What causes Pericentric inversions?

Pericentric inversions result from a two-break event in which there is a break in each arm including the centromere. [1] An inversion does not usually have phenotypic effect in the majority of pericentric inversion heterozygote carriers, when it is a balanced rearrangement.

How are Paracentric and pericentric inversion difference?

Inversions are of two types: paracentric and pericentric. Paracentric inversions do not include the centromere, and both breaks occur in one arm of the chromosome. Pericentric inversions include the centromere, and there is a break point in each arm.