[Prognostic value of endorectal ultrasonography in rectal cancer: results of a multifactorial analysis].
BACKGROUND
No study has evaluated the prognostic value of initial endorectal ultrasonography (ERUS) in rectal cancer (RC).


OBJECTIVE
To assess the prognostic value of initial ERUS in operated patients with RC.


METHODS
Eighty-four patients with non metastatic RC were examined by ERUS before treatment. Forty-two received preoperative radiation therapy and they were resected 7 weeks later on average. The prognostic value of uTN and pTN classification was analysed by means of a Cox model, taking into account the realization of preoperative radiation therapy.


RESULTS
In the univariate analysis, 4 variables were predictive of prognosis: elevation of alkaline phosphatases, the degree of circonference, the extension of the resection margin, and the involvement of perirectal lymph nodes. The multivariate analysis showed that when considering only pTN and uTN classifications, only uT and pN kept a significant prognostic value. The better prognostic role of uT was due to a close relationship with preoperative radiation therapy which was responsible for a significant downstaging.


CONCLUSIONS
Since preoperative radiotherapy has become a standard in France, the prognostic value of ERUS has emerged, better than pTN classification when radiotherapy has been preoperatively applied. Other prognostic factors should be investigated in a more homogeneous population of patients, all presurgically irradiated
Seicean
Radu
R
Clinica Chirurgie I, Str. Clinicilor no. 3-5, 3400 Cluj-Napoca, Romania.
Seicean
Andrada
A
Burtin
Pascal
P
Arnaud
Jean-Pierre
JP
Rousselet
Marie-Christine
MC
Cellier
Patrice
P
Dubois
Philippe
P
Boyer
Jean
J
D000368:Aged; D000369:Aged, 80 and over; D019160:Endosonography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009367:Neoplasm Staging; D011379:Prognosis; D012004:Rectal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology