Five abdominal computer tomography characteristics facilitate diagnosis of spontaneous perforation of pyometra in women with acute abdomen: a case control study

Background: Spontaneous perforation of pyometra is a rare clinical emergency with high mortality. As pyometra perforation is difficult to recognize pre-operatively, many cases are mis-diagnosed as gastrointestinal (GI) rupture. This study aimed to develop a strategy to improve diagnostic accuracy of...

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Main Authors: Yingying He, Chaoran Li, Fang Long, Zhigang Sun, Yangzong Cidan, Jing Li, Penglong Cao, Rui Ma, Weiwei Wang, Xiaoguang Xu, Zhen Xiao
Format: Article
Language:English
Published: IMR Press 2021-12-01
Series:Clinical and Experimental Obstetrics & Gynecology
Subjects:
Online Access:https://www.imrpress.com/journal/CEOG/48/6/10.31083/j.ceog4806210
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author Yingying He
Chaoran Li
Fang Long
Zhigang Sun
Yangzong Cidan
Jing Li
Penglong Cao
Rui Ma
Weiwei Wang
Xiaoguang Xu
Zhen Xiao
author_facet Yingying He
Chaoran Li
Fang Long
Zhigang Sun
Yangzong Cidan
Jing Li
Penglong Cao
Rui Ma
Weiwei Wang
Xiaoguang Xu
Zhen Xiao
author_sort Yingying He
collection DOAJ
description Background: Spontaneous perforation of pyometra is a rare clinical emergency with high mortality. As pyometra perforation is difficult to recognize pre-operatively, many cases are mis-diagnosed as gastrointestinal (GI) rupture. This study aimed to develop a strategy to improve diagnostic accuracy of spontaneous uterine perforation in female patients with acute abdomen. Methods: Twenty-two women with spontaneous rupture of the uterus (twenty cases previously reported in the literature plus two cases from the authors’ hospital) were included in the study group, another 22 menopausal patients with GI perforation were selected as the control group. Radiologists carefully reviewed the CT images and reports and summarized some common signs in patients with spontaneous perforation of pyometra. GI patients’ CT images were also scrutinized for these characteristic signs. The occurrence of these features was calculated in both groups. All patients underwent abdominal surgical exploration and most of patients diagnosed with spontaneous perforation of pyometra received hysterectomy and bilateral oophorectomy. Results: Five characteristics were specifically detected in patients with uterine spontaneous perforation: (1) Fluid collected in the cul-de-sac, incidence 95.5%; (2) Fluid in the uterine cavity, incidence 100%; (3) Intra-uterine free air, incidence 90.9%; (4) Free air around the uterus, incidence 77.2%; (5) Defects on the uterine wall, incidence 72.7%. However, these five signs were rarely observed in control patients with GI perforation. A dignostic strategy combined clinical findings with raidiological features were developed to help identify these patients. Conclusions: The above five CT characteristics and the developed dignostic algorithm could be used as a tool to facilitate the preoperative diagnosis of spontaneous perforation of pyometra, although more tests are needed in large samples of cases.
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spelling doaj.art-15303b3b3f2e44b0af46e7053ef832042022-12-22T02:11:14ZengIMR PressClinical and Experimental Obstetrics & Gynecology0390-66632021-12-014861324132910.31083/j.ceog4806210S0390-6663(21)01634-1Five abdominal computer tomography characteristics facilitate diagnosis of spontaneous perforation of pyometra in women with acute abdomen: a case control studyYingying He0Chaoran Li1Fang Long2Zhigang Sun3Yangzong Cidan4Jing Li5Penglong Cao6Rui Ma7Weiwei Wang8Xiaoguang Xu9Zhen Xiao10Key Laboratory of Integrated Medicine, First Affiliated Hospital of Dalian Medical University, 116011 Dalian, Liaoning, ChinaPerformance and Quality Management Department, First Affiliated Hospital of Dalian Medical University, 116011 Dalian, Liaoning, ChinaDepartment of Obstetrics and Gynecology, Institute of High Altitude Medicine, People’s Hospital of Naqu Affiliated to Dalian Medical University, 852000 Tibet Autonomous Region, ChinaDepartment of Pathology, First Affiliated Hospital of Dalian Medical University, 116011 Dalian, Liaoning, ChinaDepartment of Obstetrics and Gynecology, People’s Hospital of Naqu, 850000 Naqu, Tibet Autonomous Region, ChinaDepartment of Obstetrics and Gynecology, First Affiliated Hospital of Dalian Medical University, 116011 Dalian, Liaoning, ChinaDepartment of Clinical Laboratory, First Affiliated Hospital of Dalian Medical University, 116011 Dalian, Liaoning, ChinaDepartment of Education, First Clinical School of Dalian Medical University, 116011 Dalian, Liaoning, ChinaDepartment of Radiology, First Affiliated Hospital of Dalian Medical University, 116011 Dalian, Liaoning, ChinaDepartment of Neurosurgery, Second Affiliated Hospital of Dalian Medical University, 116022 Dalian, Liaoning, ChinaDepartment of Obstetrics and Gynecology, Institute of High Altitude Medicine, People’s Hospital of Naqu Affiliated to Dalian Medical University, 852000 Tibet Autonomous Region, ChinaBackground: Spontaneous perforation of pyometra is a rare clinical emergency with high mortality. As pyometra perforation is difficult to recognize pre-operatively, many cases are mis-diagnosed as gastrointestinal (GI) rupture. This study aimed to develop a strategy to improve diagnostic accuracy of spontaneous uterine perforation in female patients with acute abdomen. Methods: Twenty-two women with spontaneous rupture of the uterus (twenty cases previously reported in the literature plus two cases from the authors’ hospital) were included in the study group, another 22 menopausal patients with GI perforation were selected as the control group. Radiologists carefully reviewed the CT images and reports and summarized some common signs in patients with spontaneous perforation of pyometra. GI patients’ CT images were also scrutinized for these characteristic signs. The occurrence of these features was calculated in both groups. All patients underwent abdominal surgical exploration and most of patients diagnosed with spontaneous perforation of pyometra received hysterectomy and bilateral oophorectomy. Results: Five characteristics were specifically detected in patients with uterine spontaneous perforation: (1) Fluid collected in the cul-de-sac, incidence 95.5%; (2) Fluid in the uterine cavity, incidence 100%; (3) Intra-uterine free air, incidence 90.9%; (4) Free air around the uterus, incidence 77.2%; (5) Defects on the uterine wall, incidence 72.7%. However, these five signs were rarely observed in control patients with GI perforation. A dignostic strategy combined clinical findings with raidiological features were developed to help identify these patients. Conclusions: The above five CT characteristics and the developed dignostic algorithm could be used as a tool to facilitate the preoperative diagnosis of spontaneous perforation of pyometra, although more tests are needed in large samples of cases.https://www.imrpress.com/journal/CEOG/48/6/10.31083/j.ceog4806210acute abdomencomputer tomography signpelvic infectionpyometrauterine perforation
spellingShingle Yingying He
Chaoran Li
Fang Long
Zhigang Sun
Yangzong Cidan
Jing Li
Penglong Cao
Rui Ma
Weiwei Wang
Xiaoguang Xu
Zhen Xiao
Five abdominal computer tomography characteristics facilitate diagnosis of spontaneous perforation of pyometra in women with acute abdomen: a case control study
Clinical and Experimental Obstetrics & Gynecology
acute abdomen
computer tomography sign
pelvic infection
pyometra
uterine perforation
title Five abdominal computer tomography characteristics facilitate diagnosis of spontaneous perforation of pyometra in women with acute abdomen: a case control study
title_full Five abdominal computer tomography characteristics facilitate diagnosis of spontaneous perforation of pyometra in women with acute abdomen: a case control study
title_fullStr Five abdominal computer tomography characteristics facilitate diagnosis of spontaneous perforation of pyometra in women with acute abdomen: a case control study
title_full_unstemmed Five abdominal computer tomography characteristics facilitate diagnosis of spontaneous perforation of pyometra in women with acute abdomen: a case control study
title_short Five abdominal computer tomography characteristics facilitate diagnosis of spontaneous perforation of pyometra in women with acute abdomen: a case control study
title_sort five abdominal computer tomography characteristics facilitate diagnosis of spontaneous perforation of pyometra in women with acute abdomen a case control study
topic acute abdomen
computer tomography sign
pelvic infection
pyometra
uterine perforation
url https://www.imrpress.com/journal/CEOG/48/6/10.31083/j.ceog4806210
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