PMC5577029_01
Cholecystocutaneous fistula formation after the removal of the cholecystostomy.
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F1
After removal of the cholecystostomy, the drain track failed to heal and subsequently formed a cholecystocutaneous fistula (Figure 1).  She managed well after the removal procedure, although the fistula was draining 200-300 mL turbid fluid daily.
Three gallstones passed through the fistula, the largest 5 cm in size.
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F2
Two years later she passed 3 gallstones through the fistula, the largest being 5 cm in size (Figure 2).
Follow-up CT scan showing the presence of a stone within the tract.
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F3
A follow-up CT scan showed an additional stone within the tract (Figure 3).