We report a case of amyloidosis cutis dyschromica with diffuse postinflammatory-type hypo- and hyperpigmentation all over the body. The diagnosis was confirmed with routine light microscopic and immunohistochemical staining methods. The patient was treated with acitretin with a good response.
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http://dx.doi.org/10.1111/j.1346-8138.2005.tb00783.x | DOI Listing |
J Cutan Pathol
December 2024
Department of Dermatology, The Affiliated Hospital of Qingdao University, Qingdao, China.
A 67-year-old male presented with plaques around the orbit and ecchymosis on the neck and back of hands for 2 years. Physical examination showed seborrheic-keratosis-like plaques around the orbit, ecchymosis on the neck and back of hands, as well as nail dystrophy. Serum λ light chain was positive.
View Article and Find Full Text PDFJ Dermatol
December 2024
Department of Dermatology, The First Affiliated Hospital, Anhui Medical University, Hefei, Anhui, China.
Primary cutaneous amyloidosis (PCA) is a chronic pruritic skin disease. The apple-green birefringence of Congo red-stained amyloid under a polarized light microscope (CR-PLM) remains the gold standard in the diagnosis of PCA. However, there are some limitations to this approach.
View Article and Find Full Text PDFDermatol Online J
August 2024
Department of Dermatology, Faculty of Medicine, Jordan University of Science and Technology, Irbid, Jordan.
Macular amyloidosis is a variant of primary localized cutaneous amyloidosis in which amyloid protein is believed to be derived from keratinocytes. The care of this variant generally focuses on addressing the associated symptoms without the need to assess for underlying disease. However, an increasing number of cases of primary localized cutaneous amyloidosis have been reported in association with systemic diseases, particularly autoimmune diseases.
View Article and Find Full Text PDFFront Immunol
November 2024
School of Medicine, Tongji University, Shanghai, China.
Lichen amyloidosis (LA) is a predominant type of primary cutaneous amyloidosis that is characterized by persistent and intense skin itching. Although multiple therapeutics strategies are available for its treatment, there is no standard treatment so far. Abrocitinib, an oral small-molecule Janus kinase 1 inhibitor, has been authorized for the treatment of severe atopic dermatitis (AD) and can also provide rapid relief from pruritus.
View Article and Find Full Text PDFClin Pract
October 2024
Department of Endocrinology, "Carol Davila" University of Medicine and Pharmacy, 020021 Bucharest, Romania.
Background: Medullary thyroid carcinoma (MTC), the third most frequent histological type of thyroid malignancy, may be found isolated or as part of multiple endocrine neoplasia type 2 (MEN2). One particular subtype of this autosomal dominant-transmitted syndrome includes an association with cutaneous lichen amyloidosis, although, generally, a tide genotype-phenotype correlation is described in patients who carry proto-oncogene pathogenic variants.
Methods: Our objective was to provide an endocrine perspective of a case series diagnosed with -positive familial MTC associated with cutaneous primary lichen amyloidosis amid the confirmation of MEN2.
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