(A) new roentgenological studies in diagnosis of the tumours and the ulceration in the stomach
The Balloon Insufflation Method was employed in the present study to make early
and differntial diagnosis of certain gastric disorders, particularly carcinoma and
ulceration in the stomach and much more accurate diagnosis was obtained comparing
to gastric examination methods customarily employed.
1. Difference in appearance of ulcer margin between benign and malignant ulcers
was so markedly obvious that differential diagnosis of some benign and malignant
ulcers which thus far could not be made was easily reached.
In benign ulcers, a clear and sharp demarcation was observed, while in malignant
ulcers, the ulcer margin showed irregular and hazy.
In case when the ulcer size was same, the size of ulcer crater in the malignant
from became reduced or disappeared as insufflation of ballon increased.
2. A curved lihear shadow along the tumour edge was observed in gastric
carcinoma, and it was named "edge-line" by the author temporarily in this study.
The edge-line is produced by the difference in height between tumour and normal
mucosa levels, or that of tumours themselves, and its inner margin was sharply
demarcated by tumour mass, while the outer margin showed an impression of gradual
fade-out. In some cases where more than two edge-lines appeared, the outer most
edge-line coincided with the tumour border.
3. The gastric wall with carcinoma infiltration or benign organic contraction
becomes less elastic and does not expand easily as in normal gastric wall.
Therefore, the stronger the insufflation force. the greater the ratio of length
between the greater and lesser curvature. When the lesser curvature was mainly
involved, the concavity of the lesser curvature became increased as stronger
insufflation was applied.
4. Tumour mass protruding into the gastric cavity was clearly demonstrated by the
tightly surroundinf balloon.
5. In patient with obstructive or stenotic symptom, the stenotic portion was
clearly by this method.
6. The Ballon Insufflation Method enables a simultaneous examination of gastric
juice. The gastric juice studies by the caffeine meal test and histamine test were
7. The radiation hazard could be reduced by this method because of lesser
exposure to both radiologist and patients by reducing the numbers of X-ray pictures.