Analysis of pus within the tubo-ovarian abscess presenting pseudo-soft tissue sign on T2-weighted imaging (report of 24 cases)

LI Xiaoyan; LIU Changlin; ZENG Fanyong; QIN Yongyuan; HUANG Bingle; WANG Yongjie; CHU Caiting; ZHAO Shuhui; LI Wenhua

doi:10.19732/j.cnki.2096-6210.2020.06.013

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Analysis of pus within the tubo-ovarian abscess presenting pseudo-soft tissue sign on T2-weighted imaging (report of 24 cases)

更新时间：2025-12-15

- Analysis of pus within the tubo-ovarian abscess presenting pseudo-soft tissue sign on T2-weighted imaging (report of 24 cases)
- Vol. 29, Issue 6, Pages: 595-598(2020)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.19732/j.cnki.2096-6210.2020.06.013
  CLC：
- Published Online：28 December 2020，
  
  Published：28 December 2020
- 稿件说明：
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李晓燕,刘长林,曾凡勇,等. 输卵管卵巢脓肿T2WI脓液假软组织征临床分析（附24例报告）[J]. 肿瘤影像学, 2020, 29(6): 595-598 https://doi.

org/10.19732/j.cnki.2096-6210.2020.06.013
李晓燕,刘长林,曾凡勇,等. 输卵管卵巢脓肿T2WI脓液假软组织征临床分析（附24例报告）[J]. 肿瘤影像学, 2020, 29(6): 595-598 https://doi. DOI： 10.19732/j.cnki.2096-6210.2020.06.013.

org/10.19732/j.cnki.2096-6210.2020.06.013 DOI：

摘要

目的：

分析输卵管卵巢脓肿时，脓液于T2加权成像（T2-weighted imaging，T2WI）上表现假软组织征的形成机制。

方法：

收集2010年1月2018年10月经手术后病理学检查证实（19例）及抗炎治疗诊断（5例）的输卵管卵巢脓肿患者24例，观察记录T1加权成像（T1-weighted imaging，T1WI）、T2WI、扩散加权成像（diffusion-weighted imaging，DWI）信号和增强特征。

结果：

24例输卵管卵巢脓肿患者中，单侧18例，双侧6例，共30个脓肿病灶。其中，8个病灶脓液区在T1WI呈低信号，10个病灶脓液区在T1WI呈稍高信号，12个病灶在T1WI呈中等高信号，全部病灶脓液区在T2WI呈软组织信号（与脓肿壁或子宫肌层信号相似），脓液区在DWI上均呈高信号。增强后1例脓液区T1WI呈现增强（假强化）现象。

结论：

输卵管卵巢脓肿时，在磁共振成像（magnetic resonance imaging，MRI）图像上脓液可表现为假软组织信号或假增强现象，易误诊为肿瘤性病变，辅以DWI有助于诊断与鉴别诊断。

Abstract

Objective:

To explore the formation mechanism of pseudo-soft tissue sign on T2-weighted imaging (T2WI) of the pus of tubo-ovarian abscess.

Methods:

The magnetic resonance imaging (MRI) data of 24 patients with acute and subacute suppurative tubo-ovarian inflammation confirmed by anti-inflammatory treatment or surgical operation were collected from Jan. 2010 to Oct. 2018. The signal characteristics of T1-weighted imaging (T1WI)

T2WI

diffusion-weighted imaging (DWI) and en

hanced T1WI were observed and recorded.

Results:

Of 24 patients

18 were unilateral and 6 were bilateral

with 30 lesions in total. Among them

8 lesions showed low signal on T1WI

10 lesions showed slightly high signal similar to mucus on T1WI (false mucus sign)

12 lesions showed high signal on T1WI. All pus area within the lesions were medial signal similar to muscle on T2WI (pseudo-soft tissue sign) and high signals on DWI.

Conclusion:

The pus of tubo-ovarian abscess can form mucoid signals and soft tissue signals

their properties can be accurately determined by DWI

which is conducive to the diagnosis and differential diagnosis of suppurative tubo- ovarian inflammation from ovarian cystic and solid tumors.

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