[Transrectal ultrasonography in the study of recurrences in patients surgically treated for rectal neoplasms].
The value of transrectal US is known in the preoperative staging of rectal cancer but remains debated in the follow-up of the patients submitted to anterior resection or local therapy. The authors report their experience with the postoperative follow-up of 80 patients submitted to 125 transrectal US exams to study method reliability. The results were 9 true positive, 2 false positive, 113 true negative and 1 false negative cases, with 90% sensitivity, 98.3% specificity and 97.6% accuracy rates. Positive predictive value was 81.8% and negative predictive values was 99.1%. Twelve patients were submitted also to MRI which correctly diagnosed one false negative result of transrectal US. Twenty-one patients were examined also with transrectal Doppler and color-Doppler US: in rectal cancer recurrences the peak velocity of hemorrhoid vascular flow was higher than in non-recurrent patients. On the basis of our results, transrectal US deserves to be included in the postoperative follow-up of the patients submitted to anterior resection or to local therapy for rectal cancer. Moreover, according to our preliminary findings, Doppler and color-Doppler US can improve transrectal US reliability in detecting local recurrences.
Ghigi
G
G
Istituto di Radiologia, Università di Bologna.
Garcea
D
D
Canini
R
R
Battista
G
G
Boriani
F
F
Salizzoni
E
E
Carli Moretti
C
C
Talarico
F
F
Accorsi
D
D
Corinaldesi
A
A
D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000000981:diagnostic imaging* / Q000473:pathology; D012004:Rectal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D012007:Rectum; D012680:Sensitivity and Specificity; D014463:Ultrasonography / Q000379:methods
Studio mediante ecografia transrettale delle recidive nei pazienti operati per neoplasia rettale.