A Problematic Tyrannosaurid (Dinosauria: Theropoda) Skeleton and Its Implications for Tyrannosaurid Diversity in the Horseshoe Canyon Formation (Upper Cretaceous) of Alberta.

Several published censuses have noted the presence of two tyrannosaurids, Daspletosaurus sp. and Albertosaurus sarcophagus, within the Upper Cretaceous Horseshoe Canyon Formation of Alberta. Although A.

Two cases of interathoracic pathologies presented as secondory hypertrophic osteoarthopathy.

The vast majority of cases of Hypertrophic osteoarthropathy are associated with intra thoracic neoplasms mainly broncogenic cancer and benign fibrous tumor. Less commonly extra thoracic pathologies can present with this disorder. Two cases are presented here.