- cold nodule
- colectomy
- colitis
- collagen
- collagen / aloe vera / vitamin E / lidocaine topical hydrogel
- collagen disease
- collagenase
- collarbone
- collecting duct
- colloidal gold-bound tumor necrosis factor
- coloanal anastomosis
- coloanal pull-through
- colon
- colon cancer
- colon crypt
- colon polyp
- colonoscope
- colonoscopy
- colony-stimulating factor
- colorectal
- colorectal cancer
- colostomy
- colposcope
- colposcopy
- Colprosterone
- coma
- Combidex
- combination chemotherapy
- Combotox
- combretastatin A1 diphosphate
- combretastatin A4 phosphate
- comedo carcinoma
- comfort care
- common bile duct
- common hepatic duct
- Community Advisory Board
- comorbidity
- comparative anatomy
- compassionate use trial
- complement protein
- complementary and alternative medicine
- complementary medicine
- complete blood count
- complete hysterectomy
- complete metastasectomy
- complete prevalence
- complete remission
- complete response
- complex decongestive therapy
- compliance