[Suboccipital Pott's disease]

A new case of sub-occipital Pott's disease is reported: a 26 year old, coloured male patient from Senegal was admitted for: cervical pain of 6 month duration, neck stiffness, dysphagia, left XII paralysis and left hemiparesis. The radiological study found an anterior atlanto-axial subluxation, basilar impression, and increased thickness of the retropharyngeal soft tissue, lysis of the left occipital condyle and the left lateral mass. CT scan study revealed a retropharyngeal mass and an epidural contrast-enhanced lesion at the C2 C3 C4 levels. Chest-X ray showed one tuberculous lesion at the right apex. The research of Acid Fast Bacilli in gastric secretion samples and the results of the retropharyngeal mass puncture were positive. An antituberculous trichemotherapy was started. After early reduction by skull tongs traction, an occipito-cervical arthrodesis by Roy Camille plates was performed, followed by the wearing of a minerva plaster jacket and then a plastic collar. Each one for a 5 month period. One year later, there remained only a left XII paralysis, but the bony reconstruction was not yet obvious on tomography. A survey of the literature of 70 cases of sub-occipital Pott's disease has pointed out these findings: cervical pain (98%), neck stiffness (82%), Atlantoaxial subluxation (68%), thickened prevertebral soft tissue shadow (77%), lateral mass lysis (48%) other tuberculous focus (29%). The main therapeutic trends are: early and long-lasting antituberculous poly-chemotherapy, early reduction of subluxations, prolonged contention for slight osteolytic lesions and for major: lytic lesions, a posterior surgical procedure either by bone graft combined with wires or preferably fusion by means of occipito-cervical plates. The removal of abscess is discussed.