Vasculitis Flashcards
What two types of Vasculitis affect Large Vessels?
- Temporal (Giant Cell) Arteritis
- Takayasu Arteritis
What are the 3 types of Vaculitis that affect medium vessels?
- Polyarteritis Nodosa
- Kawasaki Disease
- Buerber Disease
What are the 6 diseases causing small vessel Vasculitis?
- Wegener Granulomatosis
- Microscopic Polyangiitis
- Churg-Strauss Syndrome
- Behcet Disease
- Henoch-Schonlein Purpura
- Crglobulinema
Temporal (Giant Cell) Arteritis
- type of vasculitis
- typical patient profile
- symptoms/complications
- important Lab Values
- mediating Cell Type
- Treatment
Large Vessel Vasculitis
Type: Granulomatous Vasculitis
Patient Profile: >50 White Females
Symptoms/complications: Headache, Jaw Claudication, Visual Changes, Blindness
Labs: Elevated ESR
Mediating Cell Type: T Cell Mediated
Treatment: steriods
Polymyalgia Rheumatica
- Symptoms
- Labs
- Treatment
Symptoms: Proximal Muscle Aches and Pains
Labs: Elevated ESR (>100)
Treatment: Steroids = rapid resolution
Takayasu Arteritis
- type of vasculitis
- typical patient profile
- symptoms/complications
- important Lab Values
- mediating Cell Type
- Treatment
Large Vessel Vasculitis
Type: Graunlomatous Vasculitis
Patient Profile: Adults under 50 y/o (often Asian Females)
Symptoms/Complications: Visual and Neurologic symptoms with Weak or Absent Upper Extremity Pulse, CLASSICALLY INVOLVES AORTIC ARCH BRANCHPOINTS
Labs: Elevated ESR
mediating cell type: not specified
Treatment: steroids - POOR Px
Polyarteritis Nodosa
- type of vasculitis
- typical patient profile
- symptoms/complications
- important Lab Values
- mediating Cell Type
- Treatment
Medium Vessel Vasculitis
Type: Fibrosing
Patient profile: Young Adults, Strong Association with HEPATITIS B
Symptoms/complications: Episodic, Renal Fibrosis/Failure, Widespread involvement (lungs NOT affected)
Cells: neutrophils, eosinophils, and mononuclear cells
Treamtment: Fatal unless treated with Immunosuppression
Kawasaki Disease
- type of vasculitis
- typical patient profile
- symptoms/complications
- important Lab Values
- mediating Cell Type
- Treatment
Medium Vessel Vasculitis
Type: Fibrinoid
Patient Profile: Asian Children
Symptoms/complications: CRASH and burn
C - conjunctivitis
R - Rash
A - Adenopathy (cervicle)
S - Strawberry Tongue
H - hand or foot swelling/desquamation
burn - fever for more than 5 days
Untreated patients may experience Aneurysms and Myocardial Infarctions
Labs: Not Stated
Mediating cell type: Not Stated
Treatment: IV Ig and Asprin
Buerger Disease
- type of vasculitis
- typical patient profile
- symptoms/complications
- important Lab Values
- mediating Cell Type
- Treatment
Medium Vessel Vasculitis
Type: Microabscess Forming
Patient Profile: SMOKERS
Symptoms/complications: Inflammation and thrombosis in arteries of hands and feet eventually causing Cold Sensitivity, Pain, Gangrene of Digits
Labs: none stated
Treatment: QUIT SMOKING (still may not reverse symptoms)
Wegener Granulomatosis (aka Granulomatosis with Polyangiitis)
- type of vasculitis
- typical patient profile
- symptoms/complications
- important Lab Values
- mediating Cell Type
- Treatment
Small Vessel Vasculitis
Type: Granuloma Forming (poorly formed)
Patient Profile: Childen and Adolescents
Symptoms/complications: Chonic Sinusitis, Nasal Septal Perforation, Hemoptysis, Hematuria
Triad:
• Granulomas
• Vasculitis
• Glomerulonephritis
Labs: c-ANCA (PR3-ANCA)
Mediating Cell type: Neutrophils that have directly been activated by c-ANCA
Microscopic Polyangiitis
- type of vasculitis
- typical patient profile
- symptoms/complications
- important Lab Values
- mediating Cell Type
- Treatment
Small Vessel Vasculitis
Type: Leukocytoclastic Vasculitis (NO GRANULOMAS)
Patient Profile: none stated
Symptoms/complications:
• PALAPABLE PURPURA
• Lung and Kidney disease
Labs: p-ANCA present
Treatment: none stated
Churg-Strauss Syndrome
- type of vasculitis
- typical patient profile
- symptoms/complications
- important Lab Values
- mediating Cell Type
- Treatment
Small Vessel Vasculitis
Type: Granulomas with lots of eosinophils
Patient Profile: People with Allergies and Asthma
Symptoms/complication: mutliple organ damage but mostly asthma, allergic rhinitis, sinusitis, potential peripheral neuropathy, MYOCARDIOMYOPATHY kills 1/2 of pts.
Labs: eosinophilia and MPO-ANCA
Treatment: none stated
Henoch-Schonlein Purpura
- type of vasculitis
- typical patient profile
- symptoms/complications
- important Lab Values
- mediating Cell Type
- Treatment
Type: leukocytoclastic vasculitis
Patient Profile: Children with recent URI (upper respiratory tract infection)
Symptoms/complications: (tetrad)
- Palpable Purpura - on Legs and Buttocks
- Arthritis
- Abdominal Pain - and possible bloody stool, and intussusception
- Renal disease - renal vessel involvment
Labs: IgA immune complex deposition
Mediating Cell Type: plasma cells
Treatment: none stated
Cyroglobulinemia
- typical patient profile
- symptoms/complications
- important Lab Values
Patient Profile: Adults with Hepatitis C
Symptoms/complications: digital ischemia leading to necrosis
Labs: proteins that precipitate from serum in the cold
P-ANCA
a
C-ANCA
a
What are some of the symptoms of vasculitis?
• Non-Specific Symptoms of Inflammation (fever, weight loss, etc.) • Palpable Purpura • Livedo Reticularis • Urticaria
What is polymyalgia rheumatica?
• What condition is associated with polymyalgia rheumatica?
Polymyalgia Rheumatica:
- Proximal muscles aches and Stiffness
- Elevated ESR (often >100)
- Rapid Resolution with Steriods
Dissease Association: Termporal (giant cell) Arteritis
****What is this? • What if you push on it and it doesn’t turn white?

• Palpable Purpura - NON-BLANCHING HEMORRHAGES
****What is this? • what do you think it feels like?

• Urticaria - very itchy wheals
****What is this?

• LIVEDO RETICULARIS - network-pattern with purplish discoloration of skin due to blood vessel dilation
What are Palpable Purpura?
• Non-blanching Hemorrhages • May lead to Focal Skin necrosis and ulceration
What is Livido Reticularis?
• Web-like pattern of purple colored skin due to dilation of blood vessels
What are the two common pathologic mechanisms of vasculitis?
- IMMUNE MEDIATED inflammation and Direct invasion of vascular walls by infectious pathogens 2. Infections can also be cause immune complex formation or formation of cross-reactive antibodies
****Differential?
- 63 y/o white female experiences jaw pain when chewing.
- Key Histological Features

Differential: Takayasu Arteritis and Temporal (Giant Cell) arteritis
Dx: Termporal (Giant Cell) Arteritis, granulomatous inflammation in a white female over 50
Histo: Inflammation of Vessel Wall, Disruption of internal elastic lamina, Intimal Fibrosis, GIANT CELLS, Lymphocytes in adventitia

****Histological Section showed a Granulomatous vasculitis.
• DDx? Px?

Differential: Temporal (giant cell) Granulomatous and Takayasu Arteritis (pulseless disease)
Dx: Takayasu Arteritis - these patient often have problems at the branchpoints of their aortic arch
Px: Poor Prognosis
What is an important way to differential between Polyarteritis Nodosa and Wegners Granulomatosis?
Wegners Characteristically involves the lungs, however Polyarteritis Nodosa (PAN) NEVER INVOLVES THE LUNGS
****Young adult presents with hepatitis B and vasculitis that comes and goes.
• Dx and KEY HISTOLOGICAL FEATURES to look for

Dx: Polyarteritis Nodosa
Histo:
- TRANSMURAL necrosis and inflammation
- FIBRINOID NECROSIS replaces inflammatory infiltrate caused by eos, nucs, and mononucs.
*****characteristically inflammatory stages and fibrosing stages may co-exist in the same pt.****
What two medium vessel vasculites closely resemble each other histologically?
• How do you differentiate?
Polyarteritis nodosa - often in young adult with hep B
Kawasaki Disease - mostly seen in young children
**Note: both can lead to aneurysm if untreated; Kawasaki Disease may also lead to MI.
****Histological section taken from the finger of a smoker.
• Key features, Dx?

Key Features:
- Inflammation and Luminal Thrombosis
- Thrombosis may contain Microabscesses of Neutrophils (makes sense b/c smoking raises neutrophil count)
- Organization and Recanalization may occur
Dx: Buerger Disease aka Thromboantiitis Obliterans
Raynaud Phenomenon
- typical patient profile
- symptoms/complications
- Treatment
Medium Vessel Vasculitis
Type: Young Women
Symptoms/Complications:
• Pain in hands or Feet in response to cold or stress
• May cause cyanosis or erythema
Treatment: calcium channel blockers and avoid the cold
***What shown here?

• Raynaud Phenomenon
****What type of vasculitis does this girl probably have?

Wegner’s Granulomatosis - can cause nasal perforation and is typically found in children and adolescents
*****Shown here is a lung?
• Key Histological Features, Dx?

Dx: Wegner’s Granulomatosis
Key Features:
- Necrosis of Lung with Eosinophils, Multinucleated Giant cells (seen at top right)
- Granulomas surrounded by Pallisading Histiocytes (star marks this) with central necrosis
What two diseases may closely resemble Microscopic Polyangiitis and how do you differentiate?
Wegener’s Granulomatosis and PAN
Wegener’s - has granuloma formation, Microscopic Polyangiitis has NO GRANULOMAS
PAN - has lesions of all different ages, Microscopic Polangiitis has lesions that are ALL THE SAME AGE
What are the P’s of Microscopic Polyangiitis?
• Polyangiitis, mPo-ANCA, Palpable Purpura
*****What are some key histological features in this person who expresses p-ANCA?

Dx: Microscopic
Key Histological Features: Leukocytoclastic Vasculitis with Fragmention of Neutrophils in and around Vesssel Walls.
*****This is a vasculitis, what type?

Churg-Strauss Syndrome
• Resembles PAN and Microscopic Polyangiitis BUT includes GRANULOMAS with EOSINOPHILS
What clinical triad is can help you to diagnose Behcet Disease?
- Recurrent Oral Aphthous Ulcers
- Genital Ulcers
- Uveitis
Behcet Disease
- Type
- Epidemiology
- Treatment
Type: Leukocytoclastic Vasculitis and Pnniculitis
Epidemiology: Most common in Japan, China, and Mediterranean
Treatment: Steroids or TNF agonists for immunosuppression
***Ulcers may affect eyes, feet, and genitals (can’t see, can’t pee, can’t climb a tree)
*****What disease is this?
• Key histological Features

Behcet Disease
Key Features: Endothelial Swelling (black arrow) and Perivascular inflammatory cell infiltrate
What are some of the acute and chronic effects of Henoch-Schonlein Purpura?
Acute:
• IgA immune complexes deposit into the vessels causing glomerulonephritis
Chronic:
• Glomerular Necrosis and Hyaline Ateriolosclerosis
Infectious Vasculitis
- Bugs responsible
- complications
Bugs: Pseudomonas, Aspergillis, and Mucor species
Complications: Mycotic aneurysms, Thrombosis, and infarction
****What is wrong with this aorta?

- Wall is fibrotic
- Mural Absess with lots of neutrophil infiltration can be seen