Morphology of arteries, veins, and capillaries in cancer of the larynx: scanning electron-microscopical study on microcorrosion casts.

Morphology of blood vessels in cancer of the larynx, which as other solid tumors has great neoangiogenic abilities, was studied on microcorrosion casts in SEM. Most evident changes of the endothelial patterns were seen on the casts of capillaries, venules, and veins. Capillaries, especially the newly formed, are the most numerous constituent of the vascular bed in all zones of cancer of the larynx.

Scanning electron microscopic studies on blood vessels in cancer of the larynx.

The injection replication method was used in a study of the vascular system in cancer of the larynx. Following maceration, clean microcorrosion casts of the blood vessels of larynx cancer were examined in a scanning electron microscope (SEM). The effective filling of the whole vasculature, including its finest capillaries, makes it possible to obtain really three-dimensional pictures of the tumor blood vessels in the SEM.

Scanning electron microscopical study of tracheal vascularization in guinea pig.

In view of a considerable increase of the tracheal injuries brought about by intubation, further detailed information on microcirculation of the trachea is needed. For this purpose, the normal microvascularization of the guinea pig trachea was investigated in microcorrosion casts viewed in a scanning electron microscope. The trachea is supplied by longitudinal vascular bundles running at both sides of the organ, including both longitudinal tracheoesophageal arteries and veins.