Sussman S K, Halvorsen R A, Illescas F F, Cohan R H, Saeed M, Silverman P M, Thompson W M, Meyers W C
Department of Radiology, Duke University Medical Center, Durham, N.C.
Radiology. 1988 May;167(2):335-40. doi: 10.1148/radiology.167.2.3357941.
Seventy-five patients with gastric carcinoma underwent preoperative staging with computed tomography (CT). In 14 patients, CT failed to demonstrate lymphadenopathy despite the presence of malignant lymph nodes at surgery. In 13 patients, CT demonstrated enlarged nodes, but no malignant involvement was found at surgery. Although spread to the pancreas was correctly predicted in three patients with lack of fat plane between tumor and pancreas, five patients lacking a fat plane had no invasion, whereas eight patients with an intact fat plane had invasion. Thirty-five patients (47%) were incorrectly staged with CT:23 (31%) were understaged and 12 (16%) were overstaged. CT does not accurately display the true extent of disease in patients with gastric carcinoma and therefore should not be used routinely for staging.
75例胃癌患者接受了术前计算机断层扫描（CT）分期。14例患者CT未显示淋巴结肿大，尽管手术时发现存在恶性淋巴结。13例患者CT显示淋巴结肿大，但手术时未发现恶性侵犯。尽管在3例肿瘤与胰腺之间缺乏脂肪平面的患者中正确预测了肿瘤向胰腺的扩散，但5例缺乏脂肪平面的患者并无侵犯，而8例脂肪平面完整的患者却有侵犯。35例患者（47%）CT分期错误：23例（31%）分期过低，12例（16%）分期过高。CT不能准确显示胃癌患者疾病的真实范围，因此不应常规用于分期。
