A completely isolated intestinal duplication cyst mimicking ovarian cyst torsion in an adult

Figure 1 A contrast-enhanced coronal image of computed tomography reveals a well-circumscribed and poorly attenuated dumbbell-shaped mass exhibiting peripheral enhancement and a trilaminar appearance in the pelvic cavity.

Figure 2 Gross findings of the resected mass. The 12-cm-long cystic mass has a smooth pinkish outer surface (A), and the cavity is uniloculated and incompletely septated (B).

Figure 3 Microphotographs of the cystic wall. The wall consists of mucosa, submucosa, muscle layers, and serosa (A, HE stain, × 10), with regions of gastric-type mucosa containing oxyntic glands (B, HE stain, × 100).