The Role of RB1 and Secondary Genomic Changes in the Development of Spindle Cell and Pleomorphic Lipomas. - Hellberg M; Difilippo V; Gottberg E; Hesla A; de Flon FH; Nilsson J; Magnusson L; Sydow S; Piccinelli P; Hofvander J; Mertens F (Genes, chromosomes & cancer, 2025)