53 results
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
Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
Lymphadenitis #Pathology ... #LymphNode #Clinical
Dysmorphic Red Blood Cells on Electron Microscopy
This eyeSCANdy image shows dysmorphic red blood cells from the
ElectronMicroscopy #SEM ... #clinical #pathology
Calcium Oxalate Crystals on Electron Microscopy
Today’s image shows calcium oxalate crystals in a urinary sediment under
ElectronMicroscopy #SEM ... clinical #nephrology #pathology
Central retinal artery occlusion (CRAO). Positive "spot sign" on Ocular Ultrasound

78 yo M with sudden onset
Do you see any pathology
Acute promyelocytic leukemia (blood). Typical morphologic features are bilobed ("butterfly") nuclei with dispersed chromatin, subtle to
I see all of these ... leukemia #APL #APML #Pathology
IgG4-associated conditions

Diagnosis of IgG4 disease is depending on BIOPSY. While IgG4 levels can be informative (and
really need to see ... pathology with ... Even the pathology
Trichodysplasia spinulosa: follicles plugged w/ hyperkeratotic & parakeratotic debris, excessive inner root sheath differentiation towards keratinization.
EM shows intranuclear ... Trichodysplasia #spinulosa #Pathology
Severe Tricuspid Regurgitation demonstrated in the Cephalic Vein

Patient with severe pulmonary hypertension and severe tricuspid regurgitation.
Editor note- see ... effect as seen in pathology