Volumetric Growth of the Liver in the Human Fetus: An Anatomical, Hydrostatic, and Statistical Study

Table 1

Distribution of the fetuses examined.

Fetal age [weeks]	Crown-rump length [mm]				Sex
	Median	Minimum	Maximum		Males	Females
18	139.5	131.0	143.0	4	3	1
19	152.5	145.0	155.0	6	4	2
20	161.0	159.0	167.0	7	3	4
21	175.0	170.0	180.0	7	5	2
22	185.5	181.0	190.0	6	1	5
23	199.5	195.0	204.0	6	4	2
24	212.0	205.0	214.0	10	2	8
25	215.0	215.0	220.0	5	2	3
26	233.0	225.0	233.0	3	1	2
27	240.5	235.0	242.0	4	2	2
28	253.0	247.0	253.0	7	1	6
30	264.0	263.0	265.0	4	4	0

Note: for anatomists dealing with fetuses, the most objective information for establishing fetal ages is the crown-rump length, when compared to the known data of the beginning of the last maternal menstrual period or to ultrasonic measurements of head circumference, biparietal diameter, occipitofrontal diameter, abdominal circumference, and femur length.