Organ measurements reference

Vagina

Aprox 9 cm in length

Uterine

8-10 cm Length, 3-5 cm Width

Fallopian tubes

10-12 cm Length, 1-4 mm in diameter

Ovaries

Aprox 3 cm long

Endometrium (menstrual)

2-4 mm

Endometrium (Proliferative)

4-8 mm

Endometrium (late Proliferative) @days 14 Ovulation

6-10 mm

Endometrium (Secretory)

7-14 mm

Endometrium (post m-pause)

less than 5 mm

Endometrium (post m-pause with HRT replacement)

up to 8mm

Abdominal Aorta

less than 3cm

Iliac vessel

less than 2 cm

Uterine Prepubertal

cervix occupies 2/3rds of uterine length; uterus is 1-3 cm in length and 0.5-1 cm in width.

Uterine Nulliparous (child bearing age)

cervix occupies 1/3 of uterine length; uterus is 6-8 cm in length and 3-5 cm in width.

Uterine Postmenopausal

cervix occupies 2/3rds of uterine length; uterus is 3-5 cm in length and 2-3 cm wide

Ovaries (average)

3 cm L x 2 cm W x 1 cm AP

Ovaries mean volume Premenarchal

3 cm cubed - 8 cm cubed

Ovaries mean volume Normal menstruating

9.8 cm cubed - 21.9 cm cubed

Ovaries mean volume Postmenopausal

5.8 cm cubed - 8 cm cubed

dominate follicle in the ovary at the time of ovulation

2-2.5 cm

Liver (Sag)

15-17.5 cm

Liver (trans)

21-22.5

Liver (mid cliv)

less than 15cm (most common measurement of the liver)

Vaginal cuff

2.1 cm

Common Hep Duct

4mm

Common Bile Duct

6mm

Cystic Duct

4cm

Gallbladder

<4 cm diameter (trans), <10cm length (long), wall thickness <3mm

Hyperplasia premenopausal

> 14 mm ( double thickness)

Hyperplasia postmeno

8mm (double thickness)

Ovarian volume

largest 22cc, mean ovarian vol 9.8 plus or minus 5.8

Post menopause ovarian volume

> 8 cc abnormal

Panc

15 cm L (12-18) thickness 2-3 cm (AP)

Panc head

Widest-<3cm AP

Panc neck

< 2.5 cm AP

Panc body

thinner than head <2.5 cm AP

Panc tail

hard to image <2.0 cm AP

Functional cyst

< 5cm

Functional cyst

< 5cm

Follicular cyst

< 2 cm (as large as 20cm)

Corpus luteum cust

< 4cm (may grow to 1-10cm)

Graafian follicle

2-2.5 cm

Ovarian hyperstunulation (OHS)

> 10 cm ovaries with multiple cysts

PCOS

increase # of small follicules (<1 cm) in outer edge, string of pearls

Benign cyst in fetus & adolescents

simple cyst- 1-7 mm

premenarch girls- less than 9mm

ovarian torsion-endematous ovary

ovarian neoplasms

> 5 cm surgical removal

digestive tract

8 m long

sml intestines

5 m long, 4 cm diameter

ileum wall thickness

under 3mm

colon wall thickness

4mm

kidney

9-12 cm length

5 cm width

2.5 cm AP

kidney cortex

> 1 cm

ureter

25 cm length

hysterosalpingography (HSG)

< 1 mm diameter, cervical stenosis