A4 year old boy with a cough and a fever is referred by his general practitioner. On auscultation of his chest there are focal signs suggestive of a lower respiratory tract infection; a chest x ray examination confirms right lower lobe collapse and consolidation. He is started on oral antibiotics and discharged home within 24 hours. He is given a follow up appointment in four weeks time in the “registrar clinic” to be reviewed after having a repeat chest x ray …