What is the medical term meaning herniation of the spleen?

Hernia splenica lumbalis

Hernias of the lumbar region are rare but have been reported to occur after trauma, flank surgery, iliac bone grafting, spontaneously, or as a result of congenital abnormality of musculoskeletal development. The acquired type is more common than the congenital type. The contents of the hernia most commonly are retroperitoneal fat, kidney, and bowel. We report a case of an asymptomatic postincisional lumbar herniation of a spleen that was diagnosed by computed tomography.
splenocele