case_images: PMC5727563_01
case_images: CT abdomen: linear calcification extending from the gallbladder through the cystic duct (dashes).
case_images: CRIS2017-7167934.001.jpg
case_images: PMC5727563_01_CRIS2017-7167934.001.jpg
case_images: fig1
case_images: Initial work-up began with an enhanced computed tomography (CT) scan, which revealed linear dense calcifications within the gallbladder extending into the cystic duct to the junction of the common bile duct (Figure 1).
case_images: Magnetic resonance cholangiopancreatography (MRCP) demonstrating the 3-line sign typical for ascaris worm (arrow).
case_images: CRIS2017-7167934.002.jpg
case_images: PMC5727563_01_CRIS2017-7167934.002.jpg
case_images: fig2
case_images: Tumor markers were within the normal ranges, and MRCP showed a 3-line sign and was unremarkable for any other abnormalities (Figure 2).
case_images: Gross specimen of the gallbladder with a mucus plug mimicking a worm.
case_images: CRIS2017-7167934.003.jpg
case_images: PMC5727563_01_CRIS2017-7167934.003.jpg
case_images: fig3
case_images: Gallbladder gross examination was suggestive of a parasitic worm with some sludge (Figure 3).
case_images: Microscopic examination of the tubular structure confirming a thick mucus content and absence of parasitic infestation.
case_images: CRIS2017-7167934.004.jpg
case_images: PMC5727563_01_CRIS2017-7167934.004.jpg
case_images: fig4
case_images: However, the definitive histopathological study revealed a chronic cholecystitis with thick mucus content and no evidence of a parasitic infection, worm, larva, or ova (Figure 4).