- Cancer
- Carcinoma testis
- Cartoid Stenosis
- Cerebral Venous Thrombosis
- Chicken Pox
- Childhood Obesity
- Chorioamnionitis
- Chronic Fatigue Syndrome
- Chronic Kidney Disease
- Chronic Leukemia
- Chronic Obstructive Pulmonary Disease
- Chronic Pancreatitis
- Chronic Pelvic Pain
- CNS Tuberculosis
- Coarctation of the Aorta
- Colorectal Cancer
- Combined Hyperlipidemia
- Congenital Adrenal Hyperplasia
- Congenital Heart Diseases
- Congenital Neck Masses
- Congo Virus
- Cor Triatriatum
- Coronary Artery Disease (CAD)
- Crohn's Disease
- Cruciate Ligament Injury
- Cushing's Syndrome
