CTICasesSpinal Muscular Atrophy Type 2
Imaging findings
Chest CT and radiograph show severe elongation and thoracic deformity with inward collapse of the ribs. There is profound atrophy of the chest wall and intercostal muscles, while the diaphragmatic crura are robust and spared.
Key takeaways
Spinal muscular atrophy (SMA) Type 2 is a neuromuscular disorder where the intercostal/chest wall muscles are severely affected, leading to characteristic thoracic deformities and rib collapse, while the diaphragm is typically spared.
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