Related by context. Frequent words. (Click for all words.) 52 CT colonography 50 sigmoidoscopy 49 fecal occult blood 49 colonoscopy 48 virtual colonoscopy 48 Colonoscopy 47 noninvasive 46 computed tomography CT 46 cystoscopy 46 Pap smear 45 Radiation therapy 45 CT scans 45 Hormone therapy 44 chest x ray 44 X ray 44 Biopsy 43 Biopsies 43 colorectal screening 43 Pap test 43 CT scanning 43 liver biopsy 43 chest x rays 43 colon cancer screening 43 unnecessary biopsies 43 diagnostic tests 43 colonoscopies 42 non invasive 42 Hormone replacement 42 dense breasts 42 cervical cancer screening 42 FDG PET 42 capsule endoscopy 42 imaging scans 42 dabigatran 41 shingles vaccine 41 computed tomography 41 breast MRI 41 prostate specific antigen 41 endoscopic procedures 41 pre cancerous lesions 40 Pap smears 40 diagnostic 40 X ray machines 40 scientifically valid 40 PET imaging 40 PET scan 40 CT scan 40 coronary angiography 40 breast ultrasound 40 DXA 40 endoscopy 40 cholesterol lowering drug 40 chest X rays 40 human papillomavirus HPV 40 nonsurgical 40 ultrasonography 39 CAT scan 39 adjuvant therapy 39 overtreatment 39 mammography 39 amalgam fillings 39 FOBT 39 colon cleansing 39 Liposuction 39 prostate specific 39 needle biopsy 39 MRIs 39 USPSTF 39 magnetic resonance imaging 39 ultrasound 39 Magnetic resonance imaging 39 PET scans 39 SPECT 39 pap smear 39 Mammograms 39 mammograms 38 x ray 38 digital rectal exam 38 mammogram 38 biopsy 38 endoscopes 38 bronchoscopy 38 scientifically rigorous 38 breast biopsies 38 intensity modulated radiation 38 BSGI 38 MR imaging 38 positron emission tomography PET 38 MDCT 38 biopsies 38 imaging modalities 38 prescribe antibiotics 38 PET CT 38 precancerous polyps 38 body scanners 38 screening mammography 38 X ray scanners 38 radiation therapy 38 carcinogenicity 38 carotid endarterectomy 37 rectal exam