. A manual of gynæcology and pelvic surgery, for students and practitioners. rdinarilyknown as fibroids, are probably the most common tumors ofthe human body. It is said (Hirst) that 20 per cent, of allwomen have fibroids. Etiology.—The causative factors in the production of fibroidtumors are wholly unknown. They make their appearanceduring the active sexual life of the patient, are rare duringits early years, become progressively more common during thethird and fourth decades, and sometimes disappear spon-taneously with the diminished nutrition of the uterus at andafter the menopause. Fibroid


. A manual of gynæcology and pelvic surgery, for students and practitioners. rdinarilyknown as fibroids, are probably the most common tumors ofthe human body. It is said (Hirst) that 20 per cent, of allwomen have fibroids. Etiology.—The causative factors in the production of fibroidtumors are wholly unknown. They make their appearanceduring the active sexual life of the patient, are rare duringits early years, become progressively more common during thethird and fourth decades, and sometimes disappear spon-taneously with the diminished nutrition of the uterus at andafter the menopause. Fibroids are relatively more common incolored women and in sterile women of both races. Pathology.—-Primarily fibroids are composed of precisely thesame histologic structures as is the uterine wall, and althoughconnective tissue is not lacking in myomatous tumors nor mus-cj(^ in fibromata, the preponderance of muscle tissue in onetumor and of connective tissue in the other leads to their differ-entiation as myomata and fibromata respectively. 228 DISEASES OF THE UTERINE BODY. Fig. 104.—Interstitial fibro-myoma growing in fundus and surrounded on allsides by muscle of uterine wall. UTERINE FIBRO-MYOMATA 229 The growths may vary in size from the tiniest seedlingsto huge tumors which almost fill the abdominal cavity. Theyare enclosed in a dense fibrous capsule into which the nutritivevessels penetrate. Their starting point is within the substance of the uterinewall (whether from the vessel walls or elsewhere is not definitely


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