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Benign thyroid inclusions within cervical lymph nodes: an alarming incidental finding
The Australian and New Zealand Journal of Surgery
|April 1, 1981
Summary
Microscopic normal thyroid tissue in lymph nodes are benign inclusions, not cancer metastasis. This finding is supported if the thyroid gland is normal and not palpable, and a technetium scan is clear.
Area of Science:
- Pathology
- Surgical Pathology
- Endocrine Pathology
Background:
- Thyroid follicles in cervical lymph nodes are occasionally found during histological examination.
- Distinguishing benign inclusions from metastatic thyroid carcinoma is crucial for patient management.
Observation:
- A case of normal thyroid follicles within a cervical lymph node is presented.
- The lymph node was incidentally removed during branchial cyst excision in a 25-year-old woman.
- The thyroid tissue was microscopically normal and located in the subcapsular region.
Findings:
- The presence of small clusters of histologically normal thyroid follicles in lymph nodes should be considered benign thyroid inclusions.
- These inclusions do not represent metastatic lesions from thyroid carcinoma if the thyroid gland is not palpable and a technetium thyroid scan is normal.
Implications:
- Accurate histological interpretation prevents misdiagnosis of thyroid cancer metastasis.
- Understanding benign thyroid inclusions aids in appropriate clinical decision-making and reduces patient anxiety.
- This finding highlights the importance of correlating histological examination with clinical and imaging data.