39 results
Cavitary Lung Disease - Differential Diagnosis and Workup Algorithm
Acute / Subacute:
 • Acute Infections: Lung abscess,
- Differential ... Emboli, Fungal Infection ... ): • Chronic Infections ... , NTB, Fungal, Parasitic ... lesion #pulmonary #differential
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
Pulmonary Infections ... spp, Atypical infection ... Penicillium marneffei Parasitic ... failure, COPD, Lung ... diagnosis #evaluation #differential
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
lesions • 80% with lung ... splenomegaly Other infections ... multiple lesions Infectious ... • Nocardia • Parasitic ... Lesions #Brain #differential
Echinococcus Life Cycle
1) Adult in small intestine eggs
2) Embryonated egg in feces
3) Oncosphere hatches; penetrates intestinal
commonly liver and lung ... LifeCycle #diagnosis #pathophysiology ... infectiousdiseases #cdc ... #parasite
Causes of Antibiotic Failure - Differential Diagnosis Framework
Diagnosis:
 • Non-Infectious: Malignant, Autoimmune, Drug-related (NMS, serotonin syndrome,
Antibiotic Failure - Differential ... Diagnosis: • Non-Infectious ... Viral, Fungal, Parasite ... (daptomycin in lungs ... Antibiotic #Failure #Differential
CNS Ring-Enhancing Lesions - Differential Diagnosis
 • Infections: Cerebral abscess (bacterial, fungal, parasitic), Neurocysticercosis, Tuberculoma, Cerebral
Ring-Enhancing Lesions - Differential ... Diagnosis • Infections ... bacterial, fungal, parasitic ... Malignancy: Metastases (lung ... Enhancing #Lesions #Differential
Cysticercosis - Taenia solium Life Cycle
1) Eggs or gravid proglottids in feces and passed into environment.
2)
cysticerci. 5) Humans ... intestinal tapeworm infection ... LifeCycle #diagnosis #pathophysiology ... infectiousdiseases #cdc ... #parasite
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
polymicrobial infection ... Abscess Pathophysiology ... Diagnosis: • CBC ... Coccidioides • Parasite ... Abscess Differential
Miliary Pattern - Chest Radiology
 • Miliary opacities are scattered, small (1 -4 mm) nodules
 •
throughout the lungs ... inhalational injury Differential ... Opacities: • Infectious ... Nocardia, zoonotic infections ... - Disseminated Parasites
Lung Nodule - Differential Diagnosis Algorithm
Nodule on > 2 Years Without a Change in Size:
 •
Lung Nodule - Differential ... Breast, Testicle) Infection ... Septic Embolism • Parasitic ... Malformation #Lung ... #Nodule #Differential