Incidental finding of the sternalis muscle on chest multidetector-row computed tomography (MDCT): the diagnostic value of additional postprocessed MDCT images for an uncommon muscular variant.

We herein report two cases of incidental finding of the sternalis muscle in the right anterior chest wall on multidetector-row computed tomography (MDCT). We emphasize the diagnostic utility and value of additional postprocessed MDCT images, which can be easily created using volume data sets of MDCT, in establishing an accurate diagnosis of the sternalis muscle, an uncommon muscular variant.