20 results
Small Vessel Vasculitides
 • Granulomatosis with polyangiitis - Granulomatous manifestations (e.g., nasal crusting, destructive sinusitis, pulmonary
Small Vessel Vasculitides ... retroorbital mass) • Microscopic ... Cryoglobulinemic vasculitis ... - Rare in absence ... #vasculitis #differential
Petechiae/Purpura - Diagnostic Algorithm. Pathophysiology: 1) Represent the passage of erythrocytes from the intravascular to extravascular
vascular integrity (trauma ... , infection, vasculitis ... process such as vasculiitis ... #Dermatology #Rash ... Palpable #Algorithm #Differential
Causes of Petechial Rash - Differential Diagnosis Algorithm

Pinpoint areas (less than 2 mm) of hemorrhage, which
- Differential ... hemorrhage, which are ... integrity: - Trauma ... Sjogren's, GPA, EGPA, Microscopic ... #Differential #
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
- Differential ... PR3-ANCA): • Microscopic ... mucositis - Rash ... Dx: GPA, EGPA, microscopic ... differential #diagnosis
Petechial/Purpuric Rashes- THE ALGORITHMIC APPROACH 

These rashes can be especially challenging and are
associated with devastating differential
with devastating differential ... purpura occurs in vasculitic ... petechial or purpuric rash ... as autoimmune vasculitis ... Purpural #Purpuric #Rash
ANCA-Associated Vasculitis
There are many definitions, but most come down to the presence of granulomas (pathologically or
ANCA-Associated Vasculitis ... There are many ... inflammation: • Microscopic ... StanfordChiefs #ANCA #Vasculitis ... #differential #
Dermatologic Manifestations of Granulomatosis with Polyangiitis (GPA)

Skin involvement in granulomatosis with polyangiitis (GPA) is common and
• Pauci-immune vasculitis ... Maculopapular rash ... reticularis Differential ... Polyarteritis nodosa • Microscopic ... #dermatology #rash
Hematuria - Differential Diagnosis Framework

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
Hematuria - Differential ... urine sediment Microscopic ... Diagnostic of GN or vasculitis ... Malignancy • Trauma ... #Hematuria #Differential
Lymphocutaneous Sporotrichiosis Infection

Landscaper w/ painless nodular rash of arm present for months wax and wane; diagnosis?
Lymphocutaneous
painless nodular rash ... sporotrichiosis minor trauma ... biopsy preferred Differential ... Infection #clinical #photo
Vasculitis - Differential Diagnosis Framework

When to Consider Vasculitis:
• Purpura, ischemic skin lesions
• Mononeuritis multiplex
• Hematuria, proteinuria,
Vasculitis - Differential ... Differential Diagnosis ... diseases to exclude are ... , mucositis • Rash ... (PR3-ANCA)): Microscopic