Related by context. Frequent words. (Click for all words.) 58 CT scans 53 CT scan 52 Pap smear 52 chest X ray 51 biopsies 51 colonoscopy 50 pap smear 50 mammogram 49 echocardiogram 49 computed tomography 49 mammograms 49 angiogram 48 mammography 48 asymptomatic 48 biopsy 48 angiography 48 CAT scan 48 X rays 48 screening mammograms 48 X ray 47 CAT scans 47 Pap test 47 echocardiograms 47 x rays 47 MRI scans 47 biopsied 46 ECGs 46 colonoscopies 46 millisieverts 46 MRIs 46 PET scans 46 cytology 46 scans 45 EKGs 45 PET scan 45 respiratory symptoms 44 Pap tests 44 EKG 44 echocardiography 44 CT scanning 44 x ray 43 dense breasts 43 respiratory illnesses 43 radiation therapy 43 stool samples 43 spinal tap 43 radiographs 43 electrocardiogram 43 virtual colonoscopy 43 colon cancer screening 43 radiographic 42 ultrasounds 42 radiation exposure 42 pap smears 42 diagnoses 42 ultrasound 42 amniocentesis 42 precancerous lesions 41 cardiac catheterization 41 histology 41 checkups 41 rectal cancer 41 abnormalities 41 polyps 41 screening mammography 41 invasive breast cancer 41 tissue samples 41 Pap smears 41 acute coronary syndrome 41 Colonoscopy 41 checkup 41 adenomas 41 prostate specific antigen 40 Mammograms 40 lung cancer 40 digital mammography 40 Mammography 40 pneumonia 40 Barrett esophagus 40 respiratory illness 40 colorectal 40 pulmonary function 40 appendicitis 40 endoscopy 40 coronary disease 40 sputum 39 dose aspirin 39 uterine cancer 39 MRI 39 Pap 39 MRI scan 39 aspirin therapy 39 computed tomography CT 39 lung transplants 39 radiography 39 mammography screening 39 workup 39 screening 39 chronic cough 39 brain scans 39 magnetic resonance imaging