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  • rare
  • Hamartomas and choristomas were found to be rare, noninherited tumor-like conditions that occurred spontaneously in 18 inbred strains of mice with a predominance of the conditions in the C3H/HeJ and C57BL/6J strains. (jax.org)
  • male
  • In a retrospective study, 37 male and 19 female inbred laboratory mice, from 1 to 36 weeks of age, were diagnosed with "lipomatous" hamartomas or choristomas from nearly 10,000 mice examined at necropsy over a 24-month period. (jax.org)