Abstract：
Tracheal luminal stenosis can cause clinical respiratory distress in wild birds. We describe a case of tracheal stenosis due to diffuse ossification with osteopetrosis of tracheal rings in a yellow-crowned parrot (Amazona ochrocephala) with a history of chronic respiratory distress and death after development of marked dyspnoea. An ante-mortem radiographic examination revealed that the tracheal rings were radiopaque and that there were multiple areas of osteopenic change in long bones. At necropsy, there was stenosis of the tracheal rings characterized by complete replacement of cartilage by thickened compact bone with osteopetrosis and bone necrosis. The clinical respiratory distress and death of the parrot were associated with tracheal luminal stenosis due to thickening of the tracheal rings by diffuse ossification with osteopetrosis.
摘要：
气管腔狭窄可引起野鸟的临床呼吸窘迫。我们描述了一例由于黄冠鹦鹉（Amazonaochrocephera）的弥漫性骨化和气管环骨硬化而导致的气管狭窄，有慢性呼吸窘迫病史，并在出现明显的呼吸困难后死亡。尸前影像学检查显示，气管环是不透射线的，长骨中存在多个骨质疏松改变区域。尸检时,气管环狭窄，其特征是增厚的致密骨完全替代了软骨，并伴有骨质疏松和骨坏死。鹦鹉的临床呼吸窘迫和死亡与气管腔狭窄有关，这是由于弥漫性骨化伴石骨病导致的气管环增厚所致。
