Pathology of the migration phase of Taenia hydatigena (Pallas, 1766) larvae.
Pathology of the migration phase of Taenia hydatigena (Pallas, 1766) larvae.
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水带绦虫（Pallas，1766）幼虫迁移阶段的病理学。
作者：
K. Blažek;J. Schramlová;D. Hulínská
C.移行期的病理图像。猪细颈症的特征在于肝实质内和肝表面下的出血。出血是由迁飞幼虫破坏肝窦引起的，代表迁飞性肝管。大约在p.i.出现浆液性腹膜炎，渗出液中出现游离囊尾蚴。在第14-16天p.i.渗出性腹膜炎可能增加。囊尾蚴位于浆膜下或浆膜上。在约第10天，甚至可能发生肺部疾病。在第13天，p.i.囊尾丝虫存在于肺动脉腔中或从肺动脉腔中迁移出来。肺部和胸膜的变化及其动态变化与肝脏和腹膜的变化相同。在感染后第21-24天，其特点是大量的浆膜粘连，囊尾蚴与浆膜牢固附着。在第35天p.i.结缔组织粘连持续存在，并且许多囊尾蚴表现出营养不良的变化或死亡并且通常已经钙化。假囊壁由纤维细胞和浆膜组成，囊内不像C. bovis和C。猪囊菌。
The pathological picture of the migration phase of C. tenuicollis in pigs is characterized by a haemorrhagia within the liver parenchyma and under the liver surface. The haemorrhagia, which represents a migrational canal, is induced by the destruction of liver sinuses by migrating larvae. Approximately on day 10 p.i. a serofibrinous peritonitis occurs and free cysticerci appear in the exudate. On days 14-16 p.i. the exudative peritonitis may increase. The cysticerci are localized under the serosas or on them. On about day 10 p.i. even the pulmonary form of the disease may occur. On day 13 p.i. the cysticerci are present in the lumen of lung arteries or they migrate out of them. The changes in the lungs and on the pleura, as well as their dynamic changes, are identical with the changes in the liver and on the peritoneum. The period on days 21-24 p.i. is characterized by extensive synechiae of serosas and the cysticerci are firmly attached to the serosas. On day 35 p.i. the connective tissue adhesions persist and many of the cysticerci exhibit dystrophic changes or are dead and often already calcified. The wall of the pseudocyst, in which the cysticercus is situated, consists of the fibrocytes and serosa, and its cavity is not lined with endothelium, as it is the case in C. bovis and C. cellulosae.