Understand the anatomy of posterior third ventricular region.
Learn the imaging appearances of posterior third ventricular tumors with histopathological correlation.
Utilise radiological clues to arrive at the diagnosis.
Introduction: Posterior third ventricle and its surrounding region is rich in varied tissue types clustered within a very small area. Common pathologies in this uncommon location and rare pathologies may be found here.
Thus, understanding the anatomy of this region and the various lesions that occur here is important in making the correct diagnosis.
Methods: Detailed anatomy of posterior third ventricle region will be followed by 20 histologically proven cases from our institutional experience, presented in a case based format with MR imaging. Viewers will be encouraged to deduce the anatomy of origin and specific tissue characteristics when possible in the following common and rare tumors:
Pineoblastoma
Pineocytoma
Pilocytic astrocytoma
Pleomorphic xanthoastrocytoma
Anaplastic Astrocytoma
Pilomyxoid Astrocytoma
Glioblastoma multiforme
Quadrigeminal plate lipoma
Epidermoid
Teratoma
Germinoma
Meningioma
Hemangioma
Atypical neurocytoma
Ependymoma
Choroid plexus papilloma
Pineal metastasis
Fibro-osseous tumor
Mixed germ cell tumors
Kumaran, S,
Assis, Z,
Viswamitra, S,
Spectrum of Tumors involving Posterior Third Ventricle: Anatomical, Clinical, Radiological and Histopathological Review. Radiological Society of North America 2014 Scientific Assembly and Annual Meeting, - ,Chicago IL.
http://archive.rsna.org/2014/14013257.html