CT disorders and Vasculitides Flashcards
anti-nuclear Ab test
NOT SPECIFIC, indirect immunofluorescence, not used to differentiate types of autoimmune diseases
Populations at risk for autoimmune dz
female prevalence, minority populations
What type of hypersensitivity reaction is SLE?
Type III, autoab to nuclear ag
Pericarditis presentation
substernal, constant, “crushing” chest pain worsens with inspiration and in supine position, pericardial friction rub, diffuse ST elevation
Malar rash pattern
erythematous eruption over cheeks and nasal bridge that spares nasolabial folds
SLE serology
+ANA, +anti-dsDNA, +anti-smith, low C3 and C4 due to increased consumption
Libman-Sacks Endocarditis general patho
Immune complexes deposit on heart valves
SLE treatment regimen
avoid sun exposure, NSAIDS, glucocorticoids, hydroxychloroquine
Cause of mortality in early years of SLE
infections with opportunistic organisms, kidney or CNS dz
Cause of mortality in later years of SLE
accelerated atherosclerosis, thromboembolic events and MI
SLE preventative measures and management
minimize risk factors for atherosclerosis, avoid smoking, influenza and pneumococcal vaccine, preventative CA screening, monitor for avascular necrosis and osteoporosis with corticosteroid use
Type I Antiphospholipid Ab
causes false-positive for syphilis
Type II Antiphospholipid Ab
lupus anticoagulant, risk factor for venous and arterial thrombosis and miscarriage, increases aPTT
Type III Antiphospholipid Ab
anti-cardiolipin antibodies, Beta2GPI
When should Abs for APS be measured to diagnose?
two occasions 12 weeks apart
Treatment for APS
indefinite coagulation
DDX for thrombosis
APS, protein S and protein C deficiency, anti-thrombin deficiency, FactorV Leiden deficiency, sepsis, DIC, TTP
SLE/APS retinopathy
cotton wool spots
DDX for cotton wool spots
hypertension, diabetes, ischemia, infection, trauma, idiopathic
Medications associated with lupus-like syndrome
hydralazine, isoniazid, minocycline, TNF inhibitor, methyldopa, quinidine, procainamide, Sulfa abx
DDx for DLE
discoid lupus, tinea infection (ring worm), psoriasis, morphea
Hallmarks of scleroderma
thickening and hardening of skin, fibrosis of organs, dry skin due to obliteration of eccrine sweat and sebaceous glands
Multisystem affects of SSc
lungs, GI, kidney, MSK, Raynaud phenomenon, hyper or hypopigmentation
Localized SSc is seen in what population?
children
Localized SSc presentation
discreet areas of discolored skin induration, NOT systemic, no Raynaud’s, morphea patches
Limited SSc presentation
CREST - Calcinosis cutitis, raynaud’s, esophageal dismotitlity, sclerodactyly, telangiectasia; pulmonary HTN
Diffuse SSc presentation
systemic, early and progressive internal organ involvement resulting in interstitial lung disease and renal crises
Phases of Diffuse SSc
Inflammatory edematous phase then fibrotic; cutaneous manifestations will cause impaired sweating and loss of body hair, fibrosis of joints
Skin manifestations of SSc
hyper/hypopigmented, dry/itchy skin, masklike facies, microstomia, perioral furrowing, calcium deposits
Primary cause of M&M in SSc
pulmonology manifestations
Key pulmonary manifestations of SSc
aspiration pneumonia, interstitial lung disease, pulmonary artery hypertension
Common pulmonary manifestation of Diffuse SSc
Interstitial lung disease, chronic dry cough, dyspnea, rales
Common pulmonary manifestation of Limited SSc
pulmonary artery hypertension; right heart cath to measure pressure; sxs include dyspnea, syncope, angina, right heart failure
Common renal manifestations of SSc
CKD, Renal crises
Renal crisis sxs
malignant hypertension, hemolytic anemia, progressive renal insufficency
Cardiac manifestations of SSc
myocardial fibrosis, cardiomyopathy, pericarditis, myocarditis, pericardial effusion, arrhythmia
GI manifestations of SSc
malnutrition, xerostomia, esophagus (Barrett esophagus), gastroparesis, Gastric antral vascular ectasia, chronic diarrhea, primary biliary cirrhosis
MSK manifestations of SSc
carpal tunnel, tendon friction rubs, fibrosis and adhesion of tendon sheaths
Thyroid manifestations of SSc
hypothyroidism due to fibrosis
Diagnostic workup of SSc
H&P, especially bp; ESR, ANA, serology, UA, CXR, Barium swallow if indicated, hand x-rays, ECG/echo
SSc serology (diffuse vs limited)
+ANA
Diffuse: Anti-Scl (Anti-topoisomerase I) and anti-RNA pol III
Limited: anti-centromere
tx and management of SSc
no significant therapy; education, ACE inhibitors, calcium channel blockers, anti-reflux meds, glucocorticoids, cyclophosphamide, PDE5 inhibitor
CA associated with Sjogren syndrome
B cell NHL (MALT lymphoma)
Sjogren syndrome serology
+ANA, +RF, high ESR, polyclonal hypergammaglobulinemia, +AntiRo/LA, Low C4, anemia of chronic disease
Diagnostic biopsy essential for Sjogren diagnosis
lip biopsy revealing lymphoid foci in accessory salivary glands
Symptom management for Sjogren dx
artificial tears, ophthalmic lubricating ointments, sugarless candy and frequent sips of water, hydroxychloroquine, extraglandular manifestations
Drugs to avoid in Sjogren syndrome
atropinic drugs and decongestants
Sxs of inflammatory myopathies
symmetrical proximal muscle weakness, myalgias
Serology of inflammatory myopathies
normal ESR, CRP; elevated CK and aldolase
Characteristic skin lesions of dermatomyositis
Gottron’s patches/papules, heliotrope rash, periungual erythema, v-neck erythema
Gottron’s patches description
raised violaceous lesions overlying dorsa of DIP, PIP, MCP
Heliotrope rash
periorbital edema, purplish suffusion over eyelids
V-neck erythema
poikiloderma or “shawl sign;” erytherma over neck/shoulders, upper chest and back
Dx of DM
biopsy (perifascicular atrophy), elevated CK and aldolase, Anti-Jo1 ab
Malignancy associated with DM
ovarian, lung, pancreatic, stomach, colorectal, NHL, cervical, prostate, breast
Sxs of polymyositis
proximal muscle weakness without skin changes
Diagnostic biopsy of PM
endomysial inflammation with invasion of non-necrotic muscle fibers
Tx/management of DM and PM
glucocorticoids, methotrexate, azathioprine, cyclophosphamide
Inclusion body myositis sxs
weakness, especially finger flexion and quadriceps
IBM diagnostic biopsy
endomysial inflammation, rimmed vacuoles with invasion of non-necrotic muscle fibers
Serology and labs for IBM
mild elevation of CK, anti-cN1A autoabs
DDx of proximal muscle weakness
inflammatory myopathies, hypothyroidism, hyperthyroidism, cushing, neuro issues, vasculitides, drugs
Tetrad of IgA vasculitis
palpable purpura without thrombocytopenia, arthritis, abd pain, renal disease
Hallmarks of granulomatosis with polyangiitis
granulomatous inflammation, necrotizing vasculitis, segmental glomerulonephritis
Respiratory tract involvement of GPA
nasal involvement causing saddle nose, erosive sinus dz, CXR with cavitary lesions/infiltrates/nodules
ANCA
Anti-neutrophil cytoplasmic antibody
Hallmarks of Eosinophilic granulomatosis with polyangiitis
asthma and eosinophilia causing vasculitis with granulomas
Prodromal phase of EGPA
allergic disease (asthma/allergic rhinitis)
Eosinophilia-tissue infiltration phase of EGPA
high eosinophils in blood, tissue infiltration
Vasculitis phase of EGPA
systemic necrotizing heart/lungs/nerves/skin, palpable purpura
CBC with Diff EGPA
high eosinophil
Serology of EGPA
ANCA +
Lung biopsy of EGPA
granulomas with eosinophils in tissue
DDx of EGPA
HSP, GPA
Triad of small vessel Bechet Syndrome
mouth ulcers, genital ulcers, eye inflammation
DDx of pulmonary-renal syndromes
granulomatosis with polyangiitis, eosinophilic granulomatosis with polyangiitis, SLE, IgA-mediated disorders, Bechet Syndrome, RA
Population affected by thromboangiitis obliterans
young males that are smokers
Diagnostic angiography of thromboangiitis obliterans
corkscrew appearance
Polyarteritis Nodosa system involvement
skin, nerves, GI, renal, cardiac
Polyarteritis nodosa biopsy
fibrinoid necrosis without granulomas
Polyarteritis nodosa angiogram
micro-aneurysm
Vessels typically involved in Takayasu arteritis
aorta, subclavian, innominate
Vessels typically involved in Giant cell arteritis
cranial arteries, aortic arch
Temporal artery biopsy in giant cell arteritis
segmental granulomatous vasculitis with multinucleated giant cells
Sxs of polymyalgia rheumatica
proximal stiffness, soreness and muscle pain; symmetrical, feelings of weakness due to pain
Primary Raynaud
benign, symmetric, exaggerated by emotion or cold
Secondary Raynaud
secondary to something –CTD, hematologic and endocrine conditions, cisplastin, bleomycin; unilateral
Episodic progression of Raynaud phenomenon
pallor -> cyanosis -> erythema
Management of Raynaud’s
wearing gloves, keep warm, lotions, stop smoking, limit use of sympathomimetic drugs, surgery