Pathnologic @pathnologic
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Path Geek - All things #pathology
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Diffuse Sclerosis Variant—PTC 
 - Rare variant of PTC 
 - Approximately 3% ofall PTC
Diffuse Sclerosis ... Rare variant of ... PTC #Papillary #Thyroid ... Pathology #Clinical #Gross ... #Microscopy
Herpes Simplex Virus 
Lymphadenitis 
 • Expanded paracortex 
 • HSV-infected cells are 
present in areas
• HSV-infected cells ... present in areas of ... HSV #Pathology #Microscopy ... #Clinical #LymphNode
Here are the morphological hallmarks of Rhabdomyosarcoma.

 - Broken arrow sign 

 - tad-pole rhabdomyoblasts
morphological hallmarks of ... rhabdomyoblasts - Wraith cells ... - Cross striations ... Hallmarks #Pathology #Microscopy
The many faces of the Hodgkin/Reed-Sternberg (HRS) cell: Even as medical students we are aware of
The many faces of ... Reed-Sternberg cell ... (RS cell). ... Many variants exist ... Pathology #Clinical #Microscopy
Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
fibrosis (A) and well-formed ... seen within giant cells ... wheel-like appearance of ... Lymphadenitis #Pathology #LymphNode ... #Clinical #Microscopy
Hobnail variant of PTC: micropapillary architecture, dense eosinophilic cytoplasm, hobnail cells with apical nuclei, and marked
Hobnail variant ... of PTC: micropapillary ... cytoplasm, hobnail cells ... PTC #Papillary #Thyroid ... Pathology #Clinical #Microscopy
Oncocytic Variant of Medullary Carcinoma
Don't assume every oncocytic thyroid tumor is a Hurthle cell neoplasm! Nested
Oncocytic Variant ... of Medullary Carcinoma ... every oncocytic thyroid ... tumor is a Hurthle cell ... Carcinoma #Pathology #Microscopy
Signet ring cell histiocytes in lymph node sinuses! This can mimic metastatic adenocarcinoma. Histiocytes have ingested
Signet ring cell ... in the setting of ... #SignetRing #Cell ... #Histiocytes #LymphNode ... Pathology #Clinical #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
Aldosteronoma — Spironolactone Bodies 

1. Spironolactone is often used to treat hypertension caused by hyperaldosteronism, and
identified in 33% of ... Red blood cells ... endoplasmic reticulum in cells ... Pathology #Clinical #Gross ... #Microscopy