Radiology Review: Proximal Tibia Aneurysmal Bone Cyst
Erin S. Hart
Alison Turner

$3.95 		Orthopaedic Nursing
August 2011 
Volume 30  Number 4
Pages 288 - 289
 
  PDF Version Available!

ABSTRACT
The patient is a 4-year-old female who was referred to the pediatric orthopaedic clinic for a preoperative consultation regarding a left proximal tibia lesion that was discovered late last week by her pediatrician. She initially presented to her pediatrician with a 3- to 4-week history of intermittent left leg pain and a 2-week history of a limping gait. X-rays taken at her pediatrician's office demonstrated a concerning lesion in the left proximal tibia (see Figure 1). Differential diagnosis included osteosarcoma, Ewing sarcoma, and osteomyelitis versus aneurysmal bone cyst (ABC). She underwent a computed tomographic (CT) scan and the previous day she had underwent a magnetic resonance imaging (MRI) scan with gadolinium (contrast) for further evaluation of this lesion. The MRI scan was most consistent with an ABC with a multilocular mass in the medial left proximal tibia metaphysis with multiple fluid-filled levels (see Figure 2). No enhancing solid components to suggest a secondary associated

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