Pathnologic @pathnologic
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Hobnail variant of PTC: micropapillary architecture, dense eosinophilic cytoplasm, hobnail cells with apical nuclei, and marked
Hobnail variant ... of PTC: micropapillary ... cytoplasm, hobnail cells ... #Papillary #Thyroid ... Pathology #Clinical #Microscopy
Diffuse Sclerosis Variant—PTC 
 - Rare variant of PTC 
 - Approximately 3% ofall PTC
Diffuse Sclerosis Variant—PTC ... • Carcinoma cells ... around the tumor cells ... #Thyroid #Cancer ... Clinical #Gross #Microscopy
Pity this Giant Pronormoblast from an elderly pt w pure red cell aplasia. In the proper
from an elderly pt ... w pure red cell ... aplasia. ... Pure #RedCell #Aplasia ... Pathology #Smear #Microscopy
The many faces of the Hodgkin/Reed-Sternberg (HRS) cell: Even as medical students we are aware of
Reed-Sternberg (HRS) cell ... Reed-Sternberg cell ... (RS cell). ... Many variants exist ... Pathology #Clinical #Microscopy
Oncocytic Variant of Medullary Carcinoma
Don't assume every oncocytic thyroid tumor is a Hurthle cell neoplasm! Nested
Oncocytic Variant ... every oncocytic thyroid ... tumor is a Hurthle cell ... for oncocytic variant ... Carcinoma #Pathology #Microscopy
Amiodarone induced thyroid changes

Histopath: Remarkably enlarged follicles, distended with colloid, without 
scalloping, and lined by flattened
Amiodarone induced thyroid ... flattened follicular cells ... change, Follicular cells ... #Amiodarone #thyroid ... Pathology #Clinical #Microscopy
A morphologic mosaic of NUT carcinoma: monotonous primitive cells, basophilic to clear cytoplasm, abrupt keratinization, prominent
monotonous primitive cells ... -NUT fusion or variants ... Pathology #Clinical #Microscopy
Salivary acinic cell carcinoma is usually an H&E diagnosis for me- but this zymogen-granule poor variant
Salivary acinic cell ... zymogen-granule poor variant ... Salivary #Acinic #Cell ... Carcinoma #Pathology #Microscopy
Neoplastic plasma cells with nucleoli (left image) and intranuclear Dutcher body (right image).

Dutcher bodies are round,
Neoplastic plasma ... cells with nucleoli ... Clinical #Smear #Microscopy
Eosinophilic angiocentric fibrosis: IgG4-related disease of the upper aerodigestive tract. Distinctive concentric (onion-skin) perivascular fibrosis and
Usually >50 IgG4+ plasma ... cells/HPF, IgG4 ... Pathology #Clinical #Microscopy