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在分化型甲状腺癌女性患者131I治疗后5~7 d的全身扫描图像中,常见盆腔子宫水平131I明显浓聚,由于解剖位置关系和131I经由膀胱排出的原因,易误认为是膀胱显影,而本研究发现盆腔子宫水平131I明显浓聚以子宫原因所致的浓聚较多见,并往往伴随子宫病变。本文通过回顾性分析病例资料,结合SPECT/CT断层定位、超声、病史和其他临床资料,了解盆腔浓聚的确切部位和原因,并就盆腔浓聚131I的常见情况及可能的机制进行讨论。
甲状腺癌131I治疗后全身扫描盆腔浓聚131I的临床分析
Analysis of pelvic 131I uptake after 131I whole body scan in patients with thyroid cancer
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摘要:
目的 了解分化型甲状腺癌患者131I治疗后全身显像(Rx-WBS)盆腔131I明显浓聚情况及可能机制。 方法 ① 回顾性收集168例分化型甲状腺癌女性患者的资料(均有Rx-WBS图像)。②分析Rx-WBS图像特点,根据一定的纳入标准,最终纳入分析46例患者,并进行随访。 结果 盆腔131I明显浓聚的46例(46处浓聚)患者中,6例同时存在2个可能的浓聚原因,2例目前浓聚原因不明。在50个导致盆腔131I浓聚的原因中,与子宫相关41个,与子宫外相关9个,分别为直肠3个、膀胱5个、卵巢巧克力囊肿1个。在41个与子宫相关的浓聚因素中,结合SPECT/CT定位、B超、CT及随访结果发现,子宫肌瘤18个、节育器9个、子宫内膜增厚2个、宫腔积液3个、月经期7个、子宫内膜腺肌症1个、孕囊1个。 结论 ① 当女性甲状腺癌患者的Rx-WBS图像在盆腔子宫水平出现131I明显浓聚时,多与子宫相关,膀胱因素相对少见;当浓聚定位到子宫时,排除生理性摄取,多提示相关的妇科疾病,以子宫肌瘤多见。②膀胱、直肠所致的盆腔子宫水平131I明显浓聚有其自身特点,相对易区分。③SPECT/CT对定位子宫浓聚131I具有重要意义。 Abstract:Objective To analyze and explore the possible mechanism for pelvic 131I uptake after 131I post treatment whole body scan(RX-WBS)in patients with differentiated thyroid cancer. Methods ① Data were retrospectively reviewed from 168 female patients with differentiated thyroid cancer(everyone has a RX-WBS). ②46 patients were accepted by analyzing the characteristics of Rx-WBS and combing with some inclusion criteria, and then followed up. Results Among the 46 patients(46 positions accumulated 131I)with significant pelvic 131I uptake, 6 patients had two reasons leading to pelvic 131I uptake, and 2 patients had no specific reason. Among the 50 reasons for pelvic 131I uptake, 41 reasons related with uterus, 3 reasons related to rectum, 5 related to bladder and 1 related to ovarian chocolate cyst. Among the 41 reasons related to uterus, by combining the examinations of SPECT/CT, ultrasound, CT and the follow-up results, 18 were uterine leiomyomas, 9 were intrauterine devices, 2 were endometrial thickening, 3 were uterine cavity effusion, 7 were menstrual periods, 1 were uterine adenomyosis, 1 were gestational sac. Conclusions ① In the Rx-WBS of female, the significant pelvic 131I uptake is generally caused by uterus, but not bladder. And it usually means gynecological disease, especially uterine leiomyomas when excluding physiological factors. ②It is generally easy to differentiate bladder from rectum because they have different characteristic features of the pelvic 131I uptake. ③SPECT/CT plays a very important role in locating 131I uptake in uterus. -
Key words:
- Thyroid neoplasms /
- Iodine radioisotopes /
- Whole body imaging /
- Pelvic uptake
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