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Skip metastases in thyroid cancer leaping the central lymph node compartment
Andreas Machens1, Hans-Jürgen Holzhausen, Henning Dralle
1Department of General, Visceral, and Vascular Surgery, Martin-Luther-University Halle-Wittenberg, Halle, Germany. gensurg@medizin.uni-halle.de
Archives of Surgery (Chicago, Ill. : 1960)
|January 14, 2004
Summary
Skip metastasis in thyroid cancer, characterized by discontinuous nodal spread, is linked to fewer positive lymph nodes and a moderate risk of recurrence. Central lymph node dissection is recommended when lateral spread occurs.
Area of Science:
- Oncology
- Surgical Pathology
- Cancer Research
Background:
- Discontinuous nodal metastasis (skip metastasis) in thyroid cancer presents unique clinicopathologic features.
- Understanding skip metastasis is crucial for accurate prognostic assessment and treatment planning.
Purpose of the Study:
- To investigate the clinicopathologic characteristics and prognostic implications of skip metastasis in various thyroid cancer subtypes.
- To compare skip metastasis with continuous nodal metastasis in terms of patient outcomes.
Main Methods:
- Retrospective analysis of 215 thyroid cancer patients undergoing central lymph node dissection.
- Stratification of clinicopathologic variables based on tumor entity and nodal metastasis type (discontinuous vs. continuous).
Main Results:
- Skip metastases were identified in 19.7% of papillary and 21.3% of medullary thyroid cancers.
- Skip metastasis was associated with significantly fewer positive lymph nodes in both papillary (3.7 vs. 12.9) and medullary (6.0 vs. 17.1) thyroid cancers.
- No other significant clinicopathologic correlations were found for skip metastasis.
Conclusions:
- Skip metastasis represents a low-intensity nodal metastasis pattern in thyroid cancer.
- This pattern carries a moderate risk of local recurrence, warranting consideration for central lymph node compartment clearance when lateral involvement is present.