Pulmonary dirofilariasis with cavity formation and spontaneous regression
Kuraki, T.; Kobayashi, H.; Shikata, S.; Uwabe, Y.; Nagata, N.; Watanabe, M.; Takagi, K.; Aida, S.; Tamai, S.
Nihon Kyobu Shikkan Gakkai Zasshi 34(6): 685-688
1996
ISSN/ISBN: 0301-1542 PMID: 8741535 Document Number: 458021
A 70-year-old woman was admitted to our hospital for evaluation of a nodular shadow and an apparent cavity in the right middle lung field. Transbronchial biopsy and percutaneous needle biopsy had failed to result in a diagnosis. Serial chest X-ray films revealed slight regression of the nodule without therapy. Pulmonary dirofilariasis was diagnosed after open-lung biopsy and Ouchterlony's double diffusion test. Cavity formation and spontaneous regression are rare in pulmonary dirofilariasis.