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Secondary malignant lymphoma which simulated primary thyroid cancer
S Takashima1, F Takayama, M Momose
1Department of Radiology, Shinshu University School of Medicine, 3-1-1 Asahi, 390-8621, Matsumoto, Japan. shodayu@gipac.shinshu-u.ac.jp
Clinical Imaging
|January 11, 2001
Summary
A patient presented with a neck mass and secondary thyroid lymphoma. Imaging revealed multiple thyroid nodules, but the residual thyroid gland appeared normal, suggesting secondary involvement.
Area of Science:
- Oncology
- Radiology
- Endocrinology
Background:
- Secondary thyroid lymphoma is rare and often presents insidiously.
- Distinguishing secondary thyroid lymphoma from primary thyroid lymphoma or other thyroid pathologies can be challenging.
Observation:
- A patient with a neck mass was found to have multiple thyroid nodules.
- Imaging studies including ultrasonography (US), computed tomography (CT), and gallium-67 scintigraphy showed characteristic findings of lymphoma within the thyroid gland.
- Notably, the residual thyroid gland appeared normal on imaging.
Findings:
- Histopathological examination confirmed secondary thyroid lymphoma with cervical lymph node metastasis.
- The absence of concurrent Hashimoto's thyroiditis was confirmed.
- The case highlights the diagnostic utility of imaging in identifying secondary thyroid lymphoma.
Implications:
- Normal-appearing residual thyroid gland on imaging may indicate secondary thyroid lymphoma.
- This finding can aid in differentiating secondary thyroid lymphoma from primary thyroid malignancies.
- Further research into the specific imaging characteristics of secondary thyroid lymphoma is warranted.