用电镜观察临床上主要表现为功能减退(12例)、闭经-泌乳(7例)、肢端肥大(11例)垂体腺瘤的超微结构,重点分析了瘤细胞中线粒体的状态并做简要探讨。本组单纯表现功能减退的垂体瘤12例,其中6例含中到大量线粒体,为瘤细胞瘤性改变。肢端肥大症11例,含中到大量线粒体者3例(27.3％)。闭经-泌乳综合征7例中来发现瘤细胞瘤性改变。瘤细胞瘤性改变的 The ultrastructure of pituitary adenomas was mainly observed in the clinical manifestations of hypofunction (12 cases), amenorrhea-lactation (7 cases), and acromegaly (11 cases). The status of mitochondria in tumor cells was analyzed and briefly analyzed. Explore. In this group, 12 cases of pituitary adenomas with only hypofunction were observed, of which 6 cases contained moderate to large amounts of mitochondria. There were 11 cases of acromegaly and 3 cases (27.3%) with moderate to large mitochondria. Amenorrhea-progesteremia syndrome was found in 7 cases to detect neoplastic changes. Tumor cell neoplastic