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胃潰瘍の病因論には種々あって,実験潰瘍学という名前があるほど,動物を用いて各種の研究が盛んに行われているし,また臨床的にはCushingulcer,Curling ulcer,Stress ulcer,Steroid ulcerなどと特別に呼ばれる潰瘍があって,それぞれが潰瘍の病因を示唆すると考えられている.しかしそれらを一元的に解釈するほどの定説はまだでき上っていない.これに反して,潰瘍の組織発生論のほうは大体定説化され,消化液(酸・ペプシン)によるいわゆる組織の凝固壊死Coagulation necrosisがその発生像で,それが数日で脱落したあとに,潰瘍あるいはびらんが形成されるものと信じられるようになった.またこれらの潰瘍やびらんは比較的短時間(週の単位)に修復されるが,同時にまた再発ないしは再燃に陥りやすいと考えられている.
しかしこの病理組織学的な発生論はあくまで多くの病理組織像を繋ぎ合わせて組み立てた推論であって,さらに真実であるとするためには,その経過が臨床的に忠実に追跡される必要がある.従来はこの種の臨床的追及はほとんど不可能であったが,最近は幸いに,胃粘膜を直視できる内視鏡が発達したので,不可能ではなくなった.しかし依然として困難であることには変わりはない.その理由にはいくつかあるが,癌のように病態が完成するまでに長時間を要する疾患にくらべると,凝固壊死の発生に要する時間はきわめて短く,その瞬間を証明するのに非常に不利であるということがもっとも決定的な理由である.
We have picked up pertinent cases out of about 1,000 cases of hemorrhagic erosions (HE) experienced at Karasawa Hospital to investigate devlopment or ripening process of gastric ulcer. However, as inference was difficult by the study of chronic round ulcer itself, we have tried to draw inference of formation or ripening process of solitary round ulcer from those of kissing ulcers.
1, HE arising from virgin mucosa remains as Ul-Ⅱ at the utmost in the pyloric antrum, and we have reported that usually it does not reach deeper layers.
In one case we have demonstrated that the same must be true in HE occurring at the gastric angle and on the lesser curvature of the body. Another case made us to come to the same conclusion.
2, Ulcers on the body seem to assume the same patterns, either Ul-Ⅲ or Ul-Ⅳ. We have presented here a case in which repetitions of HE lesions played a sure and decisive role in the development of such ulcers.
3, A case is presented here in which ulcer scars formed locus minoris resistentiae at the time of peptic attack striking the gastric mucosa.
4, Kissing ulcers show various patterns of development; some would arise synchronously and occupy the same extent; and some would develop diachronically and be of different proportions.
5, Repetitions of HE would result in chronic gastritis in the pyloric antrum as in chronic ulcers on the lesser curvature of the body. We cannot as yet explain its reason, but we were able to dissolve to some degree the exsisting disassociation between HE and chronic ulcer by the study of the development of kissing ulcers.
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