Related by context. Frequent words. (Click for all words.) 70 flexible sigmoidoscopy 65 sigmoidoscopy 61 fecal occult blood 60 blind randomized controlled 57 conventional colonoscopy 57 Colonoscopies 56 cholecystectomy 56 digital rectal examination 56 nephrectomy 56 colonoscopy 56 chest x rays 55 optical colonoscopy 55 breast biopsies 54 FOBT 54 Colonoscopy 53 TURP 53 liver biopsy 53 cystoscopy 53 endarterectomy 52 digital rectal exam 52 Biopsies 52 colorectal 52 chest x ray 52 colectomy 52 screening colonoscopy 52 fine needle aspiration 52 coronary angiography 52 postoperative complications 52 ductal 52 CT angiography 52 serum creatinine 51 ultrasonography 51 pre cancerous polyps 51 neoadjuvant therapy 51 Polyps 51 colorectal polyps 51 chronic rhinosinusitis 51 venous thrombosis 50 CT colonography 50 surgical excision 50 adenoma 50 thoracotomy 50 stent implantation 50 colorectal cancer CRC 50 D dimer 50 prostate biopsy 50 squamous 50 adenomas 50 cancerous breast 49 myocardial perfusion imaging 49 situ DCIS 49 screening mammogram 49 basal cell 49 biopsies 49 neoplasms 49 chemoradiotherapy 49 Colorectal 49 confidence interval #.#-#.# 49 laparotomy 49 thromboembolic events 49 bladder cancers 49 virtual colonoscopy 48 CT Scans 48 carotid endarterectomy 48 pleural mesothelioma 48 myomectomy 48 neoplasia 48 colon cancer screening 48 precancerous growths 48 DEXA 48 Biopsy 48 resected 48 intramuscular injections 48 prostate biopsies 48 PSA velocity 48 thrombolytic therapy 48 partial nephrectomy 48 uterine cancers 48 coronary revascularization 48 pulmonary TB 48 electrocardiography 48 precancerous polyps 48 lumpectomies 47 benign lesions 47 squamous cell 47 colonoscopies 47 computed tomography 47 breast irradiation 47 biopsied 47 benign breast 47 MDCT 47 CT computed tomography 47 lung transplants 47 carcinomas 47 computed tomography CT 47 grade dysplasia 47 postsurgical 47 spine fractures 47 Pap smear 47 BRCA mutations 47 warfarin therapy