The aim of this study is to evaluate advantages and disadvantages of ultrasound (US) in Crohn's disease (CD). 68 patients with CD were examined sonographically after enteroclysis (EC). Findings in EC were divided into four groups: Early (n = 15), moderate (n = 19), severe (n = 22), complicated (n = 12). No pathologic changes were detected in the early group on US. In the remaining, typical finding was wall thickening. On US, one fistula and nine abscesses were diagnosed while three enteroenteric fistulas and eight structures could not be detected. Performing US, after EC which provides enough luminal distension, enables to detect the mural and extramural pathologies easily. In this manner, although not a primary diagnostic modality, baseline US study after EC completes the radiologic work-up in CD as well as helps in the follow-up period of this longstanding and complicating disease.