CTICasesBenign Intercostal Schwannoma
Imaging findings
Chest CT shows a focal, well-circumscribed extrapleural soft tissue mass in the chest wall, displaying the incomplete border sign and obtuse angles with the chest wall. There is no rib destruction or expansion. Pathology shows a spindle cell tumor positive for S100.
Key takeaways
Benign nerve sheath tumors (schwannomas) can arise from the intercostal nerves and present as incidental extrapleural masses. They typically demonstrate benign features such as obtuse margins with the pleura and absence of adjacent rib invasion.
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