Butterfly and lumbosacral transitional vertebrae

Case contributed by Dr Vikas Shah


Undergoing CT colon for change in bowel habit.

Patient Data

Age: 70 years
Gender: Female

Selected images from CT colon

These selected images covering the lumbosacral spine show that L4 has a butterfly vertebral body shape with thin bony bridges anteriorly and posteriorly, and a gap centrally. The right transverse process of L5 is expanded and forms a pseudoarticulation with S1.

Case Discussion

This study shows two incidental findings of the lumbosacral spine; a butterfly vertebral body and a type IIa lumbosacral transitional vertebral body (Castellvi classification).

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Case information

rID: 59067
Published: 19th Mar 2018
Last edited: 14th Aug 2019
Inclusion in quiz mode: Included

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