does not yet measure up to other minimally invasive fibroid procedures.

ATLANTA -- The number of U.S. households with smoke-free homes in the U.S. increased significantly to 72.2% in 2003 from 43.2% in 1992, according to the CDC.

CHICAGO -- Community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) may target certain vulnerable populations and does not displace community-acquired methicillin-sensitive S. aureus.

SAN DIEGO -- Aripipraloze (Abilify) was significantly superior to placebo at treating schizophrenia among adolescents, an off-label use, reported investigators here.

BOSTON, May 25 -- At relatively high daily doses, coffee -- whether regular or decaf -- may protect against gout, researchers here found.

TORONTO -- Workers are less likely to drink heavily, frequently, or at work if the companies discourage drinking, researchers found.

CLEVELAND, May 25 -- Steven E. Nissen, M.D., a cardiologist best known for exposing heart risks in the medicine chest, has a message for the pharmaceutical industry, "I'm not anti-drug."

ANAHEIM, Calif. -- Injection of botulinum toxin A directly into the prostate provided relief from refractory benign prostatic hypertrophy symptoms for up to a year, found a small study in Taiwan.

WASHINGTON -- A common treatment for constipation may also be effective in patients with irritable bowel syndrome (IBS) who have constipation-like symptoms caused by pelvic floor dyssynergia.