[A case of pulmonary dirofilariasis that required differentiation from nontuberculous mycobacteriosis].
A 48-year-old man was admitted with an abnormal shadow on a chest X ray. Chest X ray and CT revealed a solitary nodule in the right lung field. Mycobacterium gordonae was cultured from sputum. Tumorectomy by video-assisted thoracoscopic surgery was done for histological diagnosis, and Dirofilaria worms accompanied with epithelioid cell granuloma with necrosis were found, while no bacteria were cultured from biopsy specimen, thus we diagnosed dirofilariasis. Because a solitary nodule can be caused by either Dirofilaria species or nontuberculous mycobacteria, this case was of interest with regard to the differential diagnosis of a lung solitary nodule.
Niimi
Takashi
T
Department of Internal Medicine and Molecular Science, Nagoya City University Graduate School of Medical Sciences.
Sato
Shigeki
S
Maeda
Hiroyoshi
H
Yamada
Noriko
N
Oguri
Tetsuya
T
Achiwa
Hiroyuki
H
Muramatsu
Hideki
H
Bessho
Yuji
Y
Miyazaki
Mikinori
M
Takano
Yuko
Y
Shimizu
Shigeki
S
Ueda
Ryuzo
R
D003937:Diagnosis, Differential; D004184:Dirofilariasis / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D008174:Lung Diseases, Parasitic / Q000000981:diagnostic imaging* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009165:Mycobacterium Infections, Nontuberculous / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed