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- Title
Determination of the positional relationship of the second Houston valve and peritoneal reflection using computed tomographic colonography and magnetic resonance imaging.
- Authors
Murai, Shin; Kawai, Kazushige; Nozawa, Hiroaki; Sasaki, Kazuhito; Murono, Koji; Emoto, Shigenobu; Yokoyama, Yuichiro; Abe, Shinya; Nagai, Yuzo; Sonoda, Hirofumi; Ishihara, Soichiro
- Abstract
Purpose: The second Houston valve is used as a surrogate for estimating the position of the peritoneal reflection; however, the concordance between the positions of the valve and peritoneal reflection has not been investigated. This study aimed to clarify this positional relationship. Methods: The second Houston valve and peritoneal reflection positions were assessed using tomographic colonography and magnetic resonance imaging. In total, 117 patients were enrolled in this study. Results: The positions of the second Houston valve and peritoneal reflection were nearly concordant, although the space between them ranged from − 20.7 to 33.9 mm. A peritoneal reflection located further from the anal verge than the second Houston valve was defined as a shallow peritoneal reflection. Male sex, high body weight, and a high body mass index were significantly correlated with a shallower peritoneal reflection, as determined by a univariate analysis (sex: P = 0.0138, weight: P = 0.0097, body mass index: P = 0.0311). A multivariate analysis revealed a significantly shallower peritoneal reflection in males than in females (odds ratio: 2.75, 95% confidence interval: 1.15–6.56, P = 0.023). Conclusions: The second Houston valve located near the peritoneal reflection can be a useful surrogate marker for estimating its position. In relatively heavy males, the peritoneal reflection is located more cranially than the second Houston valve.
- Subjects
HOUSTON (Tex.); MAGNETIC resonance imaging; VIRTUAL colonoscopy; VALVES; BODY mass index; BIOMARKERS
- Publication
Surgery Today, 2023, Vol 53, Issue 5, p614
- ISSN
0941-1291
- Publication type
Article
- DOI
10.1007/s00595-022-02615-3