Fig. 3From: Perianal and perineal rhabdomyosarcomas: a retrospective multicenter study of 35 casesAlveolar RMS: Round, oval or spindle shaped tumor cells were arranged in an acinar, tubular, fissured or nest-like form. Mutifocal necrosis and interstitial fibrosis were constantly presented. (Magnification: × 40)Back to article page