本文收集1975年元月1日至1980年12月31日六年来西安中心医院病理活检材料50岁以上老人的肿瘤共1789例,其中良性瘤270例,恶性肿瘤1519例,两者共占全部活检的39%。本文主要就恶性肿瘤加以分析,其中男性843例,女性676例,男:女=5:4。老人恶瘤虽随年龄增长而发病率上升,但70岁后则渐趋下降。本组癌瘤1450例,肉瘤37例,两者之比为40:1。男性以消化器官为主,女性以生殖器官为主; This article collected 1789 cases of tumors over 50 years of age in biopsy materials of Xi’an Central Hospital from January 1, 1975 to December 31, 1980, including 270 benign tumors and 1,519 malignant tumors, which together accounted for all biopsies. 39%. This article mainly analyzes malignant tumors, including 843 males and 676 females, male: female = 5:4. Although the incidence of malignant tumors in the elderly increases with age, it declines after age 70. The group had 1,450 cancers and 37 sarcomas with a ratio of 40:1. Males mainly have digestive organs and females mainly have reproductive organs.