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Principles of the forensic autopsy
The forensic autopsy is a systematic, documented examination of a body to establish identity, cause of death, mechanism, circumstances and time, and it differs from a clinical autopsy in that the external examination, wound documentation and chain of custody matter as much as the internal organs.
Why it matters in the exam
The exam asks about the order of the examination, how findings are described and how to tell a real finding from an artifact. The autopsy begins with information: circumstances, scene, medical records and photographs. Then comes a full external examination with and without clothing, photography with a scale, imaging (whole-body CT or radiographs) as needed — mandatory in suspected shooting, in children and in burned bodies — and finally an internal examination of all body cavities: skull, neck in layers, chest and abdomen.
Wound position is described relative to fixed anatomical landmarks — distance from the heel or the vertex and distance from the midline — not relative to objects or clothing, with size, shape, direction, colour and margins. Each wound is described separately even when there are dozens. The neck is dissected in layers after draining blood from the head and chest, so as not to create artificial haemorrhage. Toxicology and histology samples are taken in every forensic autopsy, even when the cause seems obvious.
Artifacts appear in many questions: rib and sternal fractures from resuscitation, haemorrhage behind the oesophagus from venous congestion (Prinsloo-Gordon), postmortem animal damage with margins showing no inflammatory reaction, heat fractures in a burned body and blood-stained nasal fluid in decomposition. A finding showing vital reaction — haemorrhage into tissue, inflammation, fibrin — shows that the injury occurred in life; its absence does not exclude this if death was immediate. The chain of custody is documented from the moment each sample is collected until it reaches the laboratory.
Key points
- The forensic autopsy establishes identity, cause, mechanism, circumstances and time.
- External examination and wound documentation matter as much as the internal examination.
- Wound position: distance from heel or vertex and from the midline.
- Imaging before autopsy in shooting, children and burned bodies.
- Know the artifacts: resuscitation, Prinsloo-Gordon, animals, heat.
Summary table
| Step | What is done | Why | Common error |
|---|---|---|---|
| Prior information | Circumstances, scene, medical file | Directs the examination | Dissecting before reading the background |
| External examination | Clothing, photography with scale, description of every wound | Evidence that cannot be repeated | Describing position relative to clothing |
| Imaging | CT or radiographs | Projectiles, fractures, children, burned bodies | Omitting it in suspected shooting |
| Internal examination | All cavities; neck in layers after drainage | Cause and mechanism | Creating artificial neck haemorrhage |
| Samples | Toxicology, histology, DNA | Even when the cause seems clear | Not documenting the chain of custody |
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Sources
- Royal College of Pathologists: Guidelines on autopsy practice — Forensic autopsy, 2019 — Code of practice and performance standards
- Knight's Forensic Pathology, 4th edition (2016) — The forensic autopsy
- Council of Europe Recommendation R(99)3 on the harmonisation of medico-legal autopsy rules, 1999 — Autopsy procedures
Sources are given for further reading; the text is written afresh and not copied from them.
Reviewed by the Examqo AI Professor · 2026-11-06. The text may contain errors; when in doubt, check the source.