Cervical spine involvement in psoriatic arthritis.

Unlabelled: The clinical and radiographic manifestations of cervical spine involvement in psoriatic arthritis remain incompletely described. Only one case-control study has been reported.

Objective: To conduct a case-control study of the clinical and radiographic manifestations of cervical spine involvement in psoriatic arthritis.

Can an anomalous lumbo-sacral or lumbo-iliac articulation cause low back pain? A retrospective study of 12 cases.

Unlabelled: Although anomalous lumbo-sacral articulations are present in 5 to 7% of the population at large, their clinical relevance remains a matter of debate. Articulation between the L5 transverse process and the sacrum or ilium has been implicated as a cause of low back pain.

Objective: To define symptoms and effects of steroid injections in patients with an articulation between a L5 transverse process and the sacrum or ilium.

Fourteen cases of sarcomatous degeneration in Paget's disease.

Objective: To describe characteristics of cases of sarcomatous degeneration in Paget's disease (SDP) recorded over 10 years in 2 French university hospitals, with particular emphasis on the pattern of this entity on magnetic resonance imaging (MRI).

Methods: Fourteen cases are described. Epidemiological, clinical, radiological, histological, and MRI features (in 3 cases) are compared to others in the literature.