cyclic neutropenia: neutropenia that occurs periodically
neutropenia: leukopenia in which the decrease is primarily in number of neutrophils (the chief phagocytic leukocyte)
ventricular septal defect: a common congenital heart defect; an abnormal opening in the septum dividing the ventricles allows blood to pass directly from the left to the right ventricle; large openings may cause congestive heart failure