Contents: 1) The effects of cancer and its treatment on female fertility, 2) Fertility preservation in women, 3) Fertility preservation in men, 4) Management of cancer in pregnancy, 5) Drugs used in pregnancy, 6) Pregnancy after diagnosis and treatment of cancer, 7) Fertility outcome in men after cancer treatment, 8) Premature ovarian insufficiency - diagnosis and overview of survivorship issues, 9) Egg donation and surrogacy, 10) Hormone replacement options for women with premature ovarian insufficiency after cancer treatments, 11) Hereditary cancer syndromes and fertility, 12) Counselling - cancer and fertility: what does a counsellor in a fertility clinic do? 13) Ethical issues in fertility preservation for cancer patients. Cases: 1) Fertility preservation in early breast cancer, 2) Fertility preservation in cervical cancer, 3) Fertility preservation in testicular cancer, 4) Post-partum fertility preservation, 5) Colon cancer with inherited genetics: Lynch syndrome, 6) Ovarian tissue cryopreservation in the setting of recurrent cancer and escalation of treatment, 7) A case of fertility preservation in a young man unable to produce a sperm sample prior to chemotherapy initiation, 8) A case of an unexpected conception in a patient with metastatic melanoma on immune checkpoint inhibitors, 9) An unexpected pregnancy in a woman with metastatic breast cancer, 10) Accidental pregnancy during chemotherapy treatment, 11) A case of lung cancer diagnosed during pregnancy, 12) A woman who wishes to become pregnant following treatment for ER+ breast cancer, 13) Pregnancy after bone marrow transplant, 14) Woman with premature ovarian insufficiency after stem cell transplant and total body irradiation seeking fertility treatment, 15) Premature ovarian insufficiency, HRT and VTE, 16) Premature ovarian insufficiency and HRT in breast cancer: management of vaginal symptoms and hot flushes, 17) Premature ovarian insufficiency and bone health, 18) Pregnancy after testicular failure caused by cancer treatment, 19) Risk reducing bilateral salpingo-oophorectomy in BRCA positive breast cancer, 20) Pregnancy following trachelectomy, 21) A case of ovarian tissue cryopreservation in the setting of Non-Hodgkin's Lymphoma, 22) A case of breast cancer in a transgender man with BRCA2 mutation, 23) A case of testicular cancer in a gay man.