A case of multiple primary cancers in the gingiva of the mandible and the rectum with branchial cyst.

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A case of multiple primary cancers was reported in this paper. One lesion arised in left mandibular molar gingiva to oral floor and another one subsequently in rectum, in a 58-year old woman with branchial cyst on her left neck. The patient came to our University Hospital with complaint of painless mass of left upper neck and the delay in healing of extracted wound on left lower molar region. The oral lesion was histologically proved to be squamous cell carcinoma by biopsy and servical lesion was considered to be branchial cyst by clinical symptoms. Both were treated by surgical operation. Oral cancer was treated by antitumor agent and radiation. Six months later, adenocarcinoma of rectum was found and was treated at the surgical department by surgical method and antitumor agent. Up to now, there is no evidence of recurence in either foci.
社団法人日本口腔外科学会の論文