15 results
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
toxo IgG • CNS PCR ... Syphilis • Pyogenic Abscess ... Lesions #Brain #differential ... #diagnosis #causes ... #radiology #neurology
Pulmonary Renal Syndrome

Definition: Diffuse alveolar hemorrhage + Glomerulonephritis
Presentation (Pulmonary and renal manifestations can occur weeks apart):
Diagnosis for Pulmonary ... allopurinol), Infection ... anti-ANCA ab, anti-GBM ... resolution chest CT ... #diagnosis #nephrology
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
HIV / AIDS - Differential ... should be based on clinical ... Inferomedial temporal lobes ... tuberculomas, or abscesses ... enhancement on CT
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Lung Abscess - Diagnosis ... polymicrobial infection ... Lung Abscess - Clinical ... Differential Diagnosis ... #pulmonary #differential
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
emboli • Lung abscess ... Progression: • Upper lobe ... characteristic features Clinical ... Tuberculosis Diagnosis ... staining, NAA (PCR
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
of right middle lobe ... Disease: Clinical ... Lung Disease: • Clinical ... Imaging, high res CT ... #differential #
Weakness - Differential Diagnosis Framework

Approach To Weakness:
 • Non-neuromuscular disorder (Cardiac, pulmonary etc)
 • CNS ->
Weakness - Differential ... Diagnosis Framework ... disorder (Cardiac, pulmonary ... : Brain abscess ... #Diagnosis #neurology
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
emboli • Lung abscess ... Progression: • Upper lobe ... characteristic features Clinical ... Tuberculosis Diagnosis ... staining, NAA (PCR
Mycoses

HISTOPLASMOSIS
• Inhalation of conidia → Yeast → travel to lymph nodes → spread in body
• Bird
has five major clinical ... fungal stain of clinical ... transplantation • MCC ... Sinusitis • Brain abscess ... : • Serology for
CNS Infections - Viral Encephalitis and Bacterial Meningitis - Differential Diagnosis Framework

Viral Encephalitis:
MCC: Enteroviruses (e.g., coxsackievirus
CNS Infections - ... virus • CMV • EBV ... • Common clinical ... rav7ks #CNS #Infections ... diagnosis #neurology