Related by context. Frequent words. (Click for all words.) 53 sigmoidoscopy 52 chest X rays 52 CT colonography 52 cystoscopy 52 chest x ray 52 CT angiography 52 coronary calcium 52 virtual colonoscopy 51 chest x rays 50 CT scans 50 PSA screening 50 pre cancerous lesions 49 unnecessary biopsies 49 postoperative complications 48 coronary angiography 48 breast biopsies 48 estrogen receptor negative 48 Radiation therapy 48 cancerous lesions 48 Biopsies 48 breast MRI 48 flexible sigmoidoscopy 48 screening mammograms 48 rectal cancer 48 needle biopsy 48 benign lesions 48 dense breasts 48 prostate biopsy 47 mammography 47 screening colonoscopy 47 coronary artery calcium 47 invasive cervical cancer 47 yearly mammograms 47 overdiagnosis 47 PSA velocity 47 BSGI 47 adenomas 47 mammograms 46 radiologists 46 gallbladder disease 46 endarterectomy 46 USPSTF 46 BRCA2 mutations 46 Polyps 46 radiation exposure 46 cardiologists 46 screening mammography 46 angiograms 46 lung cancer 46 dutasteride 46 squamous cell 46 breast conserving 46 biopsies 46 precancerous polyps 45 breast cancer recurrence 45 fecal occult blood 45 biopsied 45 hormone pills 45 postmenopausal breast cancer 45 bladder cancers 45 screening mammogram 45 nonfatal heart 45 Colonoscopies 45 CT scanning 45 noncancerous 45 liver biopsy 45 invasive breast cancer 45 prostate biopsies 45 imaging modality 45 mammogram 45 polyps 45 mammography screening 45 colorectal breast 45 untreated mice 45 prostate specific 45 endometrial cancer 45 PET scans 44 lumpectomies 44 PET scan 44 colorectal screening 44 intracerebral hemorrhage 44 nonsmokers 44 breast irradiation 44 ultrasound exam 44 lung tumors 44 liver metastases 44 tamoxifen 44 Mammograms 44 statins 44 BRCA mutations 44 colorectal tumors 44 skin cancers 44 cardiac catheterization 44 adenoma 44 bronchial thermoplasty 44 colorectal cancer 44 nondrinkers 44 yearly mammogram 44 spine fractures 44 angiography 44 thyroid cancers