"Fat-rich" (Spindle Cell-poor) Variants of Atypical Spindle Cell Lipomatous Tumors Show Similar Morphologic, Immunohistochemical and Molecular Features as "Dysplastic Lipomas": Are They Related Lesions? Comment on Michal et al (2018). (February 2019) - Creytens, David; Mentzel, Thomas; Ferdinande, Liesbeth; van Gorp, Joost; Van Dorpe, Jo; Flucke, Uta