Intramuscular mesenchymal chondrosarcoma surrounded by a split fat sign mimicking a benign lesion.

Mesenchymal chondrosarcoma (MCS) is an aggressive malignant mesenchymal tumour of uncertain differentiation. This is rare, accounting for 2%-4% of chondrosarcomas. Its peak incidence is in the second and third decades, though it can occur at any age.

Validating scoring systems for fracture healing in infants and young children: pilot study.

Background: Recent studies have analysed birth-related clavicular fractures to propose time frames for healing that could be applied to dating of all fractures in cases of suspected child abuse.

Objective: To assess differences in healing rates between femoral fractures and birth-related clavicular fractures in infants and young children.

Materials And Methods: A retrospective 5-year pilot study of femoral fractures in children younger than 3 years of age was performed.