Pathnologic @pathnologic
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Path Geek - All things #pathology
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Herpes Simplex Virus 
Lymphadenitis 
 • Expanded paracortex 
 • HSV-infected cells are 
present in areas
Herpes Simplex Virus ... DennisOMalleyMD) #Herpes #Simplex ... Lymphadenitis #HSV #Pathology ... #Microscopy #Clinical ... #LymphNode
Here are very large, immature myeloblasts with many nucleoli. A distincitve feature of these blasts is
myelogenous leukemia (AML ... #Clinical #Path ... #Blood #Smear #Microscopy ... Rods #AuerRods #AML
A 37-year-old woman initially presented with pancytopenia and found to have leukopenia (2.1 × 103/μL) with
In addition to APL ... myeloid leukemia (AML ... ) t(8;21), AML with ... #Clinical #Path ... #Blood #Smear #Microscopy
Here is a lymph node that is lymphoid-depleted, fibrotic, and burned-out, typical of late phase HIV
Lymphadenitis #PatternC #Pathology ... #Microscopy #LymphNode
Prolymphocytes

In our case, the patient has T-prolymphocytic leukemia (T-PLL) not Acute Myeloid Leukemia (AML).  🔬Tumor
Myeloid Leukemia (AML ... Smear #Peripheral #Pathology ... #Microscopy #Clinical
Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
Lymphadenitis #Pathology ... #LymphNode #Clinical ... #Microscopy
Signet ring cell histiocytes in lymph node sinuses! This can mimic metastatic adenocarcinoma. Histiocytes have ingested
#Histiocytes #LymphNode ... #Pathology #Clinical ... #Microscopy
Here is a lymph node with florid follicular hyperplasia typical of HIV lymphadenitis (so-called "pattern A",
Lymphadenitis #PatternA #Pathology ... #Microscopy #LymphNode
Aldosteronoma — Spironolactone Bodies 

1. Spironolactone is often used to treat hypertension caused by hyperaldosteronism, and
study by Patel et al ... gland (Patel et al ... Spironolactone #Bodies #Pathology ... Clinical #Gross #Microscopy
Sarcoid in the Thyroid - Pathology

Not all thyroid granulomas are subacute thyroiditis- this is sarcoidosis! Can
the Thyroid - Pathology ... Not all thyroid ... Granuloma #Thyroid #Pathology ... #Microscopy #Clinical