A 36-yrs-old woman presents with increased trouble swallowing. Physical examination finds hypeension and sclerodactyly. Lab tests find Anti- Scl- 70. Which of the following biopsies is most characteristic of this disorder?
A conjunctival biopsy that reveals noncaseating granulomas A peripheral nerve biopsy that reveals rare acid- fast bacteria A skin biopsy that reveals dermal fibrosis with an absence of adnexal structures A subcutaneous fat biopsy that reveals an infiltrate of plasma cells and eosinophils