Oncological Treatment During Pregnancy on Mother and Child

Eligibility Details: Patients do not need to participate in both; however, preferentially both study parts should be performed. **************Part I: Pregnancy, delivery and maternal health************** Patients must meet the following inclusion criteria: - Histologically proven cancer in association with a pregnancy (during pregnancy or cancer dagnosis within 5 years after pregnancy) - > 18 years of age, premenopausal - Patients who have given their signed and written informed consent to participate in the trial after fully understanding the implication of the protocol - Women receiving any cytotoxic drug or radiation therapy during pregnancy are allowed for the assessment of the maternal and fetal outcome (Part II). Exclusion Criteria: - Mentally disabled or significantly altered mental status that would prohibit the understanding and giving of informed consent **************Part II: Follow-up of children************** Inclusion Criteria: - Children that were prenatally exposed to cancer of cancer treament. Informed Consent is asked from parents. Exclusion Criteria: - Mentally disabled or significantly altered mental status that would prohibit the understanding and giving of informed consent