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Size of metastatic lymph nodes
L Uriev1, I Maslovsky, F Barak
1Institute of Pathology, Barzilai Medical Centre, 7830604 Ashkelon, Israel.
Case Reports in Pathology
|May 11, 2013
Summary
Small lymph nodes in sigmoid adenocarcinoma can harbor metastases, challenging the assumption that larger nodes are more likely to be affected. Clinicians and pathologists should pay close attention to these small nodes during evaluation.
Area of Science:
- Oncology
- Gastrointestinal Pathology
Background:
- Sigmoid adenocarcinoma is a common gastrointestinal malignancy.
- Pericolic lymph node metastasis is a critical prognostic factor in colorectal cancer staging.
- The size of lymph nodes is often considered in assessing metastatic potential.
Purpose of the Study:
- To present a case of well-differentiated sigmoid adenocarcinoma with extensive small lymph node metastases.
- To review the literature regarding the correlation between lymph node size and metastasis in sigmoid adenocarcinoma.
- To emphasize the clinical and pathological significance of small lymph node involvement.
Main Methods:
- Case presentation of sigmoid adenocarcinoma.
- Literature review focusing on studies examining lymph node metastasis in sigmoid adenocarcinoma.
- Analysis of lymph node characteristics, specifically size, in relation to metastatic status.
Main Results:
- The presented case demonstrated numerous small pericolic lymph nodes with metastases.
- Literature review indicated no clear correlation between lymph node size and the presence of metastasis.
- Small lymph nodes were found to be frequently positive for metastatic disease.
Conclusions:
- Lymph node size is an unreliable indicator for predicting metastasis in sigmoid adenocarcinoma.
- Small lymph nodes require meticulous examination by clinicians and pathologists due to their potential for harboring metastases.
- Rethinking diagnostic criteria for lymph node assessment in sigmoid adenocarcinoma may be warranted.
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