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Postmortem computed tomography differentiation between intraperitoneal decomposition gas and pneumoperitoneum.

Maged Nabil Hussein1, Axel Heinemann2, Dina Ali Shokry3

  • 1Forensic Medicine Authority, Ministry of Justice, 14 Berium Eltonsy Street, Elsayda Zainb, Cairo, Egypt. Magednabil_1@hotmail.com.

International Journal of Legal Medicine
|October 28, 2021
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Summary
This summary is machine-generated.

Postmortem CT (PMCT) can differentiate decomposition gas from intestinal perforation pneumoperitoneum. Specific gas patterns and volumes observed in intestinal perforation cases aid accurate diagnosis.

Keywords:
AutopsyCadaveric gasForensic medicinePneumoperitoneumPostmortem computed tomography (PMCT)Postmortem imaging

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Area of Science:

  • Forensic Radiology
  • Medical Imaging
  • Pathology

Background:

  • Distinguishing postmortem decomposition gas from vital pneumoperitoneum is crucial in forensic investigations.
  • Postmortem computed tomography (PMCT) is increasingly used in forensic pathology.

Purpose of the Study:

  • To evaluate the capability of PMCT in differentiating intraperitoneal decomposition gas from pneumoperitoneum caused by intestinal perforation.
  • To identify factors that aid in this distinction.

Main Methods:

  • Retrospective analysis of 14 decedents with intestinal perforation and 14 with other natural causes of death.
  • PMCT data were analyzed for gas volume, distribution, postmortem interval, radiology alteration index (RAI), and associated pathology.

Main Results:

  • Intestinal perforation cases exhibited distinct gas distribution patterns and significantly larger gas volumes.
  • Postmortem interval and pneumoperitoneum-associated pathology were identified as key differentiating factors.

Conclusions:

  • PMCT findings, including specific gas patterns and volumes, can help distinguish decomposition gas from intestinal perforation.
  • This distinction can improve the accuracy of detecting intestinal perforation in postmortem examinations.