Isolated Sacral Sarcoidosis a Hidden Cause of Sciatica: Case Report and Brief Review of the Literature - Ben Tekaya, Aicha; Hamdi, Ons; Rouached, Leila; Bellil, Mehdi; Bouden, Selma; Saidane, Olfa; Tekaya, Rawdha; Mahmoud, Ines; Abdelmoula, Leila (Acta Medica Iranica, 2022)