Langerhans cell histiocytosis of the hip in children

Abstract

Eight year old girl was referred to our consultation for a lameness
with a flessum of the left hip with fever (38.5°C). Biology showed an
inflammatory syndroma (CRP: 29 mg/l). Pelvic X-ray showed an
osteolysis of the roof of the left acetabulum with regular contour (A).
Magnetic resonance imaging (MRI) showed tissue thinning and
damage to the roof of the left acetabulum (B). A scanno-guided
biopsy was performed, anatomopathological study confirmed the
diagnosis of Langerhans cell histiocytosis. A discharge, with traction
was done. The child has improved and biology has normalized. The
radiograph of the hip after 1 year showed a filling of the gap (C).
Langerha's cell histiocytosis is a proliferation of mononuclear
phagocytic cells. It is also called eosinophilic granuloma. It is often
located at the skull and spine. The localization at the hip represents
only 8% of the cases it is especially supra-acetabular its spontaneous
evolution is favorable.