Osteochondroma is the most common benign tumor or tumorlike lesion of bone. The radiographic appearance is often diagnostic, that is, a lesion composed of cortical and medullary bone with a cartilage cap. These lesions may be solitary or multiple, with the latter associated with the syndrome HME. Complications are commonly associated with its exophytic nature and include cosmetic and osseous de...

The majority of acromioclavicular joint cysts are the manifestation of underlying pathology of the rotator cuff. A chronic rotator cuff tear should be the first option in differential diagnosis, when facing such a condition, although this is not always the case. A case of a 67-year-old male patient, who abruptly developed a painless lump over his right acromioclavicular joint, is presented. Ima...

background: blood sucking mites are important avian ectoparasites which being found on bird species worldwide. their presence are problematic for the producers either through potential direct effects on weight gain, egg produc­tion, sperm production in roosters or as nuisance pests on worker handle hens and eggs. the aim of this study was pointing out of the status of haematophagus mites. metho...

In chickens, a single set of unique functional segments of both Ig H and L chain genes is rearranged during early embryogenesis to generate a pool of B cell progenitors that will be diversified in the bursa by gene conversion, forming the preimmune repertoire. After hatching, bursal cells are exposed to environmental Ags in the bursal lumen. We prepared B cells from each single bursal follicle ...

The migration of progenitor cells to specific microenvironments is essential for the development of complex organisms. Avian species possess a unique primary lymphoid organ, the bursa of Fabricius, that plays a central role in the development of B cells. B cell progenitors, however, arise outside the bursa of Fabricius and, during embryonic development, must migrate through the vasculature to t...

One of the complications of osteochondromas is the development of a bursa over the cartilaginous cap. We report a 15-year-old boy with a rapidly expanded adventitious bursitis overlying an osteochondroma of the humerus facing the thoracic wall, a location not previously reported for such bursa formation. Magnetic resonance imaging readily showed adventitious bursitis overlying the osteochondrom...

1Department of Biostatistics, Medical Faculty, Uludag University, 16059 Bursa, Turkey 2Department of Anatomy, Medical Faculty, Akdeniz University, Antalya, Turkey 3Department of Anatomy, Midwestern University, Glendale, AZ 85308, USA 4Department of Anatomy and Human Embryology, University of Valencia, Valencia, Spain 5Department of Anatomy, Medical Faculty, Gazi University, Ankara, Turkey 6Depa...