Forensic Examination: Drowning
Forensic Pathology: Investigation of Aquatic Deaths
1. External Autopsy Findings
- Foam Cone: A persistent, fine, white or blood-tinged froth at the mouth and nostrils (pathognomonic of drowning).
- Washerwoman’s Hands/Feet: Maceration of the skin of palms and soles due to prolonged immersion (nott diagnostic of drowning itself, but indicative of time in water).
- Cadaveric Spasm: Occasionally, the hands may be tightly clutching weeds, mud, or debris from the bottom, indicating a struggle before death.
2. Internal Autopsy Findings
| Organ | Finding |
|---|---|
| Lungs | “Emphysema Aquosum”—heavy, voluminous, boggy, and overlapping the heart. |
| Middle Ear | Hemorrhage in the mastoid air cells (Paltauf’s hemorrhage). |
| Stomach | Presence of swallowed water/silt/diatoms. |
3. Forensic High-Yield Pearls
- Diatom Test: The finding of diatoms (microscopic algae) in bone marrow or organs is a key indicator of ante-mortem aspiration, though it must be interpreted carefully due to potential contamination.
- Exclusionary Diagnosis: Drowning is a diagnosis of exclusion. Always perform a full toxicology screen and check for underlying pathologies (e.g., arrhythmia, seizures, or intoxication) that may have precipitated the incident.
- Post-Mortem Submersion Interval: Use findings like adipocere formation, skin slippage, and bloating to estimate the time elapsed since the body entered the water.