High-frequency ultrasound probe sonography staging for colorectal neoplasia with superficial morphology: its utility and impact on patient management

Abstract

The impact of HFUPS on the treatment of SCN depends on their endoscopic characteristics. It is negligible for low-risk SCNs, and these lesions can be treated on the basis of their endoscopic appearance alone. Nevertheless, compared with endoscopy alone, HFUPS changed the subsequent therapeutic approach in a positive way for up to 42% of high-risk lesions, including those with a depressed component and an invasive pit pattern. These endoscopic features can therefore be recommended as the entry criteria for an HFUPS examination.

Management of the malignant colorectal polyp: ACPGBI position statement

“…Endoluminal endoscopic ultrasound shows more promise. For T staging, before removal of a suspicious polyp, endoscopic ultrasound has a reported accuracy of 66-93% [160,[213][214][215][216]. Hurlstone et al [213] showed a high level of accuracy in staging malignant polyps.…”

Thin-probe endoscopic ultrasonography for surgical resection of early colorectal neoplasms: A pilot study

“…EUS has been considered useful for tumor staging of colorectal cancers; however, its real clinical impact for deciding on the indication for surgical operation is still not clear [13][14][15]. In the present EUS study, when the change for the third layer (submucosal layer) was 1 millimeter or more the histological SM invasion depth was 4.3 mm.…”

Small carcinomas involving less than one‐quarter of the rectal circumference: local excision is still associated with a high risk of nodal positivity

“…Imaging methods used to diagnose tumour size and the degree of malignant invasion have limited sensitivity and specificity . Determining the relationship between the size of residual rectal wall lesions after neoadjuvant CRT and the pathological response was the subject of a study by Smith et al .…”

“…When selecting patients suitable for total mesorectal excision, careful preoperative staging is especially important, as well as a perfect surgical technique with excision of the lesion across the full thickness of the rectal wall with a 10-mm border of macroscopically healthy tissue [18,19]. Imaging methods used to diagnose tumour size and the degree of malignant invasion have limited sensitivity and specificity [20][21][22][23][24]. Determining the relationship between the size of residual rectal wall lesions after neoadjuvant CRT and the pathological response was the subject of a study by Smith et al [7].…”