[Pseudo-tumoral osteomyelitis. Immunologic study and etiopathogenic approach. Apropos of 2 cases].

Two cases of pseudo-tumoral osteomyelitis are reported. The first concerns a 12 year-old boy who presented with pain of the left knee during 8 months and, later on, with swelling of the upper extremity of the left leg, without fever or local inflammatory signs. The radiological aspect of condensation with a filling defect and "chimney" crossing the cartilage led to osteotomy.

[Recurrent multifocal periostosis in children. Report of a familial form].

Recurrent multifocal periostosis of childhood is an infrequent disease. All cases reported to date have been sporadic. A familial form affecting three siblings is reported herein.

[Contribution of echography in the course and treatment of acute osteomyelitis].

In a series of 43 cases of acute hematogenous osteomyelitis, the ultra sound (US) allowed the diagnosis and the accurate localisation of the sub periosteal abscess. The early surgical treatment of the sub periosteal abscess since its nascent or, at least, before its rupture into the soft parts, changes completely the development of the illness and reduces considerably the chronicity forms. This early surgical treatment allows also to isolate rapidly the germ and to test its sensitiveness to antibiotics, which insures a better effectiveness to the medical treatment.