IAEA-SM-L19/8
More recently several other children with lesser degrees vf retardatLlon

of 4
odules

of

prowth had berun

to shew sume dexree of

In view of the seriousness of the above findings it was decided
several years apo to give thyroid hormone therapy to the exposed people,
The rationale for this therapy was to furnish normal levels of cxonenous
thyroid hormone thereby repressing pituitary TSH levels and removing

969,
ac

reatviously

the gland

bren
she
und

from stimulatien of

that

hormone,

Effectiveness

of

treatment

in regard to inhibition cf growth of nodules is difficult to evaluate
in view of uncertainty of adherence to a strict treatment regimen in

some of th: people. however the effect on growth and development of
the body appears to be encouraging. The two boys who had snowed hypo-

surgery.

thyroidism and the greatest growth retardation showed definite enhancement.
Fig. 5 shows the results of hormone treatment in these two boys on

ELOPMENT

development as evaulated by skeletal age. Fig. 6 shows the increased
growth and improved appearance of one of these boys following hormone
treatment.

“~~

js

2

e

Ee

|

—
“—

ei

}

q
vr,

wanes

i

a
Te

\

(i

BS

7" «

“x's

i

- #

\

f

Fa

C

_

=

true

pase

i

-lese

|

| Fee ey

ted
, about
> Lact

|

No

iger. 4]

4

4

c studies
hildren,
e
arly
.o were

>

thyroid deficiency prior to

surgery,
This was based on lowered thyroxine levels, inereased levels
of TSH, reduced uptake of radioiodine and poor response to TSil stimulation,

lar

a

333

\

\
}

I
it.

{
1

|

|
’

.

t

\

Ro

bs
ne

we

=
\;

.

BO
+

rofmone cherapy

FiG.8. On left, boy with marked growth retardation and hypothyroidism before thyroid hormone treatment, and on right same boy 6 months after treatment narted. (No.3 in Fig.5).

CPF

snt in two

Select target paragraph3