A system of surgery . ligaturedabove and below its communication with the vein. In a case of aneurysmal varix in Hunters canal Mr. Lawson tiedthe artery above and below the communication with the vein, and the»patient made a rapid and complete recovery. In the days when thisaffection was more common such an operation was fraught withclangers from which it can now be guarded, and therefore it wasrarely resorted to. Now that the dangers can be avoided theoperation is more readily and more often recommended. Varicose aneurysm. Causes.—The most frequent cause ofan aneurysm with a communication wit
A system of surgery . ligaturedabove and below its communication with the vein. In a case of aneurysmal varix in Hunters canal Mr. Lawson tiedthe artery above and below the communication with the vein, and the»patient made a rapid and complete recovery. In the days when thisaffection was more common such an operation was fraught withclangers from which it can now be guarded, and therefore it wasrarely resorted to. Now that the dangers can be avoided theoperation is more readily and more often recommended. Varicose aneurysm. Causes.—The most frequent cause ofan aneurysm with a communication with a vein (Fig. 183) is the simul-taneous injury of an artery and vein—usually a stab, puncture, gun-shot, or phlebotomy wound. In place of the wounds in the twovessels being sealed up, or cohering together, a circumscribed trau-matic aneurysm develops between them, which communicates withboth. An aneurysmal varix may slowly develop into a varicoseaneurysm if the tissue uniting the two vessels yields. But such an. Fig. 183.—Varicose Aneurysm at Elbow. (After Erichsen.) a, Ulnar artery; b, aneurysm partly filled with clot; c, dilatation of median basilic vein. VARICOSE ANEURYSM. 637 aneurysm may develop spontaneously by an ordinary idiopathicaneurysm first compressing and then opening into a neighbouringvein. This has been known to occur in the thorax, abdomen, andgroin. (See Fig. 184.) PatE*ology.— The only difference between this condition and acircumscribed traumatic aneurysm arises from the fact that the sachas an additional opening or openings into it from a vein or relative position of the arterial and venous openings into thesac varies much. A case is recorded in which two veins communi-cated with the sac of an aneurysm, so that on laying it open fourvenous openings were detected. A still more interesting case is onein which the deep wound in a transfixed vein cohered with that inan artery; but the superficial wound in the vein did not heal up,and the bl
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