Diagnosis of chest wall invasion by lung cancer: useful criteria for exclusion of the possibility of chest wall invasion with MR imaging.
OBJECTIVE
To compare the accuracy of thin-section CT, conventional static MR imaging (conventional MRI), and breathing dynamic echo planar magnetic resonance imaging (BDEPI) in evaluating lung cancer invasion to the chest wall.


METHODS
Thin-section CT, conventional MRI, and BDEPI were performed preoperatively in 20 patients suspected of having primary lung cancers adjacent to the chest wall on conventional CT. The results of imaging findings were compared with those of surgical and histopathological findings.


RESULTS
All patients were confirmed to have no chest wall invasion after surgery. By thin-section CT, 10 of 20 patients were correctly diagnosed as having no chest wall invasion (50% specificity). Two of the 20 patients were incorrectly diagnosed as having chest wall invasion by conventional MRI and BDEPI (90% specificity).


CONCLUSIONS
When chest wall invasion is suspected on CT scans, static and breathing dynamic MRI are recommended to avoid false positive interpretations.
Shiotani
S
S
Department of Radiology, Tsukuba Medical Center, Ibaraki, Japan.
Sugimura
K
K
Sugihara
M
M
Kawamitsu
H
H
Yamauchi
M
M
Yoshida
M
M
Kushima
T
T
Kinoshita
T
T
Endoh
H
H
Nakayama
H
H
Kajitani
M
M
Wada
M
M
D000230:Adenocarcinoma / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002294:Carcinoma, Squamous Cell / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D003287:Contrast Media; D003937:Diagnosis, Differential; D017352:Echo-Planar Imaging / Q000379:methods; D005189:False Positive Reactions; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D007089:Image Enhancement; D008175:Lung Neoplasms / Q000473:pathology* / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D010997:Pleural Neoplasms / Q000175:diagnosis / Q000473:pathology / Q000601:surgery; D012680:Sensitivity and Specificity; D013899:Thoracic Neoplasms / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed
D003287:Contrast Media; D019786:Gadolinium DTPA