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  • region
  • 4 Changes in incidence, diagnostic fashions, and referral pathways may have occurred over time, because in 1970 Harrison found 60% of hypopharyngeal carcinomas arising in the postcricoid region in his practice in London, UK. (bmj.com)
  • Site
  • For multiple neoplasms of the same site that are not contiguous, such as tumors in different quadrants of the same breast, codes for each site should be assigned. (icd10data.com)