Be careful with lentils! About a forensic observation

Area of Science:

• Forensic pathology
• Histology
• Molecular biology

Background:

• Exogenous particles in the broncho-pulmonary tree are common findings in forensic autopsies, often linked to aspiration.
• Distinguishing between aspirated material and parasitic infections is crucial for accurate diagnosis.

Observation:

• An 8-year-old boy presented with multi-visceral injuries after a fall.
• Histological examination revealed round to oval, PAS-positive particles in the lungs and on organ surfaces.
• Particles resembled dried vegetables, prompting investigation into aspiration versus parasitic etiology.

Findings:

• Microscopic and PCR analysis identified the particles as Lens culinaris (lentils).
• Hematogenous dissemination was deemed unlikely.
• Contamination during autopsy or sample processing was identified as the primary hypothesis for organ surface findings.

Implications:

• Accurate identification of exogenous particles is vital to prevent misdiagnosis of parasitic infections.
• This case highlights the importance of meticulous sample handling in forensic investigations.
• Understanding particle dispersion pathways aids in reconstructing events and ensuring correct forensic interpretation.