Imaging Case of the Week 103

The following lumbar spine AP x-ray is from a 55 year old woman with low back pain. What can be seen?

lumbar spine AP

[peekaboo_link name=”Answer”]Answer[/peekaboo_link] [peekaboo_content name=”Answer”]

The single AP view looks normal; however, there is an incidental finding of popcorn calcification in the pelvis. Given its location in the pelvis, this is likely a calcified uterine fibroid.

uterine fibroid

Uterine fibroid (also called leiomyoma):

  • Benign neoplasm arising from the smooth muscle.
  • Location within the uterus can be submucous, subserous or intramural
  • They can be the cause of menorrhagia and lower abdominal pain
  • Submucous and subserous myomas can be pedunculated and as such, can undergo torsion.
  • Risk of malignant transformation is between 0.1-0.5% (leiomyosarcoma)
  • Imaging modality of choice is ultrasound
  • If symptomatic, will need appropriate outpatient referral