Lichen Myxedematosus: Case Report and Review of Literature
March 2020 | Volume 19 | Issue 3 | Case Reports | 3 | Copyright © March 2020
Published online February 5, 2020
Amaris Geisler BS,a Mojgan Hosseinipour DO,b Nikki S. Vyas MD,c Robert Phelps MD,d Charles Gropper MD,e Cindy Hoffman DOf
aMedical Student, CUNY School of Medicine, New York, NY bResident Physician, St. Barnabas Hospital, Department of Dermatology, Bronx, NY cResident Physician, Department of Pathology, Mount Sinai Medical Center, New York, NY dDirector of Dermatopathology, Mount Sinai Medical Center, New York, NY eChief of Dermatology, St. Barnabas Hospital, Bronx, NY fProgram Director, St. Barnabas Hospital, Department of Dermatology, Bronx, NY
We present the case of a 66-year-old Hispanic male referred by his primary care physician for evaluation of asymptomatic dark spots on his trunk and extremities present for about one-year. Physical exam revealed smooth, brown hyperpigmented papules coalescing into plaques on the trunk. Multiple well-demarcated oval dark brown plaques measuring 3 cm in size were located on the upper back, peri-umbilical area, bilateral lower extremities, and buttocks. A diagnosis of lichen myxedematosus was made based on histologic features observed in the dermis.
There are 5 subtypes of LM: a discrete papular form, acral persistent papular mucinosis, self-healing papular mucinosis, papular mucinosis of infancy, and a pure nodular form. Occasional patients with LM have atypical features or features intermediate between scleromyxedema and localized LM. We present a case of atypical LM with mixed features of the different subtypes. Herein we will review the varied clinical presentations of LM and highlight the distinguishing features of scleromyxedema.
J Drugs Dermatol. 2020;19(3): doi:10.36849/JDD.2020.4864