PMC10101219_01
Symmetrical periorbital edema accompanied with purpura, and multiple flesh or brown-colored waxy, smooth, papules were on the patient's face.
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Purpura, petechiae and ecchymoses of the skin and fingernails dystrophy.
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Palmodigital erythematous swelling.
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The patient's right groin showed ecchymosis without obvious cause.
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There was a hard warty plaque on the left buttock at 3 o'clock. Bleeding could occur after crushing.
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Histological features.
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The histopathological features of abdominal skin showed that the eosinophilic, morphous, fissured material was present in the dermis which was positive for Congo red stain (Figures 6 and 7).
Congo red staining (+).
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The histopathological features of abdominal skin showed that the eosinophilic, morphous, fissured material was present in the dermis which was positive for Congo red stain (Figures 6 and 7).
(A and B) Electron microscopy showed that sheets of fine fibers with a diameter of about 10 nm were disorderly distributed in the dermis, which is in accord with amyloidosis.
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Electron microscopy showed that sheets of fine fibers 10nm in diameter were disorderly distributed in the dermis (Figure 8).