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B Kaiser M Koene J Swagemakers H Bader H O Hoppen 《Tier?rztliche Praxis. Ausgabe G, Grosstiere/Nutztiere》1999,27(3):180-186
During the 1997 breeding season persistent follicles were diagnosed in 17 mares. In 16 of these mares a total of 17 follicles were transabdominally punctured and the steroids oestradiol, progesterone and testosterone were measured in the follicular fluid and in blood serum. In ten mares serving as a control group preovulatory follicles were punctured. The follicular fluid of the persistent follicles revealed a very high variability of the steroid concentrations. Depending on the steroid ratio within the follicles, eight follicles were rated as being intact, three follicles were undergoing atresia and five follicles were luteinized. Because of the high oestradiol levels of the follicular fluid within the control group, all of these follicles were considered to be intact. In both groups, no correlation of the steroid concentration between serum and follicular fluid was detectable. This fact argues against a passive diffusion of the steroids through the follicular wall. By puncturing the persistent follicles it was possible to bring the affected mares back into a physiological oestrus cycle within a normal dioestrus period. 相似文献
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Imke Janssen Jan-Hein Swagemakers Marc Koene Christoph Lischer 《Journal of Equine Veterinary Science》2013
This case report demonstrates the development and management of an osseous cyst-like lesion in the spongiosa of the navicular bone in a high-level show jumper with chronic intermittent forelimb lameness. The first evidence of navicular bone pathology was increased signal intensity on fat-suppressed images in the medulla of the right navicular bone, which progressed to a cystic lucency identified on radiographs at 24 months. The horse's progress was documented over a period of 2 years and 2 months, including lameness investigation, treatment, radiographs, and six follow-up standing low-field magnetic resonance imagings. At the last clinical recheck, the horse showed no signs of lameness and continued to compete in show jumping at an international level event. 相似文献
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Standing low-field magnetic resonance imaging as a diagnostic modality for solar keratoma in a horse
M. Mageed A. Elfadl N. Blum J. Wegert F. Kremer J. Swagemakers 《Equine Veterinary Education》2020,32(6):O56-O61
A 22-year-old Friesian gelding was presented with a history of chronic, nonresolving lameness localised to the right front foot. Radiographs showed a smoothly marginated circular lucent area with a rim of increased opacity adjacent to the solar canal of the distal phalanx. The magnetic resonance imaging (MRI) revealed a reversed V-shaped smoothly demarcated space-occupying mass causing invagination of the solar laminae towards the solar canal arch and deformity of the adjacent surface of the distal phalanx. The mass was removed surgically and submitted for histopathology, which revealed a keratoma and periosteal fibrosis. Six weeks post-surgery the horse returned to the previous work level and 8 months follow-up showed no recurrence of keratoma. This report highlights the usefulness of MRI as a diagnostic modality for solar keratoma. 相似文献
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