[Two-phase dynamic CT and trans-abdominal ultrasonography for preoperative TNM staging of gastric carcinoma: a correlation study with surgery and pathology].
OBJECTIVE
To assess the value of two-phase dynamic CT and transabdominal ultrasonography in the preoperative staging of gastric carcinoma.


METHODS
Two-phase dynamic CT was performed in 63 cases of gastric carcinoma confirmed histologically by fibro-gastroscopic biopsy. Of the 63 cases, 20 had trans-abdominal ultrasonography (US) immediately after CT examination. Imaging findings were correlated with surgical and pathologic findings.


RESULTS
For evaluation of T and N staging, the accuracy of dynamic CT was 53.23% and 58%, respectively, that of CT in combination with US for T staging was 70%, which was statistically different from that of CT alone (P < 0.05). Accuracy of CT in combination with US for TNM staging was 90%, there was marked statistical difference (P < 0.05) compared with the accuracy of US.


CONCLUSIONS
The major role of dynamic CT in combination with trans-abdominal ultrasonography for staging of gastric carcinoma is to ascertain whether the tumor has invaded adjacent structures-T staging, which is helpful in treatment planning.
Cancer Institute(Hospital), Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing.
L
L
Jiang
M
M
Shi
N
N
Wu
D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009367:Neoplasm Staging / Q000379:methods*; D011300:Preoperative Care; D011446:Prospective Studies; D013274:Stomach Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D014057:Tomography, X-Ray Computed / Q000379:methods; D014463:Ultrasonography