Mesorectal lymph nodes

Last revised by Daniel J Bell on 26 Dec 2020

Citation, DOI, disclosures and article data

Citation:

Weerakkody Y, Bell D, Mesorectal lymph nodes. Reference article, Radiopaedia.org (Accessed on 20 Apr 2024) https://doi.org/10.53347/rID-85385

DOI:

https://doi.org/10.53347/rID-85385

Permalink:

https://radiopaedia.org/articles/85385

rID:

85385

Article created:

25 Dec 2020, Yuranga Weerakkody ◉

Disclosures:

At the time the article was created Yuranga Weerakkody had no recorded disclosures.

Last revised:

26 Dec 2020, Daniel J Bell ◉

Disclosures:

At the time the article was last revised Daniel J Bell had no recorded disclosures.

Revisions:

2 times, by 2 contributors - see full revision history and disclosures

Systems:

Gastrointestinal, Oncology

Sections:

Anatomy

Synonyms:

Mesorectal lymph nodes refers to lymph nodes that are present in the mesorectal fascia. Their assessment is important in the staging of colorectal tumors such as rectal cancer and anal cancer.

According to one study, the majority of nodes were located in the proximal two-thirds of the posterior rectal mesentery ¹.

They may be characterized on staging MRI scans with ultrasmall particles of iron oxide (USPIO) and T2*-weighted MR imaging ².

uniform and central low-signal intensity patterns are features of nonmalignant nodes
reactive nodes frequently show central low signal intensity at T2*-weighted imaging