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- Congenital failure of spleen to form normal peritoneal attachments, through failure of fusion of dorsal mesogastrium to posterior abdominal wall
- Acquired defects in peritoneal attachments in multiparous women, due to hormonal changes and abdominal laxity
- Both aetiological theories lead to a long pedicle which is prone to torsion
- Intermittent abdominal pain
- Splenomegaly from venous congestion
- Mobile mass may be palpable on examination
- Diagnosed on CT - spleen located outside its usual position. Check for perfusion.
