RENAL MEDULLARY LYMPHATICS: MICRORADIOGRAPHIC, LIGHT, AND ELECTRON MICROSCOPIC STUDIES IN PIGS

JT Cuttino, Jr., JC Jennette, RL Clark, L Kwock

Abstract


Although renal cortical lymphatics have been extensively
studied, the existence of renal medullary
lymphatics has not been well documented. We
studied renal microlymphatics in pig kidneys by
retrograde ureteral injection of barium-sulfate-gelatinsaline
mixture. Lymphatics filled as a result of forniceal
rupture and interstitial extravasation.
Microradiographs were correlated with histology and
electron microscopy.
We traced renal microlyrnphatic vessels from the
arcuate level not only into the cortex but also into
the pyramidal region, and therefore concluded that
medullary lymphatics existed.


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