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Described here is a case of suicide with the use of a chainsaw. A female suffering from schizophrenia committed suicide by an ingenious use of a chainsaw that resulted in the transection of her cervical spine and spinal cord. The findings of the resulting investigation are described and the mechanism of suicides with the use of a chainsaw is reviewed. A dry bone study was realized to determine the bone sections, the correlation between anatomic lesions and characteristics of chainsaw. The damage of organs and soft tissues is compared according to the kinds of chainsaw used.

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An 11‐month‐old boy was found dead. Autopsy findings (cyanosis and polyvisceral congestion) and blood tramadol (TR) concentration of 6240 μg/L were consistent with an acute TR intoxication. In this poisoning situation, owing to the mother's statements (TR addiction leading to daily TR‐orange juice mixture preparation accidentally used for the baby bottle preparation by the mother's partner), and the question of possible previous TR administrations to the infant, hair and/or nails (infant, mother, partner, 6‐year‐old sister) analysis was performed. Hair (2‐cm‐long hair segments from proximal [S1] to distal [S3]) and nails concentrations (pg/mg; nd: not detected) were as follows: Infant (hair: TR 1420 [S1], 1622 [S2], 2736 [S3]; O‐DMT 16–38; N‐DMT 34–100 [TR in significant quantities in the hair decontamination bath]—toenails: TR 584; O‐DMT 8; N‐DMT 15), mother (hair: TR 2340 [S1], 2150 [S2], 2500 [S3]; O‐DMT 704–1170; N‐DMT 827–1360), mother's partner (fingernails: TR 72; O‐DMT nd; N‐DMT nd) and sister (hair: TR 261 [S1], 524 [S2]; O‐DMT 15 [S1], 16 [S2]; N‐DMT 20 [S1], 38 [S2]). Metabolite ratio (infant and sister hair) was comparable to those observed in hair of pharmaceutical industry employees manufacturing tramadol. TR in washing baths, low observed nail concentrations (infant and partner) confirm (i) TR‐related mother's addiction and (ii) external contamination issues (TR in sweat of the child at the time of death and in living environment) to explain the infant's keratinized samples results. This case report illustrates the interest of analyzing keratinized matrices of the whole family in such a situation.