See also: Thyroid nodules
Epi
The most common thyroid malignancy.
Sx
Characterized by slow, infiltrative local spread affecting other parts of the thyroid gland and regional lymph nodes.
Histo
Local lymph node involvement
Psammoma bodies are characteristic
Hurthle cells seen in both
Papillary thyroid cancer
Follicular thyroid cancer
Dx
FNAB typically reveals
Large cells with ground glass cytoplasm
Pale nuclei with inclusion bodies and central grooving
PTC is unencapsulated (in contast to follicular thyroid cancer, which encapsulated)
Prognosis
Excellent, even in the presence of metastasis