Fig 1.
Non-neoplastic polyps: Fibromyoglandular polyp (A), cholesterol polyp (B), inflammatory polyp (C) and polypoid pyloric gland metaplasia (D) (Hematoxylin&eosin, 10x magnification).
Fig 2.
Neoplastic polyps: Incipient intracholecystic neoplasm (<1 cm by definition) (A), intracholecystic neoplasm (B), polypoid invasive adenocarcinoma (C) and non-neoplastic polyp (in this case, a cholesterol polyp) with low grade dysplasia (Hematoxylin&eosin, 10x magnification) (D).
Fig 3.
The flowchart summarized inclusion and exclusion criteria.
Table 1.
Clinicopathologic features and size distribution of gallbladder polyps.
Table 2.
Distribution of cases based on 10-mm size cut-off.
Fig 4.
The ROC analysis has revealed a cut-off of 9 mm, with AUC = 0.854 [0.818–0.889, 95% CI].
At this threshold, the sensitivity was 69.5% and specificity was 95.9%.
Table 3.
Sensitivity, specificity, positive and negative predictive values of different cut-off points.