{"title":"Primary Systemic Amyloidosis Characterized by Multiple Keratinous Cysts: A Case Report.","authors":"Xiaoou Lu, Weiwei Fu, Demin Xie, Fengjuan Li, Jiali Zhang, Da Wang, Yu Sun, Hongquan Chen","doi":"10.1111/cup.14763","DOIUrl":null,"url":null,"abstract":"<p><p>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. Histopathological examination demonstrated multiple keratinous cysts in the dermis and eosinophilic homogeneous material in the dermis, which was positive for Congo red with apple-green birefringence on polarized light. Kidney biopsy showed deposition of acellular eosinophilic material in the arteriole wall. Congo red staining was positive. A bone marrow biopsy revealed multiple myeloma. The diagnosis of primary systemic amyloidosis with multiple myeloma was made.</p>","PeriodicalId":15407,"journal":{"name":"Journal of Cutaneous Pathology","volume":" ","pages":""},"PeriodicalIF":1.6000,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Cutaneous Pathology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1111/cup.14763","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"DERMATOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
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. Histopathological examination demonstrated multiple keratinous cysts in the dermis and eosinophilic homogeneous material in the dermis, which was positive for Congo red with apple-green birefringence on polarized light. Kidney biopsy showed deposition of acellular eosinophilic material in the arteriole wall. Congo red staining was positive. A bone marrow biopsy revealed multiple myeloma. The diagnosis of primary systemic amyloidosis with multiple myeloma was made.
期刊介绍：
Journal of Cutaneous Pathology publishes manuscripts broadly relevant to diseases of the skin and mucosae, with the aims of advancing scientific knowledge regarding dermatopathology and enhancing the communication between clinical practitioners and research scientists. Original scientific manuscripts on diagnostic and experimental cutaneous pathology are especially desirable. Timely, pertinent review articles also will be given high priority. Manuscripts based on light, fluorescence, and electron microscopy, histochemistry, immunology, molecular biology, and genetics, as well as allied sciences, are all welcome, provided their principal focus is on cutaneous pathology. Publication time will be kept as short as possible, ensuring that articles will be quickly available to all interested in this speciality.
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