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E Stauber M Papageorges R Sande L Ward 《Journal of the American Veterinary Medical Association》1990,196(6):939-940
A 10-year-old female cockatiel in a thin and depressed condition and with a 1 X 2-cm soft abdominal swelling was hospitalized. Radiography revealed a well-circumscribed mass containing punctate areas of mineralization, displacing the gizzard cranially in the caudodorsal portion of the abdomen. There was bilateral, symmetric, generalized, increased medullary opacity of the radius, ulna, carpometacarpus, femur, tibiotarsus, and tarsometatarsus. These findings were compatible with polyostotic hyperostosis secondary to an estrogen-secreting tumor. Euthanasia and necropsy were requested. A small area of neoplastic cells in the oviduct was identified histologically, but most of the tissue mass consisted of necrotic cellular debris. There was no metastasis. Sagittal secretions of decalcified radiopaque bones revealed up to 60% filling of medullary cavities with bone spicules. Although clinical and radiographic findings were compatible with an estrogen-secreting tumor, osteopetrosis, metastatic neoplasia, hypertrophic osteopathy, and metabolic bone disease were included in the initial differential diagnosis. The absence of metastasis and the confinement of the tumor within the oviduct would have made surgical removal a possible approach to treatment. 相似文献
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Marc Papageorges DMV MSc Patrick R. Gavin DVM PhD Ronald D. Sande DVM PhD David D. Barbee DVM MS 《Veterinary radiology & ultrasound》1988,29(6):269-271
A simple and inexpensive modification of the ultrasound-guided fine-needle aspiration biopsy technique using an extension tube attached to the needle is described. One operator can easily manipulate the ultrasound transducer and biopsy needle while monitoring the entire procedure. This simple modification was found to facilitate ultrasound-guided fine-needle aspiration. 相似文献
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A Bohn M Papageorges B D Grant 《Journal of the American Veterinary Medical Association》1992,201(2):305-306
Ultrasonography and radiography were used to diagnose bicipital tenosynovitis and humeral osteitis in a horse with a history of lameness of 7 weeks' duration. Surgical exploration confirmed the diagnosis. 相似文献
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Entéropathie, avec perte de protéines, secondaire à une lymphangiectasie intestinale, chez trois chiens 
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下载免费PDF全文 Malo D Gosselin Y Papageorges M 《The Canadian veterinary journal. La revue veterinaire canadienne》1982,23(4):129-131
Protein-losing enteropathy secondary to intestinal lymphangiectasia in three dogs
Three cases of protein-losing enteropathy secondary to intestinal lymphangiectasia in the dog are presented.
In the three cases, common clinical findings were nonresponsive diarrhea and weight loss. Subcutaneous edema was observed in case 1. Polyphagia and polydipsia were evident in cases 2 and 3.
Serum examinations revealed low values of protein with a normal albumin/globulin ratio. There was histopathological evidence of dilatation of lacteals, as well as plasma cell and lymphocyte infiltration in the small intestine.
In the three cases, a corticotherapy was instituted and gave good results.
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Marc Papageorges DMV PHD Ronald D. Sande DVM PHD 《Veterinary radiology & ultrasound》1990,31(6):274-280
Mach bands are optical illusions produced by an extensive lateral inhibition network within the retina. They are seen on every radiograph. Both positive and negative Mach bands can be seen at a boundary, but only one type is usually seen at boundaries created by biological structures because of their shape. Convex structures are associated with a negative Mach line and concave structures are associated with a positive Mach line. Using this principle, the shape of unknown structures can be deduced and structures of known shape can be more accurately identified. Sometimes, Mach lines can be very prominent and be perceived as real structures. Ways to make the distinction between Mach lines and real opacities are described. Understanding the Mach phenomenon improves accuracy of radiographic interpretation. 相似文献