Cassidy M. Nguyen, Jake C. Robertson, Adam Cardenas, Edgar Martinez, Brett H. Keeling, Khang D. Nguyen
{"title":"Pseudocellulitis in the Setting of Pemetrexed Treatment for Non-Small Cell Lung Cancer","authors":"Cassidy M. Nguyen, Jake C. Robertson, Adam Cardenas, Edgar Martinez, Brett H. Keeling, Khang D. Nguyen","doi":"10.1111/cup.14785","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>Pemetrexed is a chemotherapeutic, antimetabolite agent that has been used in oncology to treat diseases such as metastatic non-small cell lung cancer and unresectable malignant pleural mesothelioma. Pemetrexed use may result in pseudocellulitis, which presents as poorly demarcated patches or plaques with erythema, edema, warmth, and tenderness. These lesions can present unilaterally or bilaterally on the lower extremities. The histologic appearance includes vacuolar interface dermatitis, squamous metaplasia of eccrine coils and ducts, sparse mixed neutrophilic and lymphocytic interstitial inflammatory infiltrate, and widened subcutaneous fibrous septa with cystic fat degeneration. We present the case of a 58-year-old woman with non-small cell lung cancer and pemetrexed-induced pseudocellulitis with distinctive histological features. The clinical appearance of patients with this hypersensitivity condition may mimic cellulitis, emphasizing the importance of increased awareness and consideration of pseudocellulitis in the differential diagnosis of patients on chemotherapy to avoid unnecessary hospitalization and treatment.</p>\n </div>","PeriodicalId":15407,"journal":{"name":"Journal of Cutaneous Pathology","volume":"52 4","pages":"284-286"},"PeriodicalIF":1.6000,"publicationDate":"2025-01-04","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://onlinelibrary.wiley.com/doi/10.1111/cup.14785","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
Pemetrexed is a chemotherapeutic, antimetabolite agent that has been used in oncology to treat diseases such as metastatic non-small cell lung cancer and unresectable malignant pleural mesothelioma. Pemetrexed use may result in pseudocellulitis, which presents as poorly demarcated patches or plaques with erythema, edema, warmth, and tenderness. These lesions can present unilaterally or bilaterally on the lower extremities. The histologic appearance includes vacuolar interface dermatitis, squamous metaplasia of eccrine coils and ducts, sparse mixed neutrophilic and lymphocytic interstitial inflammatory infiltrate, and widened subcutaneous fibrous septa with cystic fat degeneration. We present the case of a 58-year-old woman with non-small cell lung cancer and pemetrexed-induced pseudocellulitis with distinctive histological features. The clinical appearance of patients with this hypersensitivity condition may mimic cellulitis, emphasizing the importance of increased awareness and consideration of pseudocellulitis in the differential diagnosis of patients on chemotherapy to avoid unnecessary hospitalization and treatment.
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.