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Renal Lobulation—A Benign Macroanatomical Variation?

Authors :
Serghei Covantsev
Oleg Arnaut
Karina Mulaeva
Olga Belic
Source :
Anatomia, Vol 2, Iss 4, Pp 336-345 (2023)
Publication Year :
2023
Publisher :
MDPI AG, 2023.

Abstract

Introduction: Renal lobulation (also known as fetal or embryonic lobulation) is a rare variation during development in which renal lobules have a visible anatomical space between them, and this can be seen in 0.5–4% of adults. Material and methods: this study was conducted on 54 human kidneys from patients who died due to causes unrelated to renal pathology which were fixed in a 10% formaldehyde solution and then carefully dissected. Results: The group with fetal lobulation (n = 16) was associated with a length M = 9.89 (SD = 0.6, p = 0.15). By comparison, the kidneys without lobulation (n = 38) were associated with a numerically longer length M = 10.29 (SD = 0.607, p = 0.098). To test the hypothesis that lobulation is associated with a statistically significant different length a Mann–Whitney test was performed, which indicated that the length of the kidneys is smaller in scase of lobulation U = 198, Z = −2.04, p = 0.04. Cross-tabulation also demonstrated that kidney lobulation may be influenced by the presence of polar arteries with r = 0.41 (p < 0.02). The likelihood ratio was 7.28, df 1, p = 0.003, with an odds ratio of 6.857 (CI 95% = 1.84–25.61). Logistic regression analysis demonstrated that kidneys with lobulation were 6.85 times more likely to have polar arteries than kidneys without lobulation. Conclusions: the data from our research indicate that even though no pathological conditions have been linked with lobulated kidneys, the incidence of vascular variations (specifically polar arteries) is higher when there is persistent fetal lobulation.

Details

Language :
English
ISSN :
28130545
Volume :
2
Issue :
4
Database :
Directory of Open Access Journals
Journal :
Anatomia
Publication Type :
Academic Journal
Accession number :
edsdoj.76c83bbd542470cbd40c49280394bc4
Document Type :
article
Full Text :
https://doi.org/10.3390/anatomia2040030