Thyroid gland

FNA of papillary thyroid carcinoma
21 September 2016

FNA of papillary thyroid carcinoma https://twitter.com/MayoClinicPath/status/778223538855677953 https://twitter.com/SriGK/status/880645751331840002
thyroid Bethesda category 6
23 August 2016

See also
thyroid FNA
Open references
The Bethesda System for Reporting Thyroid Cytopathology: Interpretation and Guidelines in Surgical Treatment. Renuka IV et al., 2012. (Open access) http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3477437/
thyroid Bethesda category 5
23 August 2016

See also
thyroid FNA
Open references
The Bethesda System for Reporting Thyroid Cytopathology: Interpretation and Guidelines in Surgical Treatment. Renuka IV et al., 2012. (Open access) http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3477437/
thyroid Bethesda category 1
23 August 2016

See also
thyroid FNA
Open references
The Bethesda System for Reporting Thyroid Cytopathology: Interpretation and Guidelines in Surgical Treatment. Renuka IV et al., 2012. (Open access) http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3477437/
thyroid Bethesda category 2
23 August 2016

This category includes benign follicular nodule (adenomatoid nodule, colloid nodule), lymphocytic (Hashimotos) thyroiditis and granulomatous (subacute) thyroiditis.
The benefit of thyroid FNA in these cases is when a reliably benign interpretation is done it avoids unnecessary surgery.
The term "benign follicular nodule" is applied to the most common benign pattern; where an adequate specimen is composed of varying proportion of colloid and benign follicular cells arranged as macro (...)
thyroid Bethesda category 3
23 August 2016

Thyroid FNAs that do not fit into benign, suspicious or malignant categories are included here.
AUS/FLUS is reserved for specimens that contain cells (follicular, lymphoid) with architectural atypia that isn’t sufficient to be classified as suspicious for a follicular neoplasm (FN) or malignancy and on the other hand atypia is more marked than benign change.
According to TBSRTC, AUS/FLUS is a category of resort and should not be used indiscriminately.
In a study, only 1.95% were of this (...)
thyroid Bethesda category 4
19 August 2016

Thyroid Bethesda class IV
Images
Predominantly microfollicular smear in thyroid FNA w no colloid. Bethesda Category IV. Class 4.
https://twitter.com/edusqo/status/764141628890181632
The aim of Bethesda category 4 is to identify a nodule that might be a follicular carcinoma. Follicular carcinomas have cytomorphologic features that distinguish them from benign follicular nodules but do not permit distinction from a follicular adenoma (FA).
They are reportable as FN or SFN. About 15–30% (...)
Hurthle cell metaplasia
9 August 2016

Hurthle cell metaplasia; Hurthle cell modifications
Etiology
thyroid congenital anomalies thyroglossal duct cyst
thyroid inflammation thyroid inflammatory foci Hashimoto thyroiditis
thyroid compensatory regenerative nodules
thyroid hyperplasia
thyroid neoplasia / thyroid tumors follicular epithelial cell neoplasms Benign: follicular adenoma Malignant Differentiated: papillary, follicular Poorly differentiated (insular) Anaplastic parafollicular epithelial neoplasms (...)
thyroid anomalies
9 August 2016

Types
thyroid infiltration thyroid histiocytic infiltration thyroid lymphoid infiltration
thyroid fusiform cell anomalies
thyroid fibrous anomalies thyroid fibrosis
thyroid cystic anomalies / thyroid cysts
thyroid abnormal cellular population thyroid clear cell anomalies thyroid oncocytic anomalies thyroid solid anomalies thyroid trabecular anomalies
See also
thyroid (...)
thyroid lymphoid infiltrate
9 August 2016

Types
thyroid typical lymphoid infiltrate Hashimoto thyroiditis
thyroid atypical lymphoid infiltrate thyroid lymphomas
Examples
Hashimoto Thyroiditis : Mononuclear inflammatory infiltrate https://twitter.com/Dr_Shiva_MD/status/762688613440102400
See also
thyroid anomalies

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E. Pathology by systems