8 results
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
macrophages and T cells ... • Silicosis • Chronic ... Langerhans giant cells ... malignancy, and chronic ... TB #Diagnosis #Management
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
to impaired B-cell ... Autoimmunity • Chronic ... lung disease ... Chest CT: • Ground-glass ... Malignancies • Chronic
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
and Management ... infection • Most common ... pneumonia • Chronic ... CT Lung Abscess ... Clindamycin in case of PCN
Tuberculosis Overview

10 million new M. tuberculosis infections/year
Facultative intracellular rod-shaped bacteria
Multidrug-resistant tuberculosis (MDR-TB) accounts for 4.6% of
macrophages and T cells ... • Silicosis • Chronic ... Langerhans giant cells ... malignancy, and chronic ... TB #Diagnosis #Management
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Diagnosis Framework Disease ... Mycobacterium tuberculosis ... angioinvasive disease ... • CT: Halo sign ... Abdominal pain, chronic
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
Mycobacterium tuberculosis ... lung disease ... encounters due to NTM: Chronic ... Advanced HIV (CD4 cell ... Imaging, high res CT
Squamous-Cell Carcinoma of the Lung- ...Physical examination revealed decreased air entry in the base of the
Squamous-Cell Carcinoma ... A chest radiograph ... indicated stage IV disease ... #NEJM #clinical ... #radiology #CT #
Mycoses

HISTOPLASMOSIS
• Inhalation of conidia → Yeast → travel to lymph nodes → spread in body
• Bird
droppings • Most common ... change in the lungs ... becomes a yeast cell ... nails, bronchi, lungs ... Fungal #Diagnosis #Management