Pathnologic @pathnologic
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Path Geek - All things #pathology
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Here are very large, immature myeloblasts with many nucleoli. A distincitve feature of these blasts is
a linear red "Auer ... #Clinical #Path ... #Blood #Smear #Microscopy ... #Auer #Rods #AuerRods ... #AML
A 37-year-old woman initially presented with pancytopenia and found to have leukopenia (2.1 × 103/μL) with
with occasional Auer ... consistent with Auer ... #Clinical #Path ... #Blood #Smear #Microscopy ... #Auer #Rods #AuerRods
Acute promyelocytic leukemia (blood). Typical morphologic features are bilobed ("butterfly") nuclei with dispersed chromatin, subtle to
granules, and Auer ... I see all of these ... KyleBradleyMD #Auer ... promyelocytic #leukemia #APL ... #APML #Pathology
Herpes Simplex Virus 
Lymphadenitis 
 • Expanded paracortex 
 • HSV-infected cells are 
present in areas
Lymphadenitis #HSV #Pathology ... #Microscopy #Clinical ... #LymphNode
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