Abstract
Localized involutional lipoatrophy is a rare, sporadic disease with female tendency and characterized by focal loss of adipose tissue. We report two sisters, aged 8 years and 6 years, who developed asymptomatic depressive areas on the upper left arm and upper right arm, respectively. Cutaneous sonography showed slight thickening of the dermis and remarkably decreased thickness of the cutaneous fat tissue. Histopathology of a biopsy specimen from the elder sister revealed an increase in homogenized collagen bundles and entrapment of eccrine glands high in the dermis, as well as small to medium-sized lipocytes with a scarcity of inflammatory cells.
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