Pathnologic @pathnologic
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Comparison of basophils and mast cells (in bone marrow).

#Basophils #MastCells #Pathology #Marrow #Smear #Microscopy #Comparison #Table
Comparison of basophils ... and mast cells ... (in bone marrow) ... #Smear #Microscopy ... #Comparison #Table
Here is a lymph node that is lymphoid-depleted, fibrotic, and burned-out, typical of late phase HIV
KyleBradleyMD "Pattern ... infection) - "Pattern ... phase between pattern ... #Pathology #Microscopy ... #LymphNode #Clinical
Herpes Simplex Virus 
Lymphadenitis 
 • Expanded paracortex 
 • HSV-infected cells are 
present in areas
• HSV-infected cells ... HSV #Pathology #Microscopy ... #Clinical #LymphNode
Here is a lymph node with florid follicular hyperplasia typical of HIV lymphadenitis (so-called "pattern A",
KyleBradleyMD "Pattern ... Warthin-Finkeldey type giant cells ... Monocytoid B cells ... #Pathology #Microscopy ... #LymphNode #Clinical
Here are the morphological hallmarks of Rhabdomyosarcoma.

 - Broken arrow sign 

 - tad-pole rhabdomyoblasts
- Broken arrow ... rhabdomyoblasts - Wraith cells ... Hallmarks #Pathology #Microscopy
Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
Yeast forms (arrows ... seen within giant cells ... Lymphadenitis #Pathology #LymphNode ... #Clinical #Microscopy
Peripheral blood findings in microangiopathic hemolytic anemia.  DIC is a clinical and laboratory diagnosis, not
spherocytes (blue arrow ... non-specific red cell ... polychromatophilic cells ... (black arrow) ... Pathology #Smear #Microscopy
Tinea Versicolor - Physical examination revealed large, coalescing, hypopigmented patches and macules on her torso and
melanocytes (Panel B, arrows ... and meatball” pattern ... epidermis (Panel C, arrow ... TineaVersicolor #Rash #Microscopy
Signet ring cell histiocytes in lymph node sinuses! This can mimic metastatic adenocarcinoma. Histiocytes have ingested
Signet ring cell ... #SignetRing #Cell ... #Histiocytes #LymphNode ... Pathology #Clinical #Microscopy
Rhabdoid Cells versus Rhabdomyoblastic Cells

Rhabdoid Cells:

• Prominent nucleolus 

• Paranuclear inclusions 

• Pleomorphism Ø 

• CK/EMA
Rhabdoid Cells versus ... Rhabdomyoblastic Cells ... Rhabdoid Cells ... Rhabdomyoblastic #Comparison ... #Pathology #Microscopy