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Mesenteric lymph nodes seen at imaging: causes and significance
Brian C Lucey1, Joshua W Stuhlfaut, Jorge A Soto
1Department of Radiology, Boston Medical Center, 88 E Newton St, Atrium 2, Boston, MA 02118, USA. brian.lucey@bmc.org <brian.lucey@bmc.org>
Insights
Multidetector computed tomography now allows reliable noninvasive identification of normal mesenteric lymph nodes. Recognizing mesenteric lymphadenopathy is crucial for staging cancer and diagnosing abdominal pain from inflammatory or infectious causes.
Area of Science:
- Radiology
- Gastroenterology
- Oncology
Background:
- Multidetector computed tomography (MDCT) enables routine evaluation of mesenteric lymph nodes.
- Increasing cross-sectional imaging leads to more frequent detection of mesenteric lymph nodes, often unexpectedly.
- While normal nodes can now be identified, mesenteric lymphadenopathy has numerous potential causes.
Purpose of the Study:
- To highlight the significance of mesenteric lymphadenopathy detection via MDCT.
- To emphasize the diagnostic and prognostic implications of mesenteric lymphadenopathy.
- To discuss the diverse etiologies of mesenteric lymphadenopathy.
Main Methods:
- Review of findings from multidetector computed tomography examinations.
- Analysis of the clinical significance of identified mesenteric lymph nodes.
- Correlation of lymph node characteristics with underlying disease processes.
Main Results:
- MDCT allows for reliable noninvasive identification of normal mesenteric lymph nodes.
- Mesenteric lymphadenopathy is frequently detected and can indicate neoplastic, inflammatory, or infectious conditions.
- The distribution of lymphadenopathy can suggest the underlying pathology.
Conclusions:
- Mesenteric lymphadenopathy detection impacts cancer staging and patient management.
- It can be a key indicator of abdominal pain causes, including inflammatory and infectious diseases.
- Understanding the patterns of mesenteric lymphadenopathy aids in accurate diagnosis and treatment.
Abstract:
With the advent of multidetector computed tomography, routine evaluation of mesenteric lymph nodes is now possible. For the first time, normal mesenteric nodes may be reliably identified noninvasively. Because of the increasing volume of cross-sectional imaging examinations being performed, lymph nodes in the mesentery are being detected with increasing frequency. This is often an unsuspected finding. Although the detected lymph nodes may be normal, there is a large number of disease processes that may lead to mesenteric lymphadenopathy. The most common causes of mesenteric lymphadenopathy are neoplastic, inflammatory, and infectious processes. Many of these causes may also result in lymphadenopathy elsewhere in the body. It is important to recognize mesenteric lymphadenopathy in patients with a history of a primary carcinoma because the lymphadenopathy affects the staging of the disease, which in turn will affect further management. In addition, mesenteric lymphadenopathy may be the only indicator of an underlying inflammatory or infectious process causing abdominal pain. The distribution of the lymph nodes may indicate the exact nature of the underlying disease process, and the correct treatment may then be instituted. Besides neoplastic, inflammatory, and infectious processes, many other disease processes may occasionally result in mesenteric lymphadenopathy.
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