Intercostal nerve neurilemmoma

Intercostal nerve neurilemmomas, also known as intercostal nerve schwannoma or neurinoma, are nerve sheaths encapsulated tumours affecting intercostal nerves.  

Please refer to the article on schwannomas for a broad discussion about these tumours. 

They account for less than 10% of primary neural tumours that arise in the chest (majority arise from the mediastinum 3). They occur commonly occur between 20 and 50 years of age 6

Most patients tend to be asymptomatic as lesions are slow-growing 4. Some patient may have pain 7.

Please refer to the general article on schwannomas.

Lesions are usually solid well-circumscribed masses with homogeneous contrast enhancement. They are usually single but can rarely be multiple 4.

Solid nodules iso to slightly hyperdense showing homogeneous enhancement. 

  • T1: iso or slightly hyperintense compared to the adjacent muscles
  • T2: hyperintense compared to the adjacent muscles
  • T1 C+ (Gd): homogenous contrast enhancement

On imaging consider localised pleural masses including:

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Article information

rID: 29431
System: Chest
Section: Pathology
Tag: cases
Synonyms or Alternate Spellings:
  • Intercostal nerve neurilemomas
  • Intercostal nerve schwannoma
  • Intercostal nerve schwannomas

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