To investigate the CT appearances in early stage of clustering lung paragonimiasis,9 cases of two clustering lung paragonimiasis caused by eating raw stone-crab and laboratory examination were included in the study.Eight cases consulted by doctors in the hospital and their appearances were retrospectively analyzed.There were pleural effusion of varying degree (n=8) and random distribution sub-pleural pulmonary infiltrative lesions (n=7).The accompany appearances of the latter had lunar halo sign,characteristic tunnel sign (n=1) and peri-bronchitis (n=1).If CT detects pulmonary infiltrative lesions of random distribution within sub-pleura or tunnel sign,combining with the history of eating raw stone crabs and other freshwater fishes,with the rise of eosinophilic granulocytes in peripheral blood,the diagnosis of paragonimiasis should be suggested.
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