Spectrum of choroid plexus lesions in children.

Objective: The aim of this article is to review the embryology of the choroid plexus and the spectrum of disorders involving the choroid plexus in children and to illustrate their radiologic features.

Conclusion: The choroid plexus is an important part of the CNS that can be the primary or secondary location for many congenital abnormalities or pathologic conditions such as neoplasms, infections, inflammatory processes, cysts, and vascular malformations.

Melanotic paraganglioma arising in the temporal horn following Langerhans cell histiocytosis.

Intracerebral paragangliomas are rare because of the lack of paraganglial cells in the cerebral tissue. We report a rare case of melanotic paraganglioma arising from the temporal horn of the lateral ventricle in a patient with prior Langerhans cell histiocytosis (LCH) treated with chemotherapy and radiation.

Infantile myofibromatosis involving the choroid plexus.

We present a case of infantile myofibromatosis manifest as a choroid plexus mass followed by spontaneous regression. Infantile myofibromatosis is a common juvenile fibrous disorder occurring in infancy and early childhood. Intracranial involvement in infantile myofibromatosis is rare.

Imaging of a thoracic spinal nerve haemangioblastoma by three-dimensional digital angiography.

Haemangioblastomas occur sporadically or in association with Von Hippel-Lindau (VHL) disease. Occasionally, they are associated with intrathecal cauda equina nerve roots and rarely with spinal nerve roots. The occurrence of a completely extrathecal, thoracic spinal nerve haemangioblastoma is exceptional, with only one case previously described in the English-language literature.

Angiographic CT in cerebrovascular stenting.

We evaluated the feasibility of angiographic CT (ACT) for visualizing metallic stents in three patients who underwent intracranial (n = 2) or extracranial (n = 1) stent placement to treat atherosclerotic lesions. ACT is a new technique that provides cross-sectional CT-like images based on rotational radiography performed with a rotating C-arm-mounted flat-panel detector. ACT allowed for the clear visualization of stents in both intracranial and extracranial arteries and was superior to conventional digital subtraction angiography and digital radiography in visualizing both the stent struts and their relationships to the arterial walls and aneurysmal lumen.