20 results
Streptococcal Toxic Shock Syndrome (STSS)
Complication of invasive GAS disease characterized by shock & MOF → occurs
of invasive GAS disease ... GAS in 30% of cases ... kidneys, liver, lung ... /ARDS, coagulopathy ... day 2 + 3 BIDMC Infectious
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
• Chronic lung ... Chest CT: • Ground-glass ... DDX - Other causes ... : • Nephrotic syndrome ... (Epstein-Barr syndrome
Causes of Intestinal Obstruction - Differential Diagnosis
Lesions Extrinsic to the Intestinal Wall:
 • Adhesions: Postoperative, Congenital,
Congenital: Annular pancreas ... mesenteric artery syndrome ... Inflammatory: Crohn's disease ... Eosinophilic granuloma • Infections ... #gastroenterology
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Lung Abscess - Diagnosis ... polymicrobial infection ... • Most common cause ... seen • Chest CT ... #differential #causes
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
• Mounier-Kuhn syndrome ... in the adjacent lung ... of the affected lung ... high-resolution chest CT ... mycobacteria Treatment
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
status NTM Cause ... Lady Windermere Syndrome ... : • Syndrome of ... Lung Disease: ... Imaging, high res CT
Chronic Pancreatitis

Definition: A pathologic fibroinflammatory syndrome of the pancreas in individuals with genetic, environmental, and/or other
fibroinflammatory syndrome ... of the pancreas ... • 1st line: CT ... #management #gastroenterology ... #treatment
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
Lung Infections ... Framework Disease ... • CT: Halo sign ... factor • May cause ... #AIDS #pulmonary
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
Other tests: • CT ... confirm DAH, r/o infection ... Goodpasture's cause ... sparing of the lung ... #management #treatment
CNS Infection in HIV / AIDS - Differential Diagnosis Framework

Principles of HIV-Associated CNS Opportunistic Infections:
 •
HIV / AIDS - Differential ... Antimicrobial treatment ... enhancement on CT ... Demyelinating disease ... caused by the JC