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Spontaneously Occurring Leiomyosarcomas of the Mouse Urinary BladderExperimental Pathology Department, American Cyanamid Company, Pearl River, New York 10965
Toxicology Pathology Associates, 1102 Briar Creek Road, Little Rock, Arkansas 72211 Spontaneous leiomyosarcomas of the mouse urinary bladder have not been reported. Data from 8 chronic toxicity/oncogenicity studies that included 400 male and 400 female mice were reviewed and evaluated to gather information on spontaneously occurring urinary bladder leiomyosarcomas. Three control mice from 3 different studies had leiomyosarcomas in the submucosa of the trigone area of the urinary bladder. These tumors were not connected to the surface epithelium; however, they were connected to and destroyed the smooth muscle layer of the urinary bladder. This communication describes the incidence and histopatho-logical features of these neoplasms.
Key Words: Urinary system neoplasm sarcoma smooth muscle tumor leiomyoblastoma
Toxicologic Pathology, Vol. 19, No. 2,
164-167 (1991) This article has been cited by other articles:
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