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Stereotactic radiation treatment of a pituitary mass in a rabbit (Oryctolagus cuniculus) 收藏

立体定向辐射处理兔(oryctolagus cuniculus)的垂体质量
摘要
A 9-year-old female spayed Holland Lop rabbit (Oryctolagus cuniculus) presented with abnormal eyelid positioning on the right eye of 2 week duration. A full neurological examination revealed ptosis, enopthalmia, decreased palpebral reflex of the right eye. A pre and post contrast CT-study confirmed a large heterogeneously contrast-enhancing and partially peripherally mineralized parasellar pituitary mass. Stereotactic radiation was performed delivering 3 fractions of 8 Gy every other day (total dose 24 Gy) using volumetric-modulated arc therapy for the pituitary mass. A progressive decrease in size of the pituitary mass was observed on two follow-up CT-studies at six- and eighteen-months post-radiotherapy. The adrenal panels performed during follow-up visits suggested increased adrenal activity post-radiotherapy. No adverse effects of radiation therapy were noted at home or subsequent veterinary visits. CT imaging was a reliable modality for diagnosing and monitoringthe pituitary mass. Treatment with stereotactic radiotherapy resulted in a marked reduction in the pituitary mass volume with a long survival time and without adverse effects. Radiation therapy should be considered a treatment option in rabbits with pituitary tumors and the protocol used in this case could be used as a reference for future cases.
摘要译文
一名9岁的雌性Spay荷兰Lop Rabbit(Oryctolagus cuniculus)在2周持续时间的右眼上表现出异常的眼睑位置。全面的神经系统检查表明ptosis,递减,右眼的骨反射降低。对比前后,CT研究证实了较大的异质对比度增强和部分外周矿化的parasellar垂体质量。立体定向辐射使用垂体质量的体积调节弧治疗每隔一天提供3个GY的3个分数(总剂量24 Gy)。在六分之十和十八个月后,垂体肿块的大小逐渐减小,在六个月后接受放射治疗。在随访期间进行的肾上腺面板表明,肾上腺疗法后肾上腺活性增加。在家或随后的兽医就诊时,没有发现放射治疗的不良影响。 CT成像是诊断和监测垂体质量的可靠方式。立体定向放射疗法的治疗导致垂体质量体积显着减少,生存时间长,没有不良反应。放射疗法应视为垂体肿瘤兔子的治疗选择,在这种情况下使用的方案可以用作将来病例的参考。
Paula RodriguezDVM[a];David Sanchez-Migallon GuzmanLV; MS[b];Jessica RobertsonDVM[c];Alexandra D. La PorteDVM[a];Michelle G. HawkinsVMD[b];Joanne R. Paul-MurphyDVM[b];Katherine S. HansenDVM[b]. Stereotactic radiation treatment of a pituitary mass in a rabbit (Oryctolagus cuniculus)[J]. Journal of Exotic Pet Medicine, 2022,42: 1-5