In this pregnant woman, the major part of the placenta is attached to the upper segment. Only the lower margin encroaches onto the lower segment, but not upto the os. What kind of placenta previa it this?

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Type 1
Type 1 (or low lying placenta previa) presents as the major part of the placenta attached to the upper segment, with only the lower margin encroaching onto the lower segment-but not upto the os. On the other hand, Type 2 (or posterior placenta previa) is the most dangerous of all types of placenta previa. Type 2 is characterized as the placenta reaching the margin of the internal os, but not covering it.

In This Pregnant Woman, the Major Part of the Placenta