Presentation
Chest wall deformity.
Patient Data
Age: 3 years
Gender: Male
From the case:
Severe pectus excavatum
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Concave depression of the lower aspect of the sternum with rib deformity, causing narrowing of the anteroposterior length of the chest with left-sided heart displacement.
Mild left-sided thoracic scoliosis with no vertebral anomalies.
The maximal transverse diameter of chest measures 16.91 mm and the narrowest AP length of the chest measures 3.38 mm.
From the case:
Severe pectus excavatum
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The annotated image shows:
the maximal transverse diameter of the chest = 16.91 mm
the narrowest AP length of the chest = 3.38 mm
the Haller index (maximal transverse diameter/narrowest AP length of chest) = 5 (normal ≤ 2)
Case Discussion
CT features of a pectus excavatum with a Haller index of 5.