[Evaluation of bladder tumor staging by submucosonography].
Submucosonography to stage tumors of the esophagus and stomach is well reported. Here we report our experience with a modified procedure to evaluate the stage of bladder tumor cystoscopically and compare the results of staging by other methods. The evaluation was carried out on accuracy 10 patients (10 bladder tumors). A water soluble contrast medium (CM: lohexol 33 mg/ml) was injected into the submucosa of the bladder cystoscopically. Usually the injected point was one centimeter to the urethral margin of the tumor and up to three points were selected. Within 30 minutes after the injection, the lateral and frontal X-ray pictures were taken. The accuracies of staging by submucosonography were compared with the results of other methods, i.g., ultrasonography (US), computed tomography (CT), magnetic resonance imaging (MRI). By submucosonography, three categories depending on the diffusion of CM were classified as follows. Type I: (diffuse type) without disturbance of diffusion. Type II: (borderline type) between type I and III. Type III: (defect type) local disturbance of diffusion. Overall accuracies of each were 70.0% (submucosonography), 62.5% (US), 44.4% (CT), 66.7% (MRI) respectively. The accuracies of submucosonography were high in stage Ta, above stage T2 and low in stage T1.
Onodera
Y
Y
Department of Urology, Fujigaoka Hospital, Showa University, School of Medicine.
Hamashima
T
T
Ikeuchi
T
T
Yoshikawa
H
H
Sasaki
H
H
Hasegawa
K
K
Yogi
S
S
Iguchi
H
H
Matsumoto
K
K
Kai
Y
Y
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002295:Carcinoma, Transitional Cell / Q000175:diagnosis / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009092:Mucous Membrane / Q000473:pathology; D009367:Neoplasm Staging; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography; D001743:Urinary Bladder / Q000000981:diagnostic imaging*; D001749:Urinary Bladder Neoplasms / Q000175:diagnosis / Q000473:pathology*