12 results
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
Dermatologic Manifestations ... with Polyangiitis ... GPA causes disease ... vasculitis #Dermatologic ... GPA #dermatology
Interstitial Lung Diseases (ILD)
Exposure-Related ILD (a.k.a. extrinsic allergic alveolitis): 
 • Hypersensitivity pneumonitis, Farmer's lung, Bird
ILD caused by inhalation ... • Vasculitis: Granulomatosis ... with polyangiitis ... , Eosinophilic granulomatosis ... with polyangiitis
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Lung Abscess - Diagnosis ... • Most common cause ... Lung abscess ... Vasculitis (e.g., Granulomatosis ... with polyangiitis
Lung Nodule - Differential Diagnosis Algorithm
Nodule on > 2 Years Without a Change in Size:
 •
Granuloma • Abscess ... Arthritis • Granulomatosis ... with polyangiitis ... / microscopic polyangiitis ... Diagnosis #Algorithm #Causes
CNS Ring-Enhancing Lesions - Immunocompromised vs Immunocompetent
Multiple Ring-Enhancing Lesions:
 • Toxoplasmosis (CD4 < 100)
 • Other
Lymphomatoid granulomatosis ... lymphoproliferative disease ... lesions • 80% with lung ... Syphilis • Pyogenic Abscess ... differential #diagnosis #causes
Pulmonary Renal Syndromes - OnePager Summary
Autoimmune ANCA vasculitis (AAV): GPA (granulomatous with polyangiitis), EGPA (eosinophilic granulomatosis
(eosinophilic granulomatosis ... life-threatening diseases ... Inflammatory eye disease ... Goodpasture's cause ... sparing of the lung
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
• Chronic lung ... breast cancer Granulomatous ... lymphocytic interstitial lung ... DDX - Other causes ... hypogammaglobulinemia #immunology #hematology
Ear Pain (Otalgia) - Differential Diagnosis Framework

Primary Otalgia 
 - Pain that originates from the ear
Primary Otalgia: • Granulomatosis ... with polyangiitis ... , abscess, pulpitis ... subdural hematoma, lung ... differentiate disease
Vancomycin induced Leukocytoclastic Vasculitis (LCV) of the Hand
70 M vertebral osteomyelitis on vancomycin and cefepime for
myxoma, Behcet disease ... Churg-Strauss syndrome, granulomatosis ... with polyangiitis ... Hand #skinrash #dermatology ... #clinical #photo
Causes of Night Sweats - Differential Diagnosis
 • Malignancy: Lymphoma, Leukemia, Other neoplasm
 • Infections: Human
Causes of Night ... coccidioidomycosis), Lung ... abscess, Endocarditis ... fatigue syndrome, Granulomatous ... diseases, Chronic