Study index: 96-8 Vendor KODAK Modality CR Examination Portable chest x-ray History Six month old, with a history of tetralogy of Fallot. Findings This film was reviewed in comparison with the previous radiographs, including the most recent prior study. The lungs are well aerated, with the remaining pneumothorax evident in the lateral portion of the right lung, with no significant change since the previous study. A small right retrocardiac density is evident on this examination at the site of the prior placement of the chest tube. This could represent blood, an infiltrate, or atelectasis in that region. The resolution of the left pneumothorax evident on the study of 07/31/1995 is again noted. A pneumothorax in the lateral right lung, with no change from the previous study. Absence of the chest tube previously evident in the medial right lung, with remaining retrocardiac density, possibly bleeding, infiltrate, or atelectasis. Resolution of a prior left pneumothorax.