Intrapulmonary cellular schwannoma.
A 75-year-old asymptomatic woman was admitted to our hospital after an abnormal shadow was found on a chest roentgenogram. Chest computed tomography showed a round mass in the right lower lobe. Magnetic resonance imaging showed the mass with high signal intensity on T2-weighted images and intermediate signal intensity on T1-weighted images. Fluorine-18-fluorodeoxyglucose-positron emission tomography showed high fluorine-18-fluorodeoxyglucose accumulation in the mass. A lobectomy was performed thoracoscopically. The pathologic diagnosis was cellular schwannoma. Immunohistochemical staining demonstrated the presence of S-100 protein, and the Ki67 labeling index was 12%. We present this case of intrapulmonary cellular schwannoma, which is extremely rare.
Domen
Hiromitsu
H
Department of Surgery, National Hospital Organization Hakodate Hospital, Hakodate, Japan. domehiro@yahoo.co.jp
Iwashiro
Nozomu
N
Kimura
Noriko
N
Jinushi
Eisei
E
Komuro
Kazuteru
K
Ohara
Masanori
M
Ishizaka
Masanori
M
D000368:Aged; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000601:surgery; D009442:Neurilemmoma / Q000175:diagnosis* / Q000601:surgery; D011013:Pneumonectomy; D013906:Thoracoscopy