A Case Report of Dendritic Fibromyxolipoma in the Back of Pediatric Patient
Abstract Objective To investigate the pathologic features and differential diagnosis of a pediatric dendritic fibromyxolipoma (DFML). Methods We collected one case of dendritic fibromyxolipoma in the back of a pediatric patient (6 years old, female) diagnosed at the First Affiliated Hospital of Dalian Medical University. The case of DFML was studied by H&E and MaxVision immunohistochemical staining. The clinical and pathological features were analyzed with review of the literatures Results The tumor was round or ovoid in shape and appeared in the surface of back. Microscopically, the tumor was mainly consisted of stellate to spindle cells, rope-like collagen fibers and varying amount of mature lipocytes embedded in myxoid stroma. Immunohistochemical staining showed that spindle cells and stellate cells were positive for vimentin, CD34 and BCL-2. Conclusion DFML is a rare special variant of lipoma. It is benign, and it seems to be misdiagnosed as myxoid liposarcoma prior to the admission to our hospital. The pathological histomorphology and immunohistochemistry phenotypes are helpful to the diagnosis and differential diagnosis. Given that DFML mainly occurs in the elderly, this case is rare and worthy to be reported since it occurs in children.