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. 2012 Nov;8(4):310–326. doi: 10.2174/157340312803760721

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© 2012 Bentham Science Publishers

This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.5/), which permits unrestrictive use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. (7) — (A) Low-magnification photomicrograph of superior caval vein (SCV), myocardial sleeves (arrows), right atrial appendage (RAA) and sinus node (SN). RS, right superior pulmonary vein, RCA, right coronary artery (B) Sagittal section of the superior caval vein with trichrome staining. Note the overall architecture of the sinus node (SN) with a radiation located in the superior caval vein (SCV). (C) Histological cross-sections of superior caval vein with trichrome stain showing degenerative changes in a myocardial sleeve in a specimen without history of atrial fibrillation. These changes were more marked in the periphery parts of the myocardial sleeve. (D) The same structural features in C but in a specimen with history of atrial fibrillation.