Bifid Intrathoracic Rib: a Case Report and Classification of Intrathoracic Ribs

Hiroshi Kamano; Takuo Ishihama; Hidenobu Ishihama; Yoshitsugu Kubota; Terukazu Tanaka; Katashi Satoh

doi:10.2169/internalmedicine.45.1502

CASE REPORTS

Bifid Intrathoracic Rib: a Case Report and Classification of Intrathoracic Ribs

Hiroshi Kamano, Takuo Ishihama, Hidenobu Ishihama, Yoshitsugu Kubota, Terukazu Tanaka, Katashi Satoh

Author information

Keywords: bifid intrathoracic rib, intrathoracic rib, bifid rib, Hox, Pax

JOURNAL OPEN ACCESS

2006 Volume 45 Issue 9 Pages 627-630

DOI https://doi.org/10.2169/internalmedicine.45.1502

Details

Abstract

Bifid intrathoracic rib is a very rare anomaly of the ribs that is characterized by an osseous prominence of a rib into the thoracic cavity. We report a 21-year-old woman with bifid intrathoracic rib arising from the anterior-lateral portion of a depressed 4th rib, based on findings from chest radiography and computed tomography (CT). This is only the second reported case of this type of intrathoracic rib worldwide. We discuss differential diagnoses for this case and suggest a classification of intrathoracic rib from the perspective of morphology and developmental biology.

Corresponding author

Register with J-STAGE for free!