[Pulmonary dirofilariasis with cavity formation and spontaneous regression].
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.
Kuraki
T
T
Third Department of Internal Medicine, National Defense Medical College, Saitama, Japan.
Kobayashi
H
H
Shikata
S
S
Uwabe
Y
Y
Nagata
N
N
Watanabe
M
M
Takagi
K
K
Aida
S
S
Tamai
S
S
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