Palifermin is a human keratinocyte growth factor that is efficacious in reducing duration and severity of oral mucositis during autologous haematopoietic stem-cell transplantation for haematological cancer as well as chemotherapy for colorectal cancers. We report the clinical and histological characteristics of a series of five patients who developed flexural hyperpigmentation after treatment with palifermin. All patients showed ill-defined symmetrical hyperpigmented papillomatous plaques with slight erythema in the skin folds, especially affecting axillary and inguinal areas. The most striking histological finding was the thickened granular layer in all patients. We demonstrate that filaggrin, an essential component in the terminal differentiation of the epidermis, was upregulated in these cases. Palifermin-induced flexural hyperpigmentation is a newly defined clinical and histological entity. The possible aetiology is discussed.
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http://dx.doi.org/10.1111/j.1365-2133.2008.08816.x | DOI Listing |
HCA Healthc J Med
April 2024
Medical City Fort Worth, Fort Worth, TX.
Dermatopathology (Basel)
February 2024
Department of Clinical-Surgical, Diagnostic and Pediatric Sciences, University of Pavia, 27100 Pavia, Italy.
Cutis
November 2023
Dr. Loyd is from the University of Oklahoma College of Medicine, Oklahoma City. Drs. Weissman and Levin are from the Department of Dermatology, University of Oklahoma Health, Oklahoma City.
Arch Dermatol Res
September 2023
Department of Pediatrics, Faculty of Medicine, Srinakharinwirot University, HRH Princess Maha Chakri Sirindhorn Medical Center, Rangsit-Nakhonnayok Road, Ongkharak, 26120, Nakhonnayok, Thailand.
Acanthosis nigricans is characterized by the presence of velvety hyperpigmentation of the skin over the neck and the flexural areas. Regardless of different modalities of treatment, none provides a definite standard cure. This study aims to assess the efficacy of topical 10% salicylic acid compared to 10% urea cream in treating acanthosis nigricans in adolescents.
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