What Is Brain Calcification?

Choroid plexus calcification is the most common physiological calcification. Choroid plexus calcification rarely occurs in people younger than 3 years of age. The incidence of choroid plexus calcification increases with age, and its incidence can reach more than 75% at the age of 50.

Brain calcification

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Choroid plexus calcification is the most common physiological calcification. Choroid plexus calcification rarely occurs in people younger than 3 years of age. The incidence of choroid plexus calcification increases with age, and its incidence can reach more than 75% at the age of 50.

brief introduction

First plexus choroid plexus calcification

Choroid plexus calcification occurs mainly in the lateral ventricle and rarely occurs in the third and fourth ventricles. The calcifications can be spot-shaped, with a diameter greater than 1 cm, and are round or irregular. Calcification is usually bilaterally symmetrical, but can also be asymmetrical or occur only unilaterally. For occupying lesions such as tumors in the brain, sometimes it may be helpful to locate the occupying lesions by observing the calcified choroid plexus for displacement and the direction of displacement.

Calcification of pineal gland and crotch in second bar

Common in adults, and more likely to appear with age, about 75% of normal adults show pineal calcification on CT scans. Its diameter usually ranges from 3 to 5 mm, but sometimes it may be wider. The following three cases should be considered for the possibility of tumors in the pineal region, and MRI examinations should be performed to determine if necessary.

(1) Pineal body calcification is greater than 12mm.

(2) The calcified pineal glands were significantly deviated from the midline.

(3) Pineal calcification occurs in children under 10 years of age.

The condyle is located in front of the pineal gland in the back of the third ventricle. After 30 years of age, 15% of brain CT scans can show calcification of the palate. Although its shape is more characteristic, it is often mistaken for pineal calcification, and the typical calcification of the palate is "C".

Basal calcification

Calcifications of the basal ganglia may be unexpectedly found on normal adult skull images. Its typical manifestation is bilateral symmetry, which mostly starts at the head of the caudate nucleus. Calcifications can also be asymmetric, and pale bulbs, putamen, and lateral thalamus can also be affected. Basal ganglia calcification is uncommon in normal children, but is more common in adults after the age of 40. This primary basal ganglia calcification is clearly age-related.

Physiological calcification is asymptomatic and the calcifications are relatively small. If the calcifications are large, with calcification of the dentate nucleus, or if the calcification occurs under 30 years of age, the possibility of pathological calcification should be considered.

Calcification of cerebellar dentate nucleus

Calcification of the cerebellar dentate nucleus in the posterior cranial fossa can also occur, but calcification of the dentate nucleus is rarer than basal ganglia. May or may not be accompanied by on-screen calcification. Calcification is usually diffuse, fuzzy, or small, which is caused by calcium deposits around tiny capillaries and calcification of the walls of tiny arteries and veins. The significance of calcification of dentate nucleus is the same as that of basal ganglia, which can be physiological or pathological.

Dural calcification

Dural calcification is common in middle-aged and elderly people, and sickle or cerebellar calcification is easy to identify. Cerebral sickle calcification mostly travels along the cerebral sickle and is linear. It can also be expressed as fusiform or spherical focal calcification.

Other intracranial calcifications

The calcification of the rock bed ligaments often appears on the lateral skull, showing line-like calcifications at the top of the saddle and the apex of the rock; calcifications between the ligaments of the rock can also occur, so-called "saddle bridge" signs; It can be discerned on the tissue section, and rarely can be found by simple imaging examination. The calcification of the lens can be seen in the elderly, showing as a ring shadow in the orbit.