Differential Diagnosis for Thy3f Cytology on Final Histology
Single Most Likely Diagnosis
- Follicular Neoplasm: This is the most likely diagnosis for a Thy3f cytology, as it indicates a follicular patterned lesion with some atypia, which is consistent with a follicular neoplasm, either adenoma or carcinoma.
Other Likely Diagnoses
- Follicular Adenoma: A benign tumor of the thyroid gland, which can have a similar cytological appearance to follicular carcinoma, but lacks capsular or vascular invasion.
- Follicular Carcinoma: A malignant tumor of the thyroid gland, which can have a similar cytological appearance to follicular adenoma, but with capsular or vascular invasion.
- Hürthle Cell Neoplasm: A type of follicular neoplasm with oncocytic cells, which can have a similar cytological appearance to follicular neoplasms.
Do Not Miss Diagnoses
- Papillary Thyroid Carcinoma with Follicular Variant: Although less likely, this diagnosis is crucial to consider, as it is a malignant tumor with a different treatment approach than follicular neoplasms.
- Medullary Thyroid Carcinoma: A rare malignant tumor of the thyroid gland, which can have a variable cytological appearance, including a follicular pattern.
Rare Diagnoses
- Poorly Differentiated Thyroid Carcinoma: A rare and aggressive malignant tumor of the thyroid gland, which can have a variable cytological appearance, including a follicular pattern.
- Anaplastic Thyroid Carcinoma: A rare and highly aggressive malignant tumor of the thyroid gland, which can have a variable cytological appearance, including a follicular pattern.
- Metastatic Carcinoma to the Thyroid: A rare condition where a malignant tumor from another site metastasizes to the thyroid gland, which can have a variable cytological appearance, including a follicular pattern.