A six-month-old female baby with a left coronary artery of anomalous origin in the right pulmonary artery, associated with a interventricular septal defect and a slight mitral pathology, was operated on direct implantation of the left coronary artery with a small segment of the pulmonary artery in the posterior wall of the ascending aorta and closure of the perimembranous defect was performed. The patient has been asymptomatic for one year since surgery.