Orbital lymphatic vessels: immunohistochemical detection in the lacrimal gland, optic nerve, fat tissue, and extrinsic oculomotor muscles

ABSTRACT Purpose: To identify the lymphatic vessels in orbital specimens from human cadavers using light microscopy and immunohistochemical analysis. Methods: A postmortem study included 10 cadavers. The were obtained no later than 12 hours after death. dissected into lacrimal gland, optic nerve, fat tissue, oculomotor muscles. histologic criteria to qualify as a vessel thin-walled channels of endothelium without well-developed basal membrane with an erythrocyte-free, irregular lumen. irregularly shaped, lumen immunopositivity for podoplanin D2-40. Results: extraocular muscle sections positively stained Conclusions: This demonstrated orbit, more precisely, dura mater adipose extrinsic muscles via immunohistochemistry.