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Abstract：
OBJECTIVE: To observe the imaging features of color Doppler ultrasound (CDU) and computed tomography (CT) or computed tomography dacryocystography (CT-DCG) in different types of lacrimal sac space-occupying lesions (SOLs).
METHODS: This retrospective case series study included 21 patients with lacrimal sac SOLs who underwent lacrimal sac surgery between January 2018 and March 2022. The imaging features of CDU and CT or CT-DCG in these patients were extracted from the examination cloud system. The images were observed and analyzed.
RESULTS: The detection rate of lacrimal SOLs between CDU (21/21, 100%) and CT or CT-DCG (20/21, 95.2%) had no statistically significant difference (P=1.0). CDU could detect the blood flow signals in all SOLs except mucocele and mucopeptide concretion. Among them, polyps had characteristic imaging changes on CDU and CT-DCG. The mucoceles and mucopeptide concretions had characteristic imaging changes on CDU, which could provide more information for differential diagnosis.
CONCLUSIONS: The morphology and internal blood flow signals of lacrimal sac SOLs can be observed using CDU. CT or CT-DCG has advantages in observing structural damage around the lacrimal sac mass. Therefore, CDU may be used as a routine examination to exclude lacrimal sac SOLs before dacryocystorhinostomy in the absence of preoperative CT or CT-DCG.
METHODS: This retrospective case series study included 21 patients with lacrimal sac SOLs who underwent lacrimal sac surgery between January 2018 and March 2022. The imaging features of CDU and CT or CT-DCG in these patients were extracted from the examination cloud system. The images were observed and analyzed.
RESULTS: The detection rate of lacrimal SOLs between CDU (21/21, 100%) and CT or CT-DCG (20/21, 95.2%) had no statistically significant difference (P=1.0). CDU could detect the blood flow signals in all SOLs except mucocele and mucopeptide concretion. Among them, polyps had characteristic imaging changes on CDU and CT-DCG. The mucoceles and mucopeptide concretions had characteristic imaging changes on CDU, which could provide more information for differential diagnosis.
CONCLUSIONS: The morphology and internal blood flow signals of lacrimal sac SOLs can be observed using CDU. CT or CT-DCG has advantages in observing structural damage around the lacrimal sac mass. Therefore, CDU may be used as a routine examination to exclude lacrimal sac SOLs before dacryocystorhinostomy in the absence of preoperative CT or CT-DCG.
摘要：
目的：观察不同类型泪囊占位性病变（SOLs）的彩色多普勒超声（CDU）、CT或CT泪囊造影（CT-DCG）的影像学特征。
方法：这项回顾性病例系列研究包括2018年1月至2022年3月期间接受泪囊手术的21例泪囊SOLs患者。从检查云系统中提取这些患者的CDU和CT或CT-DCG的影像学特征。对图像进行观察和分析。
结果：CDU(21/21,100%)与CT或CT-DCG(20/21,95.2%)之间泪道SOLs检出率差异无统计学意义(P=1.0)。CDU可以检测除粘液囊肿和粘肽结石外的所有SOL中的血流信号。其中,息肉在CDU和CT-DCG上有特征性的影像学改变。粘液囊肿和粘肽结石在CDU上有特征性的影像学改变，这可以为鉴别诊断提供更多信息。
结论：使用CDU可以观察泪囊SOLs的形态和内部血流信号。CT或CT-DCG在观察泪囊肿块周围结构损伤方面具有优势。因此,在没有术前CT或CT-DCG的情况下，CDU可用作泪囊鼻腔吻合术前排除泪囊SOLs的常规检查。
方法：这项回顾性病例系列研究包括2018年1月至2022年3月期间接受泪囊手术的21例泪囊SOLs患者。从检查云系统中提取这些患者的CDU和CT或CT-DCG的影像学特征。对图像进行观察和分析。
结果：CDU(21/21,100%)与CT或CT-DCG(20/21,95.2%)之间泪道SOLs检出率差异无统计学意义(P=1.0)。CDU可以检测除粘液囊肿和粘肽结石外的所有SOL中的血流信号。其中,息肉在CDU和CT-DCG上有特征性的影像学改变。粘液囊肿和粘肽结石在CDU上有特征性的影像学改变，这可以为鉴别诊断提供更多信息。
结论：使用CDU可以观察泪囊SOLs的形态和内部血流信号。CT或CT-DCG在观察泪囊肿块周围结构损伤方面具有优势。因此,在没有术前CT或CT-DCG的情况下，CDU可用作泪囊鼻腔吻合术前排除泪囊SOLs的常规检查。
