Social media addiction and personality dimensions among Tunisian medical students.

Purpose: Social media (SM) has become a common activity for today's young people. It is sometimes overused and potentially results in SM addiction. This study aims to assess SM addiction and its associated factors in medical students and to examine its relationship with dimensions of personality global self-esteem, and social self-esteem.

[Tumors of the pineal region: retrospective study of 40 cases].

Background: the tumours of the pineal region are rare brain tumours, most common in children and characterized by a large clinical and histologic polymorphism.

Aim: to assess the outcome and prognostic factors of 40 patients with primitive pineal region tumours treated at the department of radiotherapy of Salah Azaiz institute.

Methods: between January 1977 and December 2000, 40 patients received radiotherapy.