Anaesthetic management of oncological disease in pregnancy: a narrative review

Cancer complicates approximately 1 in 2000 pregnancies, with increasing incidence due to factors such as increased maternal age, obesity and advancements in antenatal testing. Anaesthetists play a crucial role in managing pregnant patients with cancer, both during delivery and in providing anaesthesia for oncological treatments. This review explores the challenges in anaesthetic management and specific considerations for common cancers encountered in pregnant patients.

An electronic literature search was carried out using PubMed and Google Scholar to identify peer-reviewed articles published in English from 1 January 1990 to 30 July 2024.

Two main areas were identified: anaesthetic management related to pregnancy and the peripartum period in patients with cancer; and oncological management during pregnancy. Current data suggest that pregnancy does not worsen cancer prognosis, but diagnosis and treatment are complicated by the overlap of cancer symptoms with physiological changes of pregnancy and concerns about the safety of diagnostic procedures and treatments. Ultrasound and magnetic resonance imaging are preferred imaging modalities, while careful use of ionising radiation is advised. Treatment during pregnancy, including surgery, chemotherapy and radiotherapy is possible, with specific timing and modality considerations to ensure maternal and fetal safety. Anaemia, poor nutrition and preterm birth are significant concerns in managing pregnant patients with cancer. For operative births, neuraxial techniques are preferred, though general anaesthesia may be required in complex cases. Comprehensive multidisciplinary support, including psychosocial care, is essential for optimal outcomes. Oncological surgery during pregnancy should preferably be scheduled for the second trimester, with consideration for fetal monitoring and steroids. Regional anaesthesia should be utilised if possible and uteroplacental perfusion maintained. Increased risks of thromboembolism should be addressed postoperatively, along with psychological support.

Effective and safe anaesthetic management of cancer in pregnancy requires a multidisciplinary approach to balance maternal and fetal safety, with a focus on careful planning and individualised care.