. The pathology and treatment of diseases of the ovaries. enters the inferior vena cavaat an acute angle, and on the left side the vein joins the renalvein at a right angle. It has long been known that, in the male, varicocele is muchmore frequent on the left side than on the right, and the expla-nation usually given of it was the pressure which is, or may be,exercised on the left spermatic vein by a loaded rectum. Amuch more exact explanation has resulted from a careful study 8 DISEASES OF THE OVAKIES. of these veins by Dr. J. H. Brinton, of Philadelphia. His deduc-tions from a carefully made
. The pathology and treatment of diseases of the ovaries. enters the inferior vena cavaat an acute angle, and on the left side the vein joins the renalvein at a right angle. It has long been known that, in the male, varicocele is muchmore frequent on the left side than on the right, and the expla-nation usually given of it was the pressure which is, or may be,exercised on the left spermatic vein by a loaded rectum. Amuch more exact explanation has resulted from a careful study 8 DISEASES OF THE OVAKIES. of these veins by Dr. J. H. Brinton, of Philadelphia. His deduc-tions from a carefully made series of inquiries result in the fol-lowing : 1. That the causes hitherto assigned are insufficient to accountfor the rare occurrence of varicocele on the right side. 2. That the cause of this non-occurrence is to be referred tothe existence of a very perfect valve, hitherto unnoticed, at thetermination of the right spermatic vein in the vena cava. 3. That no such valve exists upon the left side, at the junc-tion of the spermatic with the renal Fia. 3.—Dissection of the vena cava, emnlgent and ovarian veins, showing the right ovarian valvo:a, right ovarian vein; /, left ovarian vein, without valve : v, valve ; «, sinus in front of valve. 4. That a similar valve exists in the analogous vein of thefemale—the right ovarian vein—but that there is none on theleft side. (See Fig. 3.) In this I think there is only one error to be noted : that is,that Dr. Brinton believes these valves have not before been no- ANATOMY AKD PHYSIOLOGY OF THE OVARY. 9 ticed. This is not correct, for in the third edition of Grays• Anatomy (1864), now before me, it is distinctly stated that thespermatic veins have valves. Dr. Brintons merit consists ratherin showing that the left vein has not a valve, whilst tlie rightvein is provided with one. The physiological fact we have further to bear in mind con-cerning these veins is that during pregnancy they increase enor-mously in size. These fac
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectovarian, bookyear1883
