. Clinical gyncology, medical and surgical. Cavernous angioma of uterus, half size. 584 BENIGN NEOPLASMS OF THE UTERUS. The blood was not uniformly distributed throughout the veins, some ofwhich showed clots consisting mainly of red blood-corpuscles and compara-tively little fibrin; other cavities, on the contrary, held a good deal of fibrinand serum, but not many red blood corpuscles. This peculiar fact may beaccounted for by the circumstance that the blood did not enter all the veinsof the tumor, a number of veins being partially or completely obliterated,and consequently presenting an obsta
. Clinical gyncology, medical and surgical. Cavernous angioma of uterus, half size. 584 BENIGN NEOPLASMS OF THE UTERUS. The blood was not uniformly distributed throughout the veins, some ofwhich showed clots consisting mainly of red blood-corpuscles and compara-tively little fibrin; other cavities, on the contrary, held a good deal of fibrinand serum, but not many red blood corpuscles. This peculiar fact may beaccounted for by the circumstance that the blood did not enter all the veinsof the tumor, a number of veins being partially or completely obliterated,and consequently presenting an obstacle to the circulation of the blood evenwithin the permeable portions. With high powers of the microscope theendothelial wall of the permeable cavities could be seen without difficulty :hence the tumor was regarded as a cavernous angioma. The appearance ofthe tortuous arteries at the border of the tumor was that of the condition. C, C, cavernous veins filled with blood and coagulated fibrin; I, 7, interstitial fibrous connectivetissue; B, capillary blood-vessels in the interstitial tissue; S, light highly refracting rims along thewalls of the veins; 0, obliterated blood-vessel marked by clusters of pigment. described by pathologists as waxy degeneration. The interstitial connectivetissue contained at different points a dark yellow-brown pigment which wasprobably the outcome of previous extravasations of blood. In other por-tions there were larger masses of pigment clusters, which, from the con-figuration of the fields holding such pigment, were considered as the residuesof obliterated cavernous veins. The large venous cavities penetrated intothe muscle wall of the uterus, as already stated. The tortuous arteries andthe enlarged capillaries were most numerous at the periphery of the was no distinct boundary-line between the peripheral cavernous veinsand the adjacent muscle tissue, which latter borde
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