Im J G, Kong Y, Shin Y M, Yang S O, Song J G, Han M C, Kim C W, Cho S Y, Ham E K
Department of Radiology, Seoul National University, College of Medicine, Korea.
Radiographics. 1993 May;13(3):575-86. doi: 10.1148/radiographics.13.3.8316665.
Pulmonary paragonimiasis is a disease caused by a lung fluke. It is endemic to East Asia, but there have been several case reports in North America. Human infestation occurs by ingestion of raw or incompletely cooked freshwater crab or crayfish infected with metacercaria. A retrospective study was performed with 78 patients who lived in South Korea and had chest radiographic findings of pleuropulmonary disease; it was subsequently shown that they had paragonimiasis. The diagnosis was based on positive results of serologic tests for Paragonimus-specific antibody or on the detection of eggs in sputum samples. Radiologic findings from these 78 patients were correlated with the pathologic and radiologic findings from a study of experimentally induced pulmonary paragonimiasis in 21 cats. Findings from the correlative study document that the typical radiologic manifestations of pulmonary paragonimiasis vary with the stage of the disease. Early findings include pneumothorax or hydropneumothorax, focal airspace consolidation, and linear opacities and are caused by the migration of juvenile worms. Later findings include thin-walled cysts, dense masslike consolidation, nodules, or bronchiectasis and are due to worm cysts.
肺吸虫病是由肺吸虫引起的一种疾病。该病在东亚为地方性流行病，但在北美也有一些病例报告。人体感染是由于摄入了感染有后尾蚴的生的或未煮熟的淡水蟹或小龙虾。对78名居住在韩国且胸部X线检查有胸膜肺部疾病表现的患者进行了一项回顾性研究；结果显示他们患有肺吸虫病。诊断依据是肺吸虫特异性抗体血清学检测呈阳性，或在痰液样本中检测到虫卵。将这78例患者的影像学表现与对21只猫进行实验性诱导肺吸虫病研究中的病理和影像学表现进行了对比。对比研究结果表明，肺吸虫病的典型影像学表现因疾病阶段而异。早期表现包括气胸或液气胸、局灶性气腔实变以及线状阴影，是由幼虫移行引起的。后期表现包括薄壁囊肿、致密的肿块样实变、结节或支气管扩张，是由虫囊肿引起的。
