What is the expected hCG level change in a Partial Hydatidiform mole?

In a partial hydatidiform mole, the expected hCG level typically shows an increase. This condition occurs when there is an abnormal fertilization event, leading to the presence of both maternal and paternal genetic material. The abnormal trophoblastic tissue that forms in a partial mole produces elevated levels of hCG, which can be significantly higher than the normal levels seen in a healthy pregnancy.

Unlike a complete hydatidiform mole, where there is only paternal genetic material leading to even higher hCG levels, partial moles still have some contribution from the maternal genetic side, which can result in a more moderate but still elevated hCG. Therefore, monitoring the hCG levels in patients suspected of having a partial hydatidiform mole is crucial, as it helps in confirming the diagnosis and monitoring the molar tissue's behavior.

Other options such as no change, decrease, or normal levels do not account for the dynamics of hCG production in this pathological condition, where the abnormal placental tissue continues to stimulate increased hCG secretion.