PLIN5 and undifferentiated (embryonal) sarcoma: PLIN5 expressed in all epithelioid sarcomas (8/8), in more than half of undifferentiated sarcomas (27/34), fibrosarcomas (15/18), Ewing's sarcomas (13/17), rhabdomyosarcomas (14/22) and leiomyosarcomas (24/42), and in less than half of dermatofibrosarcoma protuberans (17/38).