16 results
Herpes Simplex Virus 
Lymphadenitis 
 • Expanded paracortex 
 • HSV-infected cells are 
present in areas
Simplex Virus Lymphadenitis ... Simplex #Virus #Lymphadenitis
Here is a lymph node that is lymphoid-depleted, fibrotic, and burned-out, typical of late phase HIV
late phase HIV lymphadenitis ... Pattern C" in HIV Lymphadenitis ... pattern C #HIV #Lymphadenitis
Paracoccidioides brasiliensis Lymphadenitis: 

Paracoccidioidomycosis is a systemic fungal infection rare in the US, but endemic in
Paracoccidioides brasiliensis Lymphadenitis ... #brasiliensis #Lymphadenitis
Suppurative Lymphadenitis on Neck POCUS

Male with left neck mass/swelling/overlying redness.  Prior hx of MRSA.
Suppurative Lymphadenitis ... Answer: Suppurative lymphadenitis ... #Suppurative #Lymphadenitis
Here is a lymph node with florid follicular hyperplasia typical of HIV lymphadenitis (so-called "pattern A",
typical of HIV lymphadenitis ... Pattern A" in HIV Lymphadenitis ... HIV #EarlyPhase #Lymphadenitis
Suppurative Lymphadenitis on Neck POCUS with Color Doppler

Male with left neck mass/swelling/overlying redness.  Prior hx
Suppurative Lymphadenitis ... Answer: Suppurative lymphadenitis ... #Suppurative #Lymphadenitis
Chancroid with Bubo on Doppler POCUS

College-age male with right groin pain/swelling.  Simple abscess? 
Right groin
US-lymphadenitis ... #Bubo #POCUS #Lymphadenitis
Nontuberculous Mycobacteria
RAPID GROWERS: 
 • Mycobacterium abscessus, chelonae, fortuitum
SLOW GROWERS: 
 • Mycobacterium avium complex, marinum,
chelonae SUPERFICIAL LYMPHADENITIS
Infectious Joint Pain - Differential Diagnosis Algorithm 
Polyarticular Join Pain
 • Viral Myalgia
 • Viral Arthritis
Osteomyelitis • Lymphadenitis
Neck Mass - Differential Diagnosis Algorithm
Congenital Neck Mass:
 • Thyroglossal Duct Cyst
 • Branchial Cleft Anomalies
Inflammatory Lymphadenitis