Value of ultrasonic probe in the diagnosis of submucosal tumor of colorectum

Abstract

Objective To assess the value of ultrasonic probe （USP） in the diagnosis of Submucous eminence of colorectume. Methods Sixty-eight patients with colorectal submucous eminence in 70 areas re-ceived USP under colonoscope. The accuracy of diagnosis was evaluated. Results Twenty carcinoid tumor were detected which manifested submucous hypoechoic; Lipoma 12,located in right half colon which manifes- ted submucous layer, clear boundaries byperechoic; Cyst 12 manifested single or muhi lattices no-echo on submucous which have integrated involucrum. Mesenchymoma or myoma levicellulare 12, most of them loca- ted inthe rectum manifested uniform or no-uniform hypoechoic on the muscularis mucosa or below and were difficult to discriminate. Malignant lymphoma,3 manifested muscularis mucosa and submucosa thickening, muscularis propria were seldom affected. Vascular diseases （hemangioma, varicosity） 3, manifested no-e- choic on mucosa or submucosa, some medium, high echoic, circular or irregular, and also endometriosis 2, pigment deposition 1, appendix abscess 1, extramural compression 2, ultrasonic test is marched with clinic diagnosis. Accuracy rate is 100%. Conclusion USP can diagnose colorectal submucous eminence with high accuracy, and even provide information about the size, layer of origin, border of the colorectal submu-cous eminence and can distinguish benign or malignant tumor according to ultrasonic check, at the same time provide differentiation with extramural compressive lesions. Key words: Colorectal neoplasms ; Endoscopic uhrasonography ; Diagnosis