ABPath Dermatopathology Practice Questions - ABPath Dermatopathology Subspecialty Certification Examination Exam

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A subepidermal blister biopsy from an elderly patient shows a tense bulla with eosinophil-rich infiltrate. DIF reveals linear IgG and C3 along the basement membrane zone. Salt-split skin shows IgG binding to the epidermal (roof) side. The diagnosis is:

Pemphigus vulgaris Bullous pemphigoid Epidermolysis bullosa acquisita Dermatitis herpetiformis

Correct Answer:

Bullous pemphigoid

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