Assessment of esophageal motility disorders in chronic renal failure Evaluation of tissue plasminogen activator inhibitor (-1) and fibrinogen in chronic renal failure under regular haemodialysis Virtual colonoscopy as anew diagnostic tool in cancer. Detection of occult corpulmonale using dobutamine stress Echo-cardiography in COPD and schistosomal hepatic fibrosis patients Risk factors and intrafamilial transmission of HCV infection. Left ventricular mass and systolic function in normotensive obese children Echo-Doppler study of cardiac function in Egyptian patients with non-alcoholic liver cirrhosis with and without ascites. Markers of nephropathy in children with insulin-dependent diabetes