Indeterminate cell histiocytosis in a Chinese patient with progressive and extensive nodular lesions and mixed indeterminate cell and macrophage‐monocyte lineage. (30th March 2018)

• Record Type: Journal Article
• Authors: Chen, Qiping; Lee, Joyce S.‐S.; Liang, Michelle W.; Chan, Michelle M.F.; Pujol, Ramón M.; Requena, Luis; Tan, Suat Hoon
• Is Part Of: Journal of cutaneous pathology. Volume 45:Number 6(2018)
• Page Start: 428
• Page End: 433
• Publication Date: 2018-03-30
• Subjects: Chinese -- histiocytosis -- indeterminate cell histiocytosis; Skin -- Diseases -- Periodicals; Dermatology -- Periodicals; 616
• DOI: 10.1111/cup.13132
• Languages: English
• ISSNs: 0303-6987

Abstract

Abstract : Indeterminate cell histiocytosis (ICH) is an extremely rare cutaneous neoplastic disorder. It has the immunophenotypic features of both Langerhans and non‐Langerhans cell histiocytosis. We report here a case of a healthy young Chinese woman who presented with disfiguring, thick, infiltrated cutaneous nodules on the face, trunk and extremities which appeared progressively over a period of 4 years. No systemic involvement has been detected so far. Results of a skin biopsy showed diffuse dermal infiltration of histiocytoid cells with indented nuclei and positive staining for S100 and CD1a and negativity for CD207 (langerin). Admixed within were some CD68‐positive foamy histiocytes and multinucleated giant cells with focal expression of CD163. Although the clinical presentation is more typical of progressive nodular histiocytosis, the histology and immunoprofile is consistent with ICH. Our report adds to the limited case reports in the current literature of ICH in the Chinese population.