Preliminary results of endorectal surface coil magnetic resonance imaging for local staging of prostate cancer.
OBJECTIVE
To evaluate the effectiveness of endorectal surface coil (ERC) magnetic resonance imaging (MRI) in the local staging of adenocarcinoma of the prostate (ACP).


METHODS
A total of 23 patients who were considered candidates for radical prostatectomy because of clinically localized ACP were examined by ERC-MRI. All patients underwent laparoscopic or open lymph-node dissection prior to surgery. Four patients had positive lymph nodes at operation. A total of 19 underwent radical prostatectomy, allowing comparison of the MRI data with the surgical pathologic findings.


RESULTS
Twelve patients had extraglandular spread of ACP (T3) and 7 had locally confined ACP (T2). ERC-MRI predicted correctly a T3 tumor in 10 of 12 cases and a T2 tumor in 4 of 7 cases. ERC-MRI was 74% accurate in differentiating T2 from T3 tumor. Three cases of overestimation were in studies with poor image quality because of bowel movement motion artifacts.


CONCLUSIONS
ERC-MRI was found to be a sensitive modality in staging clinically localized ACP.
Jager
G J
GJ
Abteilung für Abdominale Röntgendiagnostik, Radiologische Universitätsklinik, Nijmegen, Neiderlande.
Barentsz
J O
JO
de la Rosette
J J
JJ
Rosenbusch
G
G
D000230:Adenocarcinoma / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009367:Neoplasm Staging; D011471:Prostatic Neoplasms / Q000473:pathology*