The anatomical record . inus it received the vena cordis media. No rr>mnantof a connection could ho found upon the l)lind sinus end or theriglit atrial wall. Upon tracing the anomalous vena cava up-ward it was found to ojien into the left innominate vein at thepoint where this vein joined with the right to form the nonnalsuperior vena cava (fig. 1). In the upiM>r third of its extent theleft superior vena cava received the sujx^rior intercostal vein,which was coTuposed of two intercostal branches. Ui)on examining the ulterior of the right atrium, no trace ofan o]x>ning of the coronarj
The anatomical record . inus it received the vena cordis media. No rr>mnantof a connection could ho found upon the l)lind sinus end or theriglit atrial wall. Upon tracing the anomalous vena cava up-ward it was found to ojien into the left innominate vein at thepoint where this vein joined with the right to form the nonnalsuperior vena cava (fig. 1). In the upiM>r third of its extent theleft superior vena cava received the sujx^rior intercostal vein,which was coTuposed of two intercostal branches. Ui)on examining the ulterior of the right atrium, no trace ofan o]x>ning of the coronarj sinus was seen. However, the wall 4(> S. n. (iRANT hrn* was thin. No TlulKsinii valvo was prrsent. The valveof the inferior vena cava, howcMT, was well (level<»|)eeCat, Beyerlein and Hutton—of anomalies similar tothe one under consiiieration. According to Marshall (50), W. ^fien. D, y^non S. Fig. 1 The heart and vessels viewed from the left and dorsaliy. It showsthe course of the coronary sinus and left superior vena cava. Enlarged one-half. I^eCat ol)st>rved (17.^S) a coronary vein which emptied into theleft subclavian vein in an eight days old child. Hutton (15) found a case in which the coronarj sinus endedin a sunken pitted area against the wall of the right th(> riglit atrium there was a shallow circular deiiressionc(jrrespt)nding to the coronary oix-ning. There was no Thebesianvalve, but a considerable remnant of the left venous suggested two explanations of the closure of the coron-ary sinus. The partition between the sinus and atrium waseither; first, a composite structure, the result of fusion between VENA CAVA DRAINING CORONAKY SINUS 47 tli< coronury scfniKnts of the ri^lit hikI left vonous valves; or,socomi, tho rosiilt of an unusually voluminous riwlxsian valvp,which ha<l cvcnlually fusod with tho marRins of the ostium of
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1906
