thyroid follicular carcinoma
Clinical synopsis
Mainly adults / rare in children
Thyroidal mass lesion
Morphological synopsis
Mass lesion within thyroid
Usually solid
Encapsulated or infiltrating
Vascular and lymphatic spread
Follicular architecture
No characteristic nuclei of papillary carcinoma
- Nuclei usually round / ovoid and bland
- nuclear atypia does not necessarily relate to aggressive behavior
Variants
Minimally invasive and widely invasive
- depending on extent of
- capsular invasion
- vascular invasion (beyond capsule)
oncocytic thyroid follicular carcinoma
clear cell thyroid follicular carcinoma
Immunohistochemical staining
Cytokeratin+
Thyroglobulin+
TTF-1+
Ck19+
Bcl2+
Beta catenin+
Chromogranin−
See also
thyroid carcinomas
- thyroid follicular carcinoma
- thyroid poorly differentiated carcinoma
- thyroid anaplastic carcinoma
- thyroid squamous carcinoma
- thyroid mucoepidermoid carcinoma
- thyroid mucinous carcinoma