[Rupture of renal angiomyolipoma during pregnancy: a case report].

A 39-year-old woman, who was followed because of a 4 cm asymptomatic angiomyolipoma (AML) in the left kidney, presented with an acute onset of lower left back pain in the 38th week of her first pregnancy. An ultrasound revealed an 8 cm mass suggestive of AML rupture and retroperitoneal hemorrhage. An emergency caesarean delivery was performed. A post-delivery computed tomographic scan confirmed the AML rupture and selective embolization was performed. This was a case in which the AML grew rapidly during the pregnancy ; therefore, we discuss the relationship between AML and pregnancy.