Transrectal ultrasonography of anorectal diseases: Advantages and disadvantages

Min Ju Kim

    Research output: Contribution to journalArticlepeer-review

    25 Citations (Scopus)


    Transrectal ultrasonography (TRUS) has been widely accepted as a popular imaging modality for evaluating the lower rectum, anal sphincters, and pelvic foor in patients with various anorectal diseases. It provides excellent visualization of the layers of the rectal wall and of the anatomy of the anal canal. TRUS is an accurate tool for the staging of primary rectal cancer, especially for early stages. Although magnetic resonance imaging is a modality complementary to TRUS with advantages for evaluating the mesorectum, external sphincter, and deep pelvic infammation, three-dimensional ultrasonography improves the detection and characterization of perianal fstulas and therefore plays a crucial role in optimal treatment planning. The operator should be familiar with the anatomy of the rectum and pelvic structures relevant to the preoperative evaluation of rectal cancer and other anal canal diseases, and should have technical profciency in the use of TRUS combined with an awareness of its limitations compared to magnetic resonance imaging.

    Original languageEnglish
    Pages (from-to)19-31
    Number of pages13
    Issue number1
    Publication statusPublished - 2014 Nov 19


    • Anal canal
    • Fistula
    • Rectal neoplasms
    • Ultrasonography

    ASJC Scopus subject areas

    • Radiology Nuclear Medicine and imaging


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