Figure 11.

Technique: Axial non enhanced CT, 450 mAs, 120 kV, 0.8 mm slice thickness.

(a): 38-year-old female with craniopharyngioma.

Findings: A sellar/suprasellar mass-like (long arrow) and rim calcifications (short arrows) impinging on the foramen of Monro causing hydrocephalus.

(b): 20-year-old male with pineocytoma.

Findings: A mass in the pineal gland (short arrows) with peripheral calcification (long arrow).

(c): 13-year-old boy with pineal teratoma.

Findings: Conglomerate of dense calcifications (long arrow) inside the pineal mass (short arrows).

(d): 27-year-old male with intraventricular ependymoma.

Findings: An irregular mass centered in the body of left lateral ventricle (short arrows) containing dense mass-like calcifications (long arrow) with secondary enlargement of the lateral ventricles.

(e): 42-year-old male with central neurocytoma.

Findings: A mass in the septum pellucidum (short arrows) containing conglomerates of calcifications (long arrow), obstructing the foramen of Monro and causing hydrocephalus of lateral ventricles.

(f): 62-year-old female with intraventricular meningioma.

Findings: Interventricular meningioma centered in posterior body of left lateral ventricle (short arrows) showing internal blush-like calcifications (long arrow) and a rim of calcifications (arrowheads) with secondary enlargement of the left occipital horn.