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External Examination

Definition

The stage of the autopsy in which the pathologist examines the body surface, documents injuries, and removes clothing before any incisions are made. Entomological collection must be completed before this stage proceeds past initial observation.

Autopsy stage
Before internal incisions are made
Includes
Body surface exam, injury documentation, clothing removal
Entomology requirement
Insect collection completed before this stage proceeds
Field
Forensic entomology / autopsy collection protocol

Common questions

Why must entomological evidence be collected before the external examination proceeds?+

Handling and cleaning the body during examination can dislodge, damage, or lose insect specimens and their exact body-region locations, both of which carry information about time and conditions of exposure, so collection happens while that placement is undisturbed.

What information is lost if insects are collected only after the body has been moved or cleaned?+

The precise anatomical location of colonisation, larval stage distribution, and microhabitat clues such as insects under clothing versus exposed skin can be disturbed, weakening the entomologist's ability to estimate the postmortem interval accurately.

Related terms

Body Bag
The sealed bag used to transport the body from scene to mortuary. Treated as a collection zone because migrating larvae, puparia, and...
Instar
A developmental stage between moults (ecdysis). Blow flies have three larval instars (L1, L2, L3), each ending when the larva sheds its...
Internal Cavity Insects
Larvae or puparia found inside the skull, thorax, or abdomen during internal autopsy examination. They often represent colonisation through wounds or extended...
Maggot Mass Documentation
The photographic and physical record of each maggot mass location, volume, instar, and temperature taken at the start of autopsy before any...
Puparium
The hardened, barrel-shaped case formed from the last larval skin when a blow fly larva pupates. Puparia are dark brown and can...

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