Compliance with recommendations for giving vitamin K to newborn infants

Cancer is often seen in patients with deep venous thrombosis * This study shows that cancer is five times more commonly diagnosed within six months after deep venous thrombosis than a control group matched for age and sex * Most of the cancers were easily detected by routinemethods (history, physical examination, and laboratory tests) * Extensive screening of the 1383 patients with deep venous thrombosis would have resulted in beneficial earlier diagnosis in only two patients * Extensive screening of patients with deep venous thrombosis does not seem cost effective