During the past decade the gynecologic literature has become heavily laden with discussions of the theories as to the nature and pathogenesis of endometriosis. Owing to the rarity of vesical endometriosis, a report of this case would seem to be warranted. Thirty cases of endometriosis of the urinary bladder have been found in the literature, but of these only twenty-one belong to the so-called primary group.
The genesis of endometriosis, as well as its mode of dissemination, is still an unsettled question. Briefly summarized, the more important of the theories may be arranged as follows:
Origin from the normal endometrial tissue of the genital tract.
Proliferation in continuity through the walls of the uterus and tubes (Cullen,1 1896).
Lymphogenous metastasis (Halban,2 1924).
Propagation by retrograde menstruation (Sampson,3 1921).
Origin from embryonic remnants in the genital tract.
The wolffian ducts (von Recklinghausen,4 1895).
HENRIKSEN E. PRIMARY ENDOMETRIOSIS OF THE URINARY BLADDERREPORT OF ONE CASE. JAMA. 1935;104(16):1401–1403. doi:10.1001/jama.1935.02760160025008
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