MULTIPHASIC INCIDENCE OF FOREIGN BODY-INDUCED SARCOMAS

  • 1 January 1976
    • journal article
    • research article
    • Vol. 36  (10) , 3681-3683
Abstract
Single or multiple plastic films (unplasticized vinyl chloride vinyl acetate copolymer) of different sizes and shapes were implanted s.c. in female CBA/H and CBA/H-T6 mice. Tumor incidence increased and accelerated with increased total surface area of multiple implants or with increased size of single implants. Tumor distribution curves over time were multiphasic. The profiles changed in proportion to implant size. These findings indicate class differences between tumors according to latency. Since latency is known to be a predetermined characteristic of foreign body-induced tumors, class differences seem to exist at the originator cell level, reflecting diversity of intrinsic carcinogenic factors.