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Paragonimus westermani의 肺臟에 이르는 移行經路 및 態度에 關한 硏究
이연호 中央醫學社 1942 中央醫學 Vol.11 No.3
Yokogawa (1915) and several other workers reported that the excysted larvae of Paragonimus westermani in intestine reached the lungs via intestinal wall, peritoneal cavity, diaphragm and pleural cavity. Although Nakagawa (1915) and Ando (1915) found the presence of Paragonimus larvae in the abdominal wall muscle of experimental animals, they considered those findings were as one of the heterotopic parasitism. However, recently Yokogawa et al (1962) conducted more detailed experiments on the migration routes of Paragonimus westermani in cats and rats, and they found the larvae in peritoneal cavity migrated into abdominal muscle as a normal route. Yokogawa (1957) and Takizawa (1964) reported that the migration routes varied according to ,the species of host: favorable or unfavorable. Recently Yokogawa (1957) found that the larvae in the abdominal muscle of favorable hosts returned to the peritoneal cavity before taking the route e to the lungs, but not always in unfavorable hosts. Especially in unfavorable hosts there were no reliable reports concerning the further route of the larvae from the abdominal muscle, although some of them reached the lungs. The present studies were designed to clarify which was the normal route of larval migration of Paragonimus westermani and secondly to confirm whether the lungs were the favorite site for the development of the parasites among organs of the host, specially in the unfavorable ones.