Choroid plexus papilloma

Choroid plexus papilloma
Diagnosis in short
Choroid plexus papilloma H&E stain.
LM	Papillary epithelial structures.
LM DDx	metastatic papillary adenocarcinoma, ELST
IHC	Kir 7.1+ve, EAAT1+ve, GFAP+/-, S-100+/-, CK+/-
Site	all ventricles, cerebellopontine angle
Symptoms	hydrocephalus

Choroid plexus papilloma is a benign neuropathology arising in the ventricles of the brain.

General

• Benign - WHO grade I.
• Usu. laternal ventricle in kids.

Microscopic

Features:

• Simple epithelium.
• Papillae.
• Psammoma bodies.

Images

• 

  Choroid plexus papilloma. (WC)

www:

• Choroid plexus papilloma - oncocytic variant - several images (upmc.edu).

See also

• Neuropathology tumours.
• Choroid plexus carcinoma.