Huge Peri Renal Extra Adrenal Myelolipoma

Extra-adrenal myelolipomas are a group of mesenchymal tumors which consist of a mixture of mature adipose tissue with hematopoietic cells. This intriguing tumor most commonly occurs within the adrenal gland; however, it has been occasionally found within the pelvis, thorax, retroperitoneal space, and various other sites throughout the body [1,2]. The physiopathology is not yet clearly explained, Amin, et al. [3] suggest that there may be a relationship between the re-activation of primitive peritoneal foci of extramedullary hematopoiesis under pathological stresses (severe anemia, sepsis, myeloproliferative disease ...) and the origin and progression of extraadrenal myelolipomas.