Functional Activity of Smooth Muscle Tumors of the Uterus. ∗

Summary and Conclusions

Tissues from 16 leiomyomas were tested for contractility using normal uterine muscle for control. The stimulating substances used were pituitrin, histamine, and ergot.

In 11 cases the tumor tissue showed definite response. Uterine muscle usually showed increasing tone in the dying phase while the tumor tissue became unresponsive without change in tone.