Question

Difficulty: MediumRheumatology and Immunology

Match each patient's clinical presentation with the most likely rheumatologic diagnosis.

  • A 45-year-old man with chronic hepatitis B presents with postprandial abdominal pain, testicular pain, and a new-onset right foot drop.Polyarteritis nodosa
  • A 38-year-old man with severe asthma and chronic rhinosinusitis develops asymmetric neuropathy and palpable purpura. Labs reveal marked peripheral eosinophilia.Eosinophilic granulomatosis with polyangiitis
  • A 42-year-old woman presents with recurrent epistaxis, saddle-nose deformity, hemoptysis, and hematuria. Testing is positive for PR3-ANCA.Granulomatosis with polyangiitis
  • A 72-year-old woman presents with temporal headache, scalp tenderness, jaw claudication, and amaurosis fugax.Giant cell arteritis

Answer

Polyarteritis nodosa matches with the hepatitis B patient; Eosinophilic granulomatosis with polyangiitis matches with the asthmatic patient with eosinophilia; Granulomatosis with polyangiitis matches with the PR3-ANCA positive patient with respiratory and renal involvement; Giant cell arteritis matches with the older patient with jaw claudication and visual symptoms.
Each diagnosis is established by recognizing specific syndromic clusters: PAN is associated with Hepatitis B and mesenteric/neurologic involvement; EGPA features asthma and eosinophilia; GPA features upper/lower airway necrosis and glomerulonephritis; GCA features cranial symptoms in older adults.

Step-by-Step Solution

1
Analyze each patient's demographic profile, comorbidities, and pattern of organ involvement.
Identified distinct syndromic clusters for each patient (e.g., asthma/eosinophilia vs. upper/lower respiratory/renal).
Vasculitides are diagnosed clinically by recognizing specific patterns of organ involvement and associated demographic/serologic risk factors.
2
Correlate the identified syndromic clusters with the known pathophysiologic features of specific systemic vasculitides.
Matched each clinical vignette to the corresponding small, medium, or large vessel vasculitis.
Accurate diagnosis dictates the appropriate immunosuppressive therapy and monitoring strategy.

Key Concept

Diagnosis and clinical recognition of systemic vasculitides
Rate this question