measurements & dates for small parts

What is the normal adult thyroid isthmus measurement?

4-6 mm

Parathyroid glands typically measure how large?

Less than 4 mm

What is the normal adult thyroid length measurement?

4-6 cm

What is the normal adult thyroid height measurement?

2-3 cm

What is the normal adult thyroid width measurement?

1.3-1.8 cm

1. A parathyroid adenoma will typically measure less than…

2. But the largest adenoma could measure greater than…

1. 3 cm

2. 5 cm

The thyroid emerges by what gestational week?

Week 3 or 4

What gestational week will the thyroid divide into two lobes and be connected by the isthmus?

Week 7

What is the normal measurement for bursa?

Less than 2 mm

What measurement would be considered an thickened lymph node cortex?

Greater than 3 mm

What gestational week will breast structure development take place?

Week 15

A normal spermatic cord will measure up to __ mm in diameter.

2 mm

An abnormal spermatic cord will measure over __ mm in diameter.

2 mm

What is the testicular length measurement?

3-5 cm

What is the testicular height measurement?

2-3 cm

What is the testicular width measurement?

2-3 cm

An abnormal varicocele will be greater than…

2 mm

Masses of benign Leydig and Sertoli cell tumors are small, less than…

1 cm

What is the length x height x width measurement for the prostate?

4 cm x 3 cm x 2 cm

What gestational week will the prostate begin to form?

Week 11

A mega cisterna magna will measure greater than…

10 mm

What is the measurement for a mild dilation of the ventricles of an intracranial hemorrhage?

8-10 mm

What is the measurement for a moderate dilation of the ventricles of an intracranial hemorrhage?

11-14 mm

What is the measurement for a severe dilation of the ventricles of an intracranial hemorrhage?

Greater than 14 mm

A choroid plexus cyst associated with chromosomal abnormalities (i.e., trisomy 21) will measure greater than…

10 mm

Intracranial bleeds can occur in premature babies under the age of __ gestational weeks.

34 weeks

The primary brain vesicles are seen at what week?

Week 4

The secondary brain vesicles are seen at what week?

Week 5

The filum terminale should measure less than…

2 mm

1. A subluxable hip is when the proximal femur moves more than __ mm to the left.

2. And more than __ mm to the right.

1. 6 mm

2. 4 mm

Defects in the spine will typically occur in the first __ weeks of life.

Week 8½

1. What week will the head of the femur ossify?

2. But it can occur between __ and __ months.

1. Week 4

2. 3 and 8 months

Hip instability may resolve after __ to __ weeks.

4-6 weeks

Laxed hips will resolve after __ weeks

6 weeks

The femoral head should be stable within the acetabulum with stress after __ weeks of age.

4 weeks

Within __ to __ weeks of treatment, the hip join often times should stabilize.

6-8 weeks

The neural plate forms at __ to __ days after conception.

18-20 days

An intracranial hemorrhage usually occurs within the first __ days of life.

4 days

Chronic testicular torsion is when torsion has lasted for more than __ days.

10 days