. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 690 UTERUS AND ITS APPENDAGES. mass, so that a muscular rather than a fibrous it may be easily detached and turned out of tissue results. A small quantity of clastic its investing capsule (/%. 475 ). fibre is also occasionally found in these ute- rine formations. Fig. 475. Fig. Section of fibroid tumour of the uterus. (Ad Nat.) The structural variations observable in fibroid of the uterus, are dependent chiefly upon the peculiarities in arrangement of these component elements. In the more dense formations, the whi
. The cyclopædia of anatomy and physiology. Anatomy; Physiology; Zoology. 690 UTERUS AND ITS APPENDAGES. mass, so that a muscular rather than a fibrous it may be easily detached and turned out of tissue results. A small quantity of clastic its investing capsule (/%. 475 ). fibre is also occasionally found in these ute- rine formations. Fig. 475. Fig. Section of fibroid tumour of the uterus. (Ad Nat.) The structural variations observable in fibroid of the uterus, are dependent chiefly upon the peculiarities in arrangement of these component elements. In the more dense formations, the white shining fibrous bands enclosing little pellets of the browner sub- stance, form numerous small compact masses, which are again closely united together by a somewhat looser fibrous tissue that serves to combine the whole into lobes or lobules, va- rying in size from a pea to that of a man's head. The variation in density of these masses depends, further, upon their vascula- rity. In the softer kinds, bloodvessels that may be injected permeate the mass, running along the bands and layers of fibrous tissue connecting the lobules. Such tumours are sometimes of a deep red colour. The denser masses, on the other hand, are apparently nearly bloodless ; at least, injections cannot be made to penetrate them. The different configurations which these masses of uterine fibroid assume, appear to depend in a great measure upon accidental conditions. In this particular three varieties may be noticed. 1st var. Interstitial fibroid. — The mass here forms a growth, sometimes of immense size, but still contained within the proper boundaries of the organ, occupying one or other uterine wall, but -neither encroaching upon the uterine cavity, nor protruding ex- ternally. Such is the case represented in Jig. 475., in which the external appearances were those of the ordinary gravid uterus in the seventh month. Such masses appear oc- casionally at their periphery to merge gra- dually into the hea
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