Identification of endoscopic predictors of biliary malignancy during digital cholangioscopy.

OBJECTIVES: Biliary brushings and biopsies obtained during endoscopic retrograde cholangiopancreatography (ERCP) have a low sensitivity for the diagnosis of malignant biliary strictures. While cholangioscopic analysis is useful, visual criteria have not yet been defined. The aim of this study was to identify visual criteria for the diagnosis of indeterminate biliary strictures (IDBS). METHODS: A multicenter study was conducted based on the analysis of cholangioscopic recordings of IBDS. Diagnostic criteria were identified in a study group and verified in a validation group. RESULTS: Four criteria were identified to be associated with malignancy, one negatively ("endobiliary material," odds ratio [OR] 0.62, 95% confidence interval [CI] 0.41-0.92) and three positively ("vascularized villous projections," OR 1.52, 95% CI 1.03-2.24; "twisted or dilated vessels," OR 2.18, 95% CI 1.47-3.24; and "dark color of the mucosa," OR 1.82, 95% CI 1.23-2.70). Between two playbacks, the mean (95% CI) sensitivity of the observer's visual diagnosis increased from 66.1% (60-72) to 73.8% (69-78) (P = 0.004); in the second playback, the kappa value for interobserver agreement ranged between 0.36 (color) and 0.56 (endobiliary material), with a significant improvement (P = 0.0031-0.0001) between the first and second playbacks. Blind assessment by endoscopists not involved in this study had a diagnostic accuracy of 73% (71.4-74.5). CONCLUSION: The four identified cholangioscopic features are easy to implement in clinical practice and have the potential to increase the level of diagnostic confidence during the workup of IDBS.

A prospective comparison of breast sensibility after reduction mammoplasty: Superior versus superomedial pedicle.

BACKGROUND: Breast sensitivity is a significant issue in preoperative consultation prior to reduction mammoplasty. Although a range of techniques is used, recovery of sensation is usually evaluated using the inferior pedicle. Our objective was to evaluate and compare the change in breast sensitivity using the superomedial versus the superior pedicle. METHODS: We performed a non-randomized, monocentric, prospective study. Thirty-six patients were examined by a single evaluator with von Frey monofilaments on the day prior to the surgery, at 3-6 months, and at 1 year postoperatively. The breast skin, areola, and nipple sensitivity were tested. The breasts were classified into two groups depending on whether the superior pedicle (S) or the superomedial pedicle (SM) technique was used. RESULTS: The differences between the two groups indicate that the SM group had better sensitivity at 4.5 and 12 months postoperatively. The thresholds for the size filaments that could be felt at the first follow-up on the skin, the areola, and the nipple for the S group vs. the SM group were 2.55 vs. 2.41 (p = 0.41), 4.57 vs. 4.45 (p = 0.28), and 4.17 vs. 3.81 (p = 0.04) size units, respectively. At 1 year postoperatively, the respective values were 2.62 vs. 2.52 (p = 0.49), 4.28 vs. 4.05 (p = 0.04), and 3.63 vs. 3.38 (p = 0.10). CONCLUSION: The nerve fibers appear to be better preserved in the superomedial pedicle than in the superior pedicle. However, these differences were not clinically relevant. The choice of the technique should be made on the basis of the size and the shape of the breast, the patient morphology, and the operator's preference rather than being on the basis of the recovery of sensitivity.