Asynchronous asymmetric form of heterogeneous osteopetrosis: initial case expanded and a new case

We have discovered additional serial radiographs and clinical information o n the initial case of "regional osteopetrosis tarda" that has been included in several editions of Caffey's Pediatric X-Ray Diagnosis. A definite seco nd case was found after a search of radiology teaching files of other selec ted medical centers and the International Skeletal Dysplasia Registry. Anal ysis of the sequential unusual radiographic findings of the initial case an d the equivalent compelling findings of the second case justifies renewed a ttention to an asynchronous asymmetric form of heterogeneous osteopetrosis.