The diagnosis: Spontaneous gallbladder perforation
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2. Niemeier, O.W. Acute free perforation of the gall-bladder. Ann Surg. 1934;99:922-4.
3. Hyodo, T., Kumano, S., Kushihata, F. et al. CT and MR cholangiography: advantages and pitfalls in perioperative evaluation of biliary tree. Br J Radiol. 2012;85:887-96.