title: Age-related changes in the human renal veins and their valves.
abstract: Age-related anatomical changes in the human renal veins and their valves were studied. The principal changes were: 1. The muscle fiber bundles were noted to progressively atrophy as a function of age, while conservely the elastic fiber bundles hypertrophied. 2. The valves of the renal veins were observed to become gradually thicker with age as a result of the increased number of collagen fiber bundles.
authors.affiliation: Department of Anatomy, University of São Paulo, Brazil.
authors.forename: R P
authors.initials: RP
authors.lastname: Chopard
authors.forename: M H
authors.initials: MH
authors.lastname: Miranda Neto
authors.forename: W
authors.initials: W
authors.lastname: Biazotto
authors.forename: S L
authors.initials: SL
authors.lastname: Molinari
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009131:Muscle, Smooth, Vascular / Q000033:anatomy & histology / Q000166:cytology; D012082:Renal Veins / Q000033:anatomy & histology* / Q000166:cytology