tological section of these area revealed patchy
loss of pigment cells at the base of the epidermis
andslightly edematous upper dermis and papillae.
The blood vessels showed slight vacuolation of
the media of the muscular arteries, but no
evidence of inflammation or neoplasm was found
as well as chronic dermatitis (Drs. M. Seki and T.
Yoneyama) (Plates 2 and 3). These findings
are similar to those observed in the Marshallese™.
In two cases who showed complete epilation,
small alopecias were still observed (T-2 and 7).
Thin hairs grew in the area. In T-7, grey hairs
seemed to be much comparing with age.
Besides those area, residual beta burns were
observed in small area of wrists (T-6 and K-7),
external ears (T-2, 7,8 and K-6), foot and leg
(K-8).
punctata was noted in T-6 who was examined
in Tokushima University Hospital.
As to the neuroretinalfindings, slight opacities
and pigmentation of macula were found in 3
cases, and slight arterio-sclerosis were observed
in 4 cases.
In general, it is still early to decide whether
these abnormalities in the exposed persons were
late effects of the exposure in 1954 or not. Precise
observations should be continued.
E.
Haematological Examinations
The results of haematological examinations
are presented in Table 4,
a, Peripheral blood
Leucocytes: Leucocyte numbers were distributed between 4,200 and 9,400.
D. Ophthalmological Examinations
Ophthalmological examinations were carried
Neutrophils: Numbers of neutrophils were
in normal range in all the cases except Case
T-3. Obvious shift to the left of nuclei. was
out on [+ hospitalized persons and 3 outpatients
by Dr. & Kubota, National Hospital of Chiba,
not found.
and Dr. N. Hirota, Yaizu City Hospital, respect-
over 2,000 in all the cases except Case
ively. The results are presented in Table 3.
Table 3.
Ophthalmological Examinations
Pterygium and pinguecula.....- 9 (T-3, T-8, K-2,
K-4,
K-5, K-8, K-1I, K-13,
K-16)
Corneal pigment..+.--sssseerseeseree 3 (K-2, K-4, K-10)
Vasculalisation -+scccccscscsecseves 2 (K+4, K-13)
Keratitis diffusass---+---ssseseeneees 2 (T-3, K-5)
Arcus
SONILIS -ccccsscscereverececeses 1 (K-11
Lenticularopacities -+++++-+++0++ 7 (T-2, T-3, T-6, T-7,
K-5, K-]1, K-16)
Vitreus opacities sees 1 (K-8)
Macular degeneration+---+++-+-- 3 (T-3, K-2, K-5)
Retinal arteriosclerosis ------.-- 5 (T-2, K-4, K-5, K-6,
K-9)
Strabismus csesescsecccceceseesssenes 2 (K-4, K-10)
Pterygium and pinguecula were observed in
9 persons. Corneal pigmentation was proved in
3 cases,
Lenticular opacities were noted in 7 cases; i. ¢.
Cases T-2 and T-7 showed slight opacity of
posterior capsule, cases T-3, K-5 and K~II had
opacities of subcortices.
Case K-16 showed
slight opacities of posterior cortex. Cataracta
Lymphocytes: Numbers of lymphocytes were
T-6
which showed lymphocyte level below 2,000
in every examination,
Eosinophils: Case K~2 showed eosinophilia
which had continued since acute stage.
sign of parasite was proved.
Basophils:
No
As to basophils, the rate to 3,000
leucocytes was calculated (Table 5).
Com-
paring with that of normal persons, slightly
high percentage of basophils was observed in
Case K-2 and Case K-9. The latter showed
similar rate in 1961 survey.
Monocytes: No pathological data was obtained on these cells.
T-3, K-5 and K-4 were chosen as representing cases at the acute stage with signs and
symptoms of marked degree, of moderate
degree, and of minimal degree, respectively.
The changes of WBC,neutrophils and lymphocytes are illustrated in Fig. 6-A, B and C.
T-3 showed slightly decreased values. Considering the myelogram of T-3, a slight mat-
uration arrest of myeloid cells might exist.
Platelets: Platelets counts (130~510 x 10°)
were normal.
Erythropoietic elements: Between the exposed