Examkin

Question

Difficulty: MediumRheumatology and Immunology

Match each clinical vignette describing a patient's presentation to the most likely systemic vasculitis diagnosis.

  • A 45-year-old man with chronic recurrent sinusitis, hemoptysis, and hematuria. Biopsy of a nasal lesion reveals necrotizing granulomas.Granulomatosis with polyangiitis
  • A 35-year-old man with adult-onset asthma, chronic rhinosinusitis, and a new right-sided foot drop. Laboratory studies reveal marked peripheral eosinophilia.Eosinophilic granulomatosis with polyangiitis
  • A 50-year-old man with postprandial abdominal pain, livedo reticularis on his legs, and new-onset hypertension. He recently tested positive for Hepatitis B surface antigen.Polyarteritis nodosa
  • A 6-year-old boy with palpable purpura on the buttocks and thighs, joint swelling in the knees, and colicky abdominal pain following an upper respiratory tract infection.IgA vasculitis

Answer

The correct matches align the classic clinical triad of upper/lower respiratory and renal disease with Granulomatosis with polyangiitis; asthma and eosinophilia with Eosinophilic granulomatosis with polyangiitis; Hepatitis B association and mesenteric ischemia with Polyarteritis nodosa; and the childhood purpura tetrad with IgA vasculitis.
Systemic vasculitides are highly distinguishable by their specific clinical syndromes. Granulomatosis with polyangiitis classically presents with a triad of upper respiratory, lower respiratory, and renal manifestations. Eosinophilic granulomatosis with polyangiitis is defined by its triad of asthma, eosinophilia, and vasculitis (often presenting as mononeuritis multiplex). Polyarteritis nodosa is a medium-vessel disease heavily linked to Hepatitis B, presenting with mesenteric and renal ischemia while strictly sparing the lungs. Finally, IgA vasculitis is a self-limiting small-vessel childhood disease presenting with purpura, arthritis, and abdominal pain.

Step-by-Step Solution

1
Analyze the first clinical vignette for key presenting symptoms and distinct biopsy findings.
Identified concurrent upper respiratory, lower respiratory, and renal involvement alongside necrotizing granulomas.
To differentiate this presentation from other ANCA-associated vasculitides that lack granulomatous inflammation.
2
Examine the second vignette's combination of pulmonary, neurologic, and laboratory findings.
Correlated adult-onset asthma, mononeuritis multiplex (foot drop), and significant eosinophilia.
To identify the hallmark allergic and eosinophilic phase unique to this specific small-vessel vasculitis.
3
Assess the third vignette for specific organ involvement and viral serology associations.
Identified medium-vessel involvement (mesenteric ischemia, hypertension, livedo reticularis) and a direct link to Hepatitis B.
To confirm the diagnosis of a classical viral-associated medium-vessel vasculitis that typically spares pulmonary circulation.
4
Evaluate the pediatric presentation in the fourth vignette.
Recognized the classic tetrad of palpable purpura, arthritis, abdominal pain, and post-URI onset in a child.
To identify the most common childhood systemic vasculitis, which is IgA-mediated.

Key Concept

Clinical differentiation of systemic vasculitides is achieved by analyzing vessel size involvement, specific organ system manifestations, and unique laboratory or histopathological associations.
Rate this question

Topics

Rheumatology and Immunology

More questions from this topic