Although observance of double cancer in our field in not necessarily frequent, occasianal cases have been reported in recent years. We have recently encountered 3 clinical cases of double cancer involving the bladder and the maxilla in one case and the larynx in2 cases.
These cases are presented together with a statistical observation of such occurrences.
The types of cancer in our cases consisted of epithelioid carcinoma of the maxillary sinus and papillary transitional epithelial carcinoma of the bladder in a 69-year-old man, squamous cell carcinoma of the larynx and primary adenocarcinoma of the stomach in a 60-year-old woman, and squamous cell carcinoma of the larynx and adenocarcinoma of the stomach in a 66-year-old man.