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Image Rendering Techniques in Postmortem Computed Tomography: Evaluation of Biological Health and Profile in Stranded Cetaceans
Published on: September 27, 2020
An autopsy case of misdiagnosis based on postmortem computed tomography findings
Yosuke Usumoto1, Wakako Hikiji, Naomi Sameshima
1Department of Forensic Pathology and Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, 812-8582, Japan.
Insights
Forensic autopsy revealed a ruptured renal artery, not head trauma, caused death. Postmortem CT scans can be misleading, requiring careful interpretation alongside autopsy findings.
Area of Science:
- Forensic Pathology
- Radiology
- Trauma Medicine
Background:
- Postmortem Computed Tomography (CT) is increasingly used to supplement forensic investigations.
- Clinical diagnosis based on initial CT findings can sometimes differ from autopsy results.
Observation:
- A middle-aged male cyclist was found deceased.
- Initial CT suggested traumatic intracerebral hemorrhage and frontal bone fracture.
- Forensic autopsy revealed no acute head trauma but an old frontal lobe defect and a ruptured left renal artery.
Findings:
- The apparent intracerebral hemorrhage was attributed to bleeding into an old frontal lobe defect.
- The actual cause of death was massive hemorrhage from a disrupted left renal artery.
- Discrepancies between pre-autopsy CT and postmortem examination highlight potential diagnostic challenges.
Implications:
- This case underscores the critical importance of integrating autopsy findings with imaging data.
- Over-reliance on postmortem CT without thorough autopsy can lead to misdiagnosis in forensic cases.
- Careful interpretation of postmortem CT is essential to avoid diagnostic errors in cause of death determination.
Abstract:
A middle-aged man was found lying beside his bicycle on an early winter morning. The cause of death was diagnosed by clinicians as traumatic intracerebral hemorrhage and cerebral contusion with frontal bone fracture based on the findings of Computed Tomography (CT) of the head. However, forensic autopsy revealed that there were no evidences of intracerebral hemorrhage and left frontal bone fracture but the defect of golf ball size on the frontal lobe which was considered to be a complication from the old cerebral contusion and old bone fracture. The bleeding and pooling blood from subarachnoid hemorrhage (SAH) to the frontal lobe defect had the appearance of an intracerebral hemorrhage. Disruption of left renal artery was found and the cause of death was diagnosed as massive hemorrhage due to this rupture. Although postmortem CT is a useful tool for obtaining information on the body prior to conducting an autopsy, it should be used with extreme caution.
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