. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. UTERUS — (ABNORMAL ANATOMY). (i'JI sition. Fibroid growths retained within the uterine walls, are at first almost invariably spherical, but in course of growth become ovate or flattened. Those which project from the outer surface are usually nearly round, while the polypi of the cavity, and those which extend into the vagina, are pyriform, and possess longer or shorter peduncles. The greater part proceed from the fundus, com- paratively few from the walls of the body, and scarcely any of this kind from the cervix. The la
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. UTERUS — (ABNORMAL ANATOMY). (i'JI sition. Fibroid growths retained within the uterine walls, are at first almost invariably spherical, but in course of growth become ovate or flattened. Those which project from the outer surface are usually nearly round, while the polypi of the cavity, and those which extend into the vagina, are pyriform, and possess longer or shorter peduncles. The greater part proceed from the fundus, com- paratively few from the walls of the body, and scarcely any of this kind from the cervix. The latter are usually of a more spongy or cellular character than the former, which con- sist of a denser fibrous tissue. The power of growth of fibroid tumours appears to be nearly unlimited. The known extremes in such cases are, in point of num- ber, from one to forty ; and in respect of weight, from a few grains to seventy pounds. Fibroid exercises a considerable influence upon the form and position of the uterus. Tumours within, or external to it, change the position of the organ in various ways, pro- ducing elevation, prolapsus, lateral obliquity, and especially retroversion, according to the seat which they occupy. Polypi distend the cavity of the body and cervix, and the os uteri, and sometimes produce prolapsus and inversion of the uterus. The influence of fibroid upon the thickness of the uterine walls is also considerable. Ge- nerally a marked hypertrophy, equal some- times to that of pregnancy, takes place, while in parts a thinning of the walls occurs. The latter is especially observable in cases where the tumours are numerous, as in Jig. 4-76. These sometimes appear to grow at the ex- pense of the whole uterine substance, so that the original organ is with difficulty discovered among the hypertrophied mass. Fig. 77<e uterus surrounded by outgrowths of fibroid which have pushed the peritoneum before them, several having become pedunculated. (Ad Nat.) The uter
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