[An unusual cause of secondary scoliosis: vertebral osteoblastoma].

We report the observation of a 22-year-old man suffering from nocturnal back pain for 2 years. The clinical examination shows a scoliosis. Imaging suggests either malignant tumor or an aggressive osteoblastoma of the sixth thoracic vertebra.

[MRI findings in pituitary-hypothalamic axis Langerhans cell histiocytosis].

Pituitary-hypothalamic axis Langerhans cell histiocytosis is an uncommon entity. It is a rare disease in adults. The CT and MR study provides us the best anatomo-topographic evaluation and determine the precise size of the lesion which are necessary to the treatment.