Infratentorial oligodendroglioma in a child: a case report and review of the literature.

Oligodendrogliomas are the tumors of normal glial cells of brain called oligodendrocytes. They represent a small proportion of childhood brain tumors and are infrequently encountered in the posterior fossa. CT scan and MRI are very helpful for the preoperative management of oligodendrogliomas.

[Chondroblastoma of bone ].

Background: Chondroblastoma is a rare and benign cartilaginous tumor of bone often localized in the epiphysis of long bones and affecting young persons between 10 and 20 years.

Aim: To study the epidemiological, clinical and radiological aspects of bone chondroblastoma, to assess the outcome of chirurgical treatment and factors associated with recurrence.

Methods: It's a retrospective study, concerning 13 patients with chondroblastoma of bone, attending the orthopedic department of Sahloul hospital between 1991 and 2007.