原发性多发性癌是同一机体的单个或多个器官组织发生二个以上的原发性癌。Billroth氏1869年首先报告以来,至今国内外已有多例报告。因它常与转移癌、复发癌相混淆,临床鉴别诊断常有困难。今将我院收治的一例报告如下。 Primary multiple cancer is the occurrence of two or more primary cancers in single or multiple organ tissues of the same organism. Since Billroth's first report in 1869, many cases have been reported at home and abroad. Because it is often confused with metastatic cancer and recurrent cancer, clinical differential diagnosis is often difficult. Here is an example of a report from our hospital.