Zaunbauer W, Haertel M, Fuchs W A
Gastrointest Radiol. 1981 Jan 15;6(1):79-84. doi: 10.1007/BF01890226.
A total of 11 cases of untreated carcinoma of the rectosigmoid colon and 56 cases of recurrent rectosigmoid carcinoma have been investigated by computed tomography. A tumor size of more than 2 cm in diameter is easily demonstrated within the rectosigmoid wall. Invasion of the pararectal fatty planes and the neighboring structures and organs is conclusively diagnosed when obliteration of the demarcating fat planes is demonstrated. Enlargement of the regional lymph nodes of more than 15 mm diameter indicates malignant metastatic spread. Local malignant recurrence following complete resection of the rectum is recognized when the tumor size has reached 2 cm or more. Fine-needle aspiration biopsy may be necessary to conclusively identify malignant tissue within the postoperative cavity.
共有11例未经治疗的直肠乙状结肠癌和56例复发性直肠乙状结肠癌接受了计算机断层扫描检查。直径超过2厘米的肿瘤在直肠乙状结肠壁内很容易显示出来。当分界脂肪平面消失时，可明确诊断直肠旁脂肪平面及邻近结构和器官受侵。区域淋巴结直径增大超过15毫米提示恶性转移扩散。直肠完全切除术后局部恶性复发是指肿瘤大小达到2厘米或更大时。可能需要进行细针穿刺活检以明确识别术后腔内的恶性组织。
