. Medical and surgical therapy . Fig. 15.—Diagram showingarterio-venous iwo vessels areunited by a small fibrouscanal. Fig. 16. — Diagram showingarterio-venous aneurism withan intermediate sac. extensive. Moreover, the haematoma is soon boundedby an inflammatory wall, the formation of which is nothindered, as it is in arterial haematoma, by the pulsa-tion of the blood. Thus the brief stage of diffusehaematoma gives place to that of an encysted haema-toma, the centre of which is a channel of com-munication between the artery and vein. In thesimplest cases the intermediate haematoma
. Medical and surgical therapy . Fig. 15.—Diagram showingarterio-venous iwo vessels areunited by a small fibrouscanal. Fig. 16. — Diagram showingarterio-venous aneurism withan intermediate sac. extensive. Moreover, the haematoma is soon boundedby an inflammatory wall, the formation of which is nothindered, as it is in arterial haematoma, by the pulsa-tion of the blood. Thus the brief stage of diffusehaematoma gives place to that of an encysted haema-toma, the centre of which is a channel of com-munication between the artery and vein. In thesimplest cases the intermediate haematoma undergoesprogressive retraction, until operation shows only asmall fibrous canal, about half an inch in length, uniting 18 WOUNDS OF THE VESSELS the two vessels (fig. 15). In other cases the vesselsare united by a true sac, the wall of which becomesgradually isolated and differentiated until it can beremoved in its entirety (fig. 16). Finally the conditionsare very much complicated by dilatation of the centralend of the vei
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsurgery, bookyear1918
