Lupus Erythematosis
©
William Herring, MD, FACR
Collagen Vascular Diseases
Systemic Lupus Erythematosus
Scleroderma
Rheumatoid Lung
Polyarteritis Nodosa
Systemic Lupus Erythematosus
Lungs and pleura involved more often in
lupus than other collagen vascular
diseases
Type III immune complex phenomenon
Lupus
Clinical-1
Anti-nuclear antibody present in 87%
LE cells in 78%
Rheumatoid factor in 21%
False + test for syphilis in 24%
Lupus
Clinical-2
Skin changes include
Butterfly rash
Alopecia
Photosensitivity
Raynaud's
Sjogren’s Syndrome frequent
Lupus
Thoracic Changes
Pleural effusions
Discoid atelectasis at both bases
Pericardial effusions
Lupus pneumonitis
Drug-induced Lupus -1
Hydralazine
Pronestyl (procainamide)
Dilantin
INH
Account for 90% of cases of drug-
induced lupus
Drug-induced Lupus -2
Pleuroparenchymal changes more
common than SLE
Does not involve kidney
Disappears if drug is stopped
Lupus
X-ray-1
Pleural effusion is most common lung
manifestation
Secondary to pleuritis
Usually bilateral and small but may be very
large
If unilateral, more often on the left
Bilateral pleural effusions in Lupus
Lupus
X-ray-2
Patchy areas of consolidation at lung
bases, especially peripherally
May be 2° to infection (common) or lupus
infiltrates (uncommon)
Discoid atelectasis common
Massive pulmonary hemorrhage may
occur
Airspace disease in the right lower lobe
secondary to Lupus
Lupus
X-ray-3
Cavitary nodules may occur
More common in RA
Cardiomegaly 2° to
Pericardial effusion
Cardiomyopathy
Diffuse interstitial fibrosis does not occur
in SLE
Pericardial effusion and bilateral pleural
effusions
Think of SLE:
Pleural effusion
Discoid atelectasis
Patchy infiltrates at the bases
DDx: thromboembolic disease
The End