title: [3 cases of primary sarcoma of the bladder and review of the literature in Japan].
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007564:Japan; D007890:Leiomyosarcoma / Q000453:epidemiology / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012208:Rhabdomyosarcoma / Q000453:epidemiology / Q000628:therapy*; D012737:Sex Factors; D001749:Urinary Bladder Neoplasms / Q000453:epidemiology / Q000628:therapy*