Journal: Medicina
Article Title: Immunohistochemistry Helps to Distinguish Noninvasive Follicular Thyroid Neoplasm with Papillary-like Nuclear Features/Noninvasive Encapsulated Follicular Variant of Papillary Thyroid Carcinoma with Other Follicular Thyroid Lesions
doi: 10.3390/medicina57111246
Figure Lengend Snippet: Representative microscopic findings for expression of the seven markers in benign follicular nodules and noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP). ( a ) Hematoxylin–eosin (HE) stain for a Hürthle cell adenoma; ( b ) CD56 showed diffuse and complete membrane staining; ( c ) CK (cytokeratin) 19 and ( d ) HBME-1 showed no expression; ( e ) galectin-3 showed focal cytoplasmic staining; ( f ) CITED1 showed diffuse cytoplasmic and nuclear staining; ( g ) VE1 showed negative staining; ( h ) TROP-2 showed focal staining, but the majority of follicular adenomas showed negative staining; ( i ) HE stain for a NIFTP; ( j ) CD56 showed diffuse staining; ( k ) CK19 showed diffuse staining; ( l ) HBME-1 showed negative staining in this case but more than half of the NIFTPs showed positive results; ( m ) galectin-3 showed negative staining; ( n ) CITED1 showed focal cytoplasmic and nuclear staining in this case, consistent with a negative result. Most NIFTP cases, however, showed positive results; ( o ) VE1 and ( p ) TROP-2 showed no expression (original magnification, 200×).
Article Snippet: The following primary monoclonal antibodies were used: CD56 antibody (clone RCD56; Zytomed, Berlin, Germany), CK19 antibody (clone B170; Leica, Newcastle, UK), HBME-1 antibody (clone HBME-1; Genemed, South San Francisco, CA, USA), galectin-3 antibody (clone 9C4; Leica, Bannockburn, IL, USA), CITED1 (clone CITED-1; Abcam, Cambridge, UK), TROP-2 antibody (clone F-5; Santa Cruz Biotechnology, Dallas, TX, USA), and anti- BRAF V600E (VE1) antibody (clone VE1; Spring Bioscience, Pleasanton, CA, USA).
Techniques: Expressing, H&E Stain, Membrane, Staining, Negative Staining