Thoeni R F, Venbrux A C
Radiology. 1982 Oct;145(1):17-9. doi: 10.1148/radiology.145.1.7122875.
Sixty-six patients with normal anal canals, 66 patients with internal hemorrhoids, and 6 patients with small cancers in the anal canal were examined by double-contrast barium enema examination. Internal hemorrhoids appeared as single nodules in 3 patients, multiple nodules in 59 patients, a polypoid mass in 3 patients, and a varicoid mass in 1 patient. Small cancers appeared as slightly irregular polypoid masses in 5 patients and as a plaque-like lesion in 1 patient. The sensitivity for detecting internal hemorrhoids was 83%, the specificity was 88%, and the overall accuracy was 86%. The sensitivity for detecting small cancers in the anal canal was 83% and the specificity was 98%. Internal hemorrhoids and small cancers in the anal canal can be easily detected and distinguished from one another by double-contrast barium enema examination.
对66例肛管正常患者、66例内痔患者和6例肛管小癌患者进行了双重对比钡灌肠检查。内痔表现为：3例为单个结节，59例为多个结节，3例为息肉样肿物，1例为静脉曲张样肿物。小癌表现为：5例为轻度不规则息肉样肿物，1例为斑块样病变。检测内痔的敏感性为83%，特异性为88%，总体准确率为86%。检测肛管小癌的敏感性为83%，特异性为98%。通过双重对比钡灌肠检查可轻松检测出内痔和肛管小癌，并将它们彼此区分开来。
