35 results
Cervical Lymphadenopathy - Lymph Node Drainage
Preauricular nodes - Drain scalp, skin
 • Differential diagnosis: Scalp infections,
scalp, skin • ... head and neck squamous ... cell carcinomas ... Malignancies: Squamous ... cell carcinoma
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
• 80% with lung ... , may also see skin ... Infectious: ... #Brain #differential ... #diagnosis #causes
Ulcerative Blastomycosis Skin Lesion
57 asymptomatic M from Indiana nonpruritic, painless, progressive skin lesion lower back x
Blastomycosis Skin ... heaped up borders); differential ... : basal cell ca, ... squamous cell ca ... Indiana University Infectious
Rapidly Growing Mycobacterial Infections

 • Mycobacterium abscessus - Is the most pathogenic and the most likely
most likely to cause ... with underlying lung ... Primary skin and ... Mycobacterium #diagnosis #differential ... #infectiousdiseases
Skin Ulcers by Etiology - Differential Diagnosis Algorithm
Physical:
 • Trauma
 • Pressure
 • Radiation
Vascular:
 • Arterial
Skin Ulcers by Etiology ... - Differential ... Neoplastic: • Squamous ... Cryoglobulinemia Infectious ... Diagnosis #Algorithm #causes
Genital Lesions - Differential Diagnosis Algorithm
Elevated - Vesicles:
 • Herpes simplex
Elevated - Papules / Plaques -
Genital Lesions ... - Differential Diagnosis ... Malignant: • Squamous ... cell carcinoma ... Diagnosis #Algorithm #causes
Causes of Culture Negative Abscess - Differential Diagnosis Framework
Consider prior antibiotics as a cause of a
Causes of Culture ... antibiotics as a cause ... negative culture Brain ... Toxoplasmosis, Entamoeba Skin ... #Diagnosis #InfectiousDiseases
Concurrent Brain and Lung Lesions
 • Bacteria: Nocardia spp, Strep anginosus, Staph aureus, Klebsiella pneumoniae (hypervirulent),
and Lung Lesions ... #Lung #Infections ... #Concurrent #Differential ... #Diagnosis #causes ... #infectiousdiseases
Concurrent Brain and Lung Lesions
 • Bacteria: Nocardia spp, Strep anginosus, Staph aureus, Klebsiella pneumoniae (hypervirulent),
and Lung Lesions ... #Lung #Infections ... #Concurrent #Differential ... #Diagnosis #causes ... #infectiousdiseases
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
to have a "wood-grain ... cancers, including lung ... classic targetoid lesions ... PrathitKulkarni #Erythemas #comparison ... #table #differential