Episternal ossicles

Case contributed by Wouter Kroon


Asymptomatic, an incidental finding of episternal ossicles.

Patient Data

Age: 60 years
Gender: Female

Axial and sagittal images show small pyramidal-shaped bones, bilateral and posterosuperior to the sternal manubrium. The small bones have cortical bone and fatty marrow. These bones are episternal ossicles.

Case Discussion

Episternal ossicles are accessory bones that result from supernumerary ossification centers. They are found in 1.5 - 4% of the population. They may be uni- or bilateral and are usually pyramidal in shape. Their diameter is around 2-15 mm. Episternal ossicles are easily seen on CT, and their differential includes calcified lymph nodes, fracture fragments, vascular calcifications and foreign bodies 1.

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Case information

rID: 29467
Published: 27th May 2014
Last edited: 3rd Apr 2020
Inclusion in quiz mode: Included

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