Choroid Plexus Papilloma

 

Diagnosis:

Suggested by MRI and confirmed by pathology (brain biopsy/resection)

Findings on Investigations:

MRI:

  • Interaventricular mass: fourth ventricle > lateral ventricles > third ventricle
  • Homogenous mass, prominent flow voids (vascular), calcification
  • Lateral ventricle trigone. In adults it occurs at the 4th ventricle.
  • Calcification, hemorrhage may occur
  • Enhance intensely
  • Pathology:

Pathology:

Histology:

  • Hyperplasia of bland looking (Minimal atypia) choroid plexus cells. Fibrovascular stalks. Mitosis are rare.
  • Choroid plexus, epithelium

Immunohistochemistry: positive for= vimentin, keratin, S100.

Treatment:

Surgical resection, with or without radiation therapy

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