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Leg swelling in a newborn
  1. S M Gajjar,
  2. H P Walsh
  1. Department of Orthopaedics, Royal Liverpool Children’s NHS Trust, Alder Hey, Liverpool, UK
  1. Correspondence to:
 MrS M Gajjar
 7 Shawton Road, Childwall, Liverpool L16 6AU, UK; drsgajjaryahoo.com

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A 2 week old male child was referred to the orthopaedic service with a swelling in the left tibia and associated deformity of the foot. He was born at 38 weeks by normal delivery and birth weight. There was no other significant history. On examination, there was a fusiform swelling over the antero-medial aspect of the tibial diaphysis. The overlying skin was normal with no local warmth and the mass was firm but not painful. The foot deformity was fully correctable. His ipsilateral hip and knee examination was normal. The limb lengths were equal with the remaining skeletal examination being normal. Initial radiological investigations included plain radiographs and later an MRI scan of the affected part (figs 1 and 2).

Figure 1

 Plain radiographs of the left leg showing the lesion in the tibia with fibula fracture.

Figure 2

 MRI scan T1 weighted (coronal view) showing the expansile lesion in the left tibia with breach in cortex and soft tissue extension.

QUESTIONS

Based on the clinical presentation and imaging studies:

  1. Describe the radiological features in figures 1 and 2

  2. What is the differential diagnosis?

  3. What is the management of this condition?

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