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Difficulty: MediumRheumatology and Immunology

Match each patient's clinical presentation with the most characteristic diagnostic or pathologic finding associated with their underlying condition.

  • An 18-year-old female patient evaluated for unexplained fatigue is found to have a blood pressure of 140/90 mm Hg in the right arm and 90/60 mm Hg in the left arm, along with a diminished left radial pulse.Granulomatous thickening and narrowing of the aorta and its major branches on imaging
  • A 45-year-old male patient with a history of chronic hepatitis B infection presents with new-onset right foot drop, unintentional weight loss, and severe abdominal pain occurring primarily after eating.Transmural inflammation with fibrinoid necrosis and microaneurysms of medium-sized arteries
  • A 50-year-old male patient presents with acute hemoptysis and is found to have red blood cell casts on urinalysis; his medical history is notable for chronic, treatment-resistant sinusitis.Granulomatous inflammation, tissue necrosis, and necrotizing vasculitis of small- and medium-sized vessels
  • A 35-year-old male patient is evaluated for an acute episode of anterior uveitis and reports a multi-year history of painful, recurrent ulcerations on his buccal mucosa and scrotum.Nonspecific small-vessel vasculitis characterized by a hyperreactive skin response to minor trauma (pathergy)

Answer

The 18-year-old female (Takayasu arteritis) matches with aortic granulomatous thickening; the 45-year-old male (polyarteritis nodosa) matches with transmural inflammation and microaneurysms; the 50-year-old male (granulomatosis with polyangiitis) matches with necrotizing granulomatous vasculitis; and the 35-year-old male (Behçet syndrome) matches with nonspecific vasculitis and pathergy.
Matching each patient to their respective diagnostic finding requires synthesizing the clinical clues (e.g., age, involved organs, associated viral infections) to identify the specific vasculitic syndrome, and then recalling the characteristic imaging or biopsy features that define that syndrome pathologically.

Step-by-Step Solution

1
Analyze the first clinical vignette to determine the underlying diagnosis and its pathologic correlate.
The 18-year-old female with upper extremity blood pressure discrepancies and pulse deficits has Takayasu arteritis, which correlates with granulomatous thickening of the aorta and its branches.
Takayasu arteritis is a large-vessel vasculitis predominantly affecting young women, leading to arterial narrowing and ischemic symptoms in the upper extremities.
2
Evaluate the second clinical vignette linking the symptoms and medical history to a specific vasculitis.
The 45-year-old male with hepatitis B, postprandial abdominal pain (intestinal ischemia), and foot drop (mononeuritis multiplex) has polyarteritis nodosa (PAN). This correlates with transmural inflammation, fibrinoid necrosis, and microaneurysms.
PAN is a classic medium-vessel vasculitis that spares the lungs, frequently associates with viral hepatitis, and produces distinct angiographic microaneurysms.
3
Assess the third clinical vignette focusing on the specific organ systems involved.
The 50-year-old male with upper respiratory tract, lower respiratory tract, and renal involvement has granulomatosis with polyangiitis (GPA), which correlates with necrotizing granulomatous inflammation.
GPA (formerly Wegener granulomatosis) is a small-vessel vasculitis that characteristically presents with this c-ANCA-associated classic triad and granuloma formation.
4
Review the fourth clinical vignette identifying the classic triad of recurrent symptoms.
The 35-year-old male with recurrent oral/genital ulcers and uveitis has Behçet syndrome. This matches with nonspecific small-vessel vasculitis and a hyperreactive skin response (pathergy).
Behçet syndrome is an immune-mediated multi-system inflammatory disorder where the pathergy reaction serves as a highly specific diagnostic clue.

Key Concept

Clinical presentation and diagnostic findings of systemic vasculitides and vasculopathies.
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Topics

Rheumatology and Immunology

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