[Quantitative Growth of the human fetal larynx: allometric study between the 9th and 38th weeks post-conception].

The ponderal growth of the larynx was studied in human fetal period between the 9th and 38th weeks post-conception (w.p.c.). The larynx weight (in grams - g) was related with body weight (in grams -g) using the allometric equation Y= ax(b). Our results indicated that relative growth of the larynx is allometric negative (b= 0.55, p < 0.001). These data are important in estimating the fetal gestational age after non-invasive investigation (MR, CT and ultrasound).