Article révisé par les pairs
Résumé : Osteoblastoma is a rare, bone-forming neoplasm accounting for 1% of primary bone tumours. It arises in young patients and develops in long bones and posterior elements of the spine. It is very unusual for it to be found in the foot. We report a case in a patient aged 43, revealed by inflammatory pain at the lateral edge of the foot, whose X-ray was normal both initially and after 3 months. ACT scan showed osteolytic lesion on the cuboid with no breakage of the cortical and hypersignal lesion in the MRI. Cuboid bone cyst was suspected. Curetage with allograft was performed: histological examination of the surgical specimen confirmed the diagnosis of osteoblastoma. This case was unusual in that it occurred in a patient over the age of 30 and it was located in the foot. Osteoblastoma is categorized as a benign bone tumour, although an aggressive type of osteoblastoma has been described. Recurrence following curetage can be minimized by adequate resection. © Springer Verlag 2009.