Cutaneous Mastocytosis With Predominant Infiltration of Promastocytes

Abstract: Mastocytosis is a heterogeneous group of disorders with a variable clinical course, ranging from indolent disease with normal life expectancy to highly aggressive disease. In the skin, mast cells may show a spindle-shape appearance or appear as round cells with wide, polygonal cytoplasm. In this study, we present a case series of 4 patients with cutaneous childhood-onset mastocytosis in whom skin mast cells showed striking nuclear pleomorphism with bilobed and multilobed nuclei. Such finding does not seem to represent a malignant phenotype of the disease in the skin, although the true biological significance and the potential prognostic impact remain to be determined. Correspondence: Nicole Knöpfel, MD, Department of Dermatology, Hospital Infantil Universitario Niño Jesús, C/Menéndez Pelayo, 65, Madrid 28009, Spain (e-mail: nicole.knopfel@gmail.com). The authors declare no conflicts of interest. Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved.

https://ift.tt/2zsQPkL