Presentation
Chest wall deformity.
Patient Data
Age: 20 years
Gender: Male
From the case:
Pectus excavatum
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Frontal

Normal lungs. The right heart border is indistinct on frontal projection. On lateral projection, the typical appearance of pectus excavatum can be seen.
Case Discussion
On frontal x-ray films, indistinct right heart border, displacement of the heart on the left side, obliteration of the descending aorta interface, the horizontal appearance of the posterior ribs with downward sloping of the ribs anteriorly giving the reverse-7 sign suggests the diagnosis.