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Fig. 1 | BMC Gastroenterology

Fig. 1

From: Laennec’s approach for laparoscopic anatomic hepatectomy based on Laennec’s capsule

Fig. 1

Histological findings of Laennec’s capsule in the liver Tissues in different areas were subjected to hematoxylin and eosin (h&e) (a, d, g, j), resorcinol-fuchsin (r&f) (b, e, h, k), and smooth muscle actin (SMA) staining (c, f, i, l), such as the naked area (a-c), and around the Glissonean pedicle (d-f), hepatic vein wall (g- i), and inferior vena cava (IVC) (j-l). The H&E staining results of the naked area, Glissonean pedicle, hepatic vein, and IVC are shown in (a), (d), (g), and (j). The thin fibrous layer on the surface of the liver parenchyma marked with arrows is Laennec’s capsule. The R&F staining results of the naked area, Glissonean pedicle, hepatic vein and IVC are shown in (b), (e), (h), and (k). The elastic fibers are stained light violet (arrows). SMA staining results of the naked area, Glissonean pedicle, hepatic vein, and IVC are shown in (c), (f), (i), and (l). Laennec’s capsule was positive for SMA staining at the different sites (arrows). Laennec’s capsule was observed on the naked area (a-c), and around the Glissonean pedicle (d-f), hepatic vein wall (g-i), and IVC (j-l). F and I show the artery and thin branches of the hepatic vein (asterisks). The immunoreactivity was positive not only in the arterial wall, but also in the vascular endothelium of the thin branches of the hepatic vein (asterisks). All staining images were taken at 100× magnification.

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