Infant with a back mass Pediatric Imaging Musculoskeletal January 4, 2023January 4, 2023 Axial (above), coronal (below left) and sagittal (below right) CT with contrast of the abdomen show a round, avidly enhancing soft tissue mass arising from the subcutaneous tissues to the left of midline. The diagnosis was fibromatosis. Related Published January 4, 2023January 4, 2023