Gastrointestinal submucosal tumors: evaluation with endoscopic US.

• DOI: 10.1148/radiology.205.3.9393529
• Publication Date: 2014-07-08T16:26:23Z
• Authors: K Kawamoto; Y Yamada; T Utsunomiya; H Okamura; M Mizuguchi; M Motooka; N Hirata; H Watanabe; K Sakai; S Kitagawa; N Kinukawa; K Masuda
• Keywords: Echogenicity; Benignity; Endoscopic Ultrasound

PURPOSE: To describe the endoscopic ultrasound (US) features of benign versus malignant submucosal tumors throughout gastrointestinal tract. MATERIALS AND METHODS: One hundred nine patients aged 24-81 years suspected to have (11 esophageal, 41 stomach, 24 duodenal, and 33 colorectal tumors) at barium studies or endoscopy underwent US. The layer origin, internal echo pattern, lesion margin were analyzed by means consensus independent interpretation three radiologists. RESULTS: Endoscopic US findings revealed several distinct patterns among various tumors. Sixteen (94%) 17 homogeneous lesions with histopathologic malignancy hypoechoic, although 29 (43%) 68 benignity similarly hypoechoic. Homogeneous that anechoic, intermediate echogenicity, hyperechoic almost exclusively (39 [98%] 40). In contrast, 23 (96%) heterogeneous (n = 7) homogeneously hypoechoic 16). sizes significantly different (P < .05). There was no significant difference in pattern (i.e., heterogeneous), but there a proportion nonhypoechoic (anechoic, hyperechoic, echogenicity; P .001). CONCLUSION: differential diagnosis is assisted