Forensic reconstruction of cause of death in a dismembered and partially burnt body: A case report.

BACKGROUND: Dismemberment and postmortem burning are uncommon forensic challenges that may obscure identification, injury interpretation and determination of cause of death. Systematic anatomical reconstruction and careful examination of dismemberment wounds, vital reaction of tissues and thermal alteration are essential for forensic reconstruction. Toxicological findings must be interpreted according to the substances and analytical categories actually examined.

CASE PRESENTATION: Dismembered remains of an adult male were recovered from multiple locations and anatomically reassembled for medico-legal autopsy. Circumferential chop wounds at the shoulder, thigh and pelvic separation sites had serrated margins and extensive hemorrhagic infiltration with extensive division of vascular soft tissues and bones, and the pale internal organs supported the interpretation that the injuries were inflicted while circulation persisted and caused substantial blood loss. Some body parts showed thermal alteration without demonstrable gross vital reaction, no red line of demarcation along with no soot detected in the trachea and in overall context, the findings supported postmortem burning. Additionally an antemortem intravenous puncture wound was present in the right cubital fossa. The chemical examiner reported "No Poison" detected in the submitted viscera and blood after testing for several pesticide groups, volatile substances including ethyl and methyl alcohol, cyanide, metallic and non-metallic poisons, and acidic, basic and neutral extracts for drugs/plant poisons; it did not identify individual recreational drugs or provide a named comprehensive recreational-drug panel. The official postmortem opinion was given as hemorrhage and shock consequent to the chop injuries. Subsequent investigative information from police alleged prior exposure to an unknown drug, but this was not analytically established.

CONCLUSION: The final cause of death remains hemorrhage and shock consequent to the extensive chop injuries, morphologically compatible with a heavy sharp serrated instrument, as stated in the formal autopsy report. Subsequent police investigation revealed dismemberment using a motorized saw and partial burning to conceal crime following an altercation. This case highlights the importance of anatomical reconstruction and meticulous forensic autopsy in markedly altered remains where extent of the separation wounds, marked hemorrhagic infiltration of the cut tissues and the overall autopsy findings formulated the cause of death. The chemical examiner detected no poison in the submitted exhibits within the scope of the tests reported; this does not establish that every possible recreational drug was excluded. The alleged unknown drug exposure was not analytically demonstrated and was not considered the cause of death.