A SACCULATED ANEURYSM

(AFTER WEDER [A, 319].) 4a, b, the adventitia and intima, cons tituling the exc; c, the muscular is, present only at the opening of communication. rysmesacciforme. Ger., sachformiges Aneurysm a. It, Sp. aneurism a sacciforme, A form in which the tumor is distinctly pouch shaped, abruptly defined, and invoiving only a portion of the circumference of the artery. [Le Fort (D, 92).|—Sacenulated eyllndrical a. A saccuiated a. with something of the cylindrical shape. [J. S. Hughson, “Trans. of the S. Carolina Med. A oc.,” viii, 1876, p. 1 (D).] — Saceulated varicose a. Fr., anévrysme variqueux sacciforme. A varicose a. of a distinct saccular form. OI (D, 92).]—Secondary a. One that has apparently been cured, but, after the lapse of some months, shows recurrent pulsation: considered to be due to unusual freedom of the collateral circulation. 4 419.] Cf. ANÉVRYSME de transition —Spherical a. See Sacculated a.—Spontaneous a. Lat., aneurysm a spontaneum. Fr., anévrysme spontané. Ger., spontanes Aneurysm a. It., aneurism a spontaneo. Sp., aneurism a espontdneo. Any a, not of traumatic origin, [Richet'(D, 93).] — Spurious a. See False a. — Subelavicular a. Fr., anévrysme sous-clavicula ire. An a. of the axillary artery situated too high to admit of ligation of the ve el below the clavicle. [Bégin (D, 96).]—Surgieal a. See External a, (ist def.).—Thoracic a. Ana. of the thoracic aorta. [A, 411.] — Transition a. See ANÉVRYSME de transition. — Traumatic a. Lat., aneurysm a traumaticum. Fr., anévrysme traumatique. Ger., traumatisches Aneurysm a. It., aneurism a traumatico. Sp., aneurism a traumâtico. An a. due to mechanical injury to an artery. As generaily used. the term does not include cases in which an a. forms as the ultimate result of partial tearing or weakening of the artery, but only those in which it is the immediate consequence n of a manifest wound or rupture. Such a’s are of the consecutive variety. [T. Holmes (A, 364).J—True a. Lat., aneurÿsma verum. Fr., anévrysme vrai. Ger., wahres (oder echtes) Aneurysm a. It., aneurism a vero. Sp., aneurism a verdadero. 1. One in which the sac is formed by all the coats of the artery. [E.] 2. As used by recent writers, one in which the sac is formed of one, two, or all three cf the arterial coats, as distinguished from a consecutive a. [T. Holmes (A, 364); A, 411.] — Tubular a. See Cylindroid a:—Valvnlar a. See A.of the valves of the heart.—Varicose a. Lat., aneurysm a varicosum. _ Fr., anévrysme variqueux. Ger., varicôses Aneurysm a. It., Sp., aneurism a varicoso. An a., either traumatic or spontaneous, consisting in the communication of an artery with a vein through the medium of a distinct sac formed between the two. [D, 12; E.]— Venous a. Lat., aneurysm a venosum. See Varicose a.—Verminous a. Lat., aneurysm a verminosum. Fr., anévrysme vermineux, It.,Sp., aneurism a vermiroso. An a. containing parasites. It has been observed in the mesenteric artery of the horse,