**Core Concept**
Leukaemia in pregnancy is a rare but serious condition that poses unique challenges for both the mother and the fetus. The management of leukaemia in pregnancy requires a multidisciplinary approach, considering both maternal and fetal well-being.

**Why the Correct Answer is Right**
Leukaemia in pregnancy is often asymptomatic in the early stages, and diagnosis is typically made incidentally during routine prenatal care or after the onset of symptoms. The risk of maternal and fetal complications is higher in women with uncontrolled leukaemia, emphasizing the importance of early diagnosis and treatment. Women with leukaemia in pregnancy are at increased risk of preterm labour, fetal growth restriction, and stillbirth.

**Why Each Wrong Option is Incorrect**
**Option A:** Leukaemia in pregnancy is more common than previously thought. This statement is true, as advances in diagnostic techniques have led to an increase in the detection of leukaemia in pregnant women.
**Option B:** Leukaemia in pregnancy carries a poor prognosis for both the mother and the fetus. This statement is also true, as the risk of maternal and fetal complications is higher in women with uncontrolled leukaemia.
**Option C:** Women with leukaemia in pregnancy should be managed by a multidisciplinary team of healthcare providers. This statement is true, as the management of leukaemia in pregnancy requires a coordinated approach, considering both maternal and fetal well-being.
**Option D:** Leukaemia in pregnancy is a contraindication to pregnancy. This statement is false, as many women with leukaemia can achieve successful pregnancies with proper management and care.

**Clinical Pearl / High-Yield Fact**
It is essential for healthcare providers to maintain a high index of suspicion for leukaemia in pregnant women, particularly those with unexplained symptoms or abnormal laboratory results.

**Correct Answer: D. Leukaemia in pregnancy is a contraindication to pregnancy.**