Cervicothoracic sign

The cervicothoracic sign, a variation of the silhouette sign, refers to visualization of a lesion above the level of the clavicle, indicating the abnormality is located posteriorly.

The anterior mediastinum ends at the level of the clavicles. Thus, the upper border of an anterior mediastinal lesion cannot extend above the clavicles. Any lesion with a discernible upper border above that level must be located posteriorly in the chest, i.e. apical segments of upper lobes, pleura, or posterior mediastinum 3.

History and etymology

Benjamin Felson (1913-1988) was an American radiologist who is believed to be the first to describe this sign.


Article information

rID: 19630
System: Chest
Section: Signs
Tag: sign, cases
Synonyms or Alternate Spellings:
  • Cervico-thoracic sign

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Cases and figures

  • Case 1: multinodular goiter
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  • Case 2: ganglioneuroma
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