May Be Caused by

 Common

Dermoid cyst

Epiploic appendage of colon

Epiploic appendagitis

Fatty liver

Fatty pancreas

Lipoma

Liposarcoma

Obesity

Pelvic lipomatosis

Renal sinus lipomatosis

Retroperitoneal lipomatosis

Teratoma

 Uncommon

Angiomyolipoma of kidney

Angiomyolipoma of liver

Cushing syndrome

Intussusception

Mesenteric hernia

Omental hernia

Steroid medication

Xanthogranulomatous pyelonephritis