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首页> 外文期刊>The Bovine Practitioner >Monitoring Return to Cyclicity Following Removal of a Granulosa Cell Tumor Associated with Precocious Lactation in an 11-month-old Holstein Heifer
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Monitoring Return to Cyclicity Following Removal of a Granulosa Cell Tumor Associated with Precocious Lactation in an 11-month-old Holstein Heifer

机译：监测在11个月大的荷斯坦小母牛的早熟泌乳相关的颗粒细胞肿瘤切除后的恢复周期

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An 11-month-old Holstein heifer was presented to the Western College of Veterinary Medicine for evaluation of precocious lactation associated with a palpably enlarged right ovary Ultrasound examination of the ovaries revealed a 6 inch (15 cm) diameterright ovary with a multilobulated appearance, and a small left ovary measuring 0.6 inches (1.6 cm) long by 0.3 inches (0.8 cm) wide, The mammary secretion was consistent with milk: fat - 3..07%, protein - 4.78%, and lactose - 1.07% with a somatic cell count of 4.8 x 10~6/ mL. Prior to removal of the right ovary by right flank laparotomy, serum hormone levels were measured: testosterone (0.01 ng/mL), estradiol-17p (9.1 pg/mL), progesterone (0.2 ng/ mL), prolactin (5.8 ng/mL), luteinizing hormone (0,14 ng/mL) and follicle stimulating hormone (0.32 ng/mL). Gross examination revealed that the right ovary weighed 7.34 oz (208 g) and was composed of numerous cysts (0.2 -- 1.6 inches [0,5 -- 4 cm] in diameter) containing fluid or blood, Microscopically, fociof cells of a follicular or luteal nature were noted. The definitive diagnosis was a right ovarian granulosa cell tumor, and milk secretion declined rapidly following tumor removal, The left ovary was monitored ultrasonographically at weekly intervals to determine onset of cyclicity, Follicular activity resumed between three and four weeks post-surgery, followed by detection of a corpus luteum at day 32, The heifer became pregnant five months post-surgery, and has since delivered a live calf. This caserepresents only the second reported case of precocious lactation associated with a granulosa cell tumor, and suggests that cyclicity is likely to return to the contralateral ovary less than a month after tumor removal.
机译：将一个11个月大的荷斯坦小母牛介绍给西部兽医学院，以评估与明显增大的右卵巢有关的性早熟泌乳。卵巢超声检查发现直径6英寸（15厘米）的右侧卵巢呈多叶状，并且左卵巢小，长0.6英寸（1.6厘米），宽0.3英寸（0.8厘米），乳汁分泌与牛奶一致：脂肪-3..07％，蛋白质-4.78％，乳糖-1.07％（体细胞）细胞计数为4.8 x 10〜6 / mL。在通过右腹剖腹术切除右卵巢之前，测量血清激素水平：睾丸激素（0.01 ng / mL），雌二醇-17p（9.1 pg / mL），孕酮（0.2 ng / mL），催乳激素（5.8 ng / mL） ），促黄体生成激素（0.14 ng / mL）和促卵泡激素（0.32 ng / mL）。大体检查显示，右卵巢重7.34盎司（208克），由许多含有液体或血液的囊肿（直径0.2-1.6英寸[0.5-4厘米]）组成，镜下可见滤泡细胞或黄体性质。明确诊断为右卵巢颗粒细胞瘤，切除肿瘤后乳汁分泌迅速减少。每周检查一次超声检查左卵巢以确定周期的发作，手术后三至四周恢复卵泡活动，随后进行检测小母牛在第32天出生后，在手术后五个月就怀孕了，从那时起，她已经交付了一只活牛。该病例仅代表第二例与颗粒细胞瘤有关的性早熟的报道病例，并提示在去除肿瘤后不到一个月的时间里，周期性可能返回对侧卵巢。

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