collision tumor in the hypopharynx a case report

• DOI: 10.13201/j.issn.1001-1781.2019.08.024
• Publication Date: 2019-08-01
• Authors: Shen H; Zhao Nm; Wen F
• Keywords: Hypopharynx; Hypopharyngeal Neoplasms; Humans

SummaryA collision tumor consists of two different histologically distinct and topographically independent tumors merging in the same mass. In the head and neck area, they are rare and only a few cases have been reported in the hypopharynx. It is difficult to choose to treat this disease.