title: [Pulmonary dirofilariasis with cavity formation and spontaneous regression].
abstract: 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.
authors: Third Department of Internal Medicine, National Defense Medical College, Saitama, Japan.
authors: T
authors: T
authors: Kuraki
authors: H
authors: H
authors: Kobayashi
authors: S
authors: S
authors: Shikata
authors: Y
authors: Y
authors: Uwabe
authors: N
authors: N
authors: Nagata
authors: M
authors: M
authors: Watanabe
authors: K
authors: K
authors: Takagi
authors: S
authors: S
authors: Aida
authors: S
authors: S
authors: Tamai
mesh_terms: D000368:Aged; D004184:Dirofilariasis / Q000000981:diagnostic imaging* / Q000473:pathology; D005260:Female; D006801:Humans; D008168:Lung / Q000473:pathology; D008174:Lung Diseases, Parasitic / Q000000981:diagnostic imaging* / Q000473:pathology; D013902:Radiography, Thoracic; D012075:Remission, Spontaneous