This case represents an intersigmoid hernia, which is the most common type of sigmoid mesocolon hernias, it is an internal abdominal hernia that occurs in fossa intersigmoid 1. The intersigmoid fossa is a peritoneal pocket formed between two adjacent sigmoid segments and their mesentery 2.
Intersigmoid hernias (including all three types of sigmoid mesocolon hernias) represent about 4 to 8% of internal hernias 2.
This case was confirmed at surgery.