9 results
ANTI-MDA5 DERMATOMYOSITIS

Cutaneous manifestations:
• Periorbital heliotrope (blue-purple) rash with edema
• Erythematous rash on the face, or the
severity of the disease ... anti-NXP2 Abs Lung ... Mechanic's hands #AntiMDA5DM ... #AntiMDA5 #Dermatomyositis ... dermatology #diagnosis
IgG4-Related Disease
Clinical history:  Man, 60 years, multiorgan involvement, unique or multiple inflammatory pseudotumor
4 phenotypes:
 •
IgG4-Related Disease ... biliary, renal, lung ... concentration PET-CT ... IgG4 #Related #Disease ... management #phenotypes #workup
Nontuberculous Mycobacteria (NTM) Infections 

Mycobacterial species other than those belonging to the Mycobacterium tuberculosis complex and
status NTM Cause ... disease, volume ... disease ... Hematologic malignancy ... Imaging, high res CT
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
disease • ... Granulomatous disease ... • Liver diseases ... disease (GLILD) ... hypogammaglobulinemia #immunology #hematology
Polycythemia - Differential Diagnosis Algorithm
Polycythemia itself isn’t a diagnosis. Like many things, it is a condition
Better call hematology ... , this list is long ... can drive this disease ... As with many disease ... #hematology
Erythemas Summarized
Erythema ab igne
 • A dermatosis that results from repeated exposure to heat (fires, heating
early localized disease ... cancers, including lung ... called "Bazin's disease ... so-called fifth disease ... differential #diagnosis #dermatology
Autoimmune Myositis - Differential Diagnosis Framework

Inflammatory Myopathies: Commonly symmetric proximal muscle weakness, no substantial muscle pain
disease Malignancy ... disease • Dysphagia ... disease • Myositis ... skeletal muscle disease ... myocarditis Other Diseases
Elevated Globulin - Protein Gap (Total Protein - Albumin > 4)

Work-up of an Elevated Globulin Gap:
•
• Heavy chain disease ... plasmacytoma • Castleman disease ... Sarcoidosis) • Liver disease ... gastric tumors • Hematology ... differential #diagnosis #hematology
Anti-NXP-2 Dermatomyositis

What?
DM with generalized subcutaneous edema
Pts have more myalgias, more severe weakness, and an increased prevalence
Muscle atrophy may cause ... had more severe disease ... Non-small-cell lung ... Dermatomyositis: • ILD ... #dermatology