A 32-yr-old male black-handed spider monkey () with marked kyphosis and reduced spinal range of motion developed intermittent regurgitation, which was managed with an acid reducer. Diffuse idiopathic skeletal hyperostosis (DISH) was suspected in this animal due to radiographically evident ossification of the anterior longitudinal ligament. At repeat radiographic evaluation 1.5 yr later, due to weight loss and increased frequency of regurgitation, the cervical spine was deviated ventrally and appeared to be impinging on the thoracic inlet. The spider monkey was humanely euthanized due to poor prognosis, and the presumptive diagnosis of DISH was confirmed via postmortem computed tomography and necropsy. DISH has not been reported in black-handed spider monkeys, and secondary dysphagia, an uncommon but recognized consequence in humans, has not been reported in a nonhuman primate. Earlier recognition of this possibly underreported disease process may increase treatment options and effectiveness of intervention.
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