We report a patient whose clinical, radiologic and histopathologic findings are compatible with severe atelosteogenesis (AT-I). The patient is compared with previously reported cases of AT-I, as well as with patients reported as having "boomerang" dysplasia. We conclude that it is reasonable to consider AT-I and boomerang dysplasia as part of a spectrum, probably reflecting a common etiology. More and detailed clinical, radiologic and histopathologic reports are needed to further clarify the relationship of AT-II and AT-III in this family of skeletal dysplasias.