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Table 1: Niemeier classification: types of gallbladder perforation. |
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|
Type |
Features |
|
1 |
Chronic perforations: the fistulous tract is seen between the gallbladder and some other viscera |
|
2 |
Subacute perforations: the gallbladder is surrounded by an abscess and adhesions in the peritoneal cavity |
|
3 |
Acute perforation: free perforation into the abdominal cavity |