Petrous apex cephalocele and empty sella/arachnoid cyst coexistence: a clue for cerebrospinal fluid pressure imbalance?

Purpose: To reveal the magnetic resonance imaging (MRI) properties of incidental petrous apex cephalocele (PAC) and coexisting empty sella-arachnoid cyst.

Materials And Methods: We reviewed our archive from June 2005 to July 2008. Four patients were diagnosed with PAC (four females; age range, 41-60 years; mean, 48.

A rare reason of foot drop caused by primary diffuse large b-cell lymphoma of the sciatic nerve: case report.

Introduction: Primary central nervous system lymphomas account for 2% of all malignant lymphomas. Although the involvement of peripheral nerves has been previously described as a dissemination of systemic lymphomas or a direct extension to the nerve trunk from contiguous lymphomas, primary involvement of the sciatic nerve is extremely rare.

Case: To the best of our knowledge, the primary localization of lymphoma within sciatic nerve has been reported only nine times.