To The Editor: Pregnancy after a complete loss of hypophyseal function is rare. Lack of growth hormone (GH), adrenocorticotropin (ACTH) and thyroid-stimulating hormone (TSH) in childhood may result in malfunction of different organ systems, affecting fertility. Complete lack of ovarian stimulation by FSH and LH results in anovulation and ovarian atrophy. We present a patient with panhypopituitarism who has achieved pregnancy and delivered through in vitro fertilization (IVF) and embryo transfer (ET). This 35 year-old woman underwent four trans-sphenoidal hypophysectomies at 12, 13, 23 and 26 years of age, for recurrent neuroectodermal cysts (embryonic remnant). Her second operation was complicated by panhypopituitarism with severe diabetes insipidus, treated with adequate doses of hydrocortisone, L-thyroxine and desmopressin. At age 21, cyclic substitution therapy with estrogen and progesterone was given for primary amenorrhea. Two years later, GH therapy was added. At age 33, she requested fertility treatment. GH, cyclic estrogen, and progesterone therapy were stopped, and she underwent ovulation induction, with gonadotropins, followed by IVF and ET, resulting in a successful dichorionic twin pregnancy. She was followed regularly at a combined antenatal clinic. No changes in steroid, desmopressin, or thyroxine doses were required, and the antenatal period was uneventful. An elective caesarean section was performed at 37 weeks gestation, and healthy twin boys (weighing 3.0 and 3.14 kg) were delivered. Clinical course during puerperium was normal.Conception and uncomplicated pregnancy in patients with hypopituitiarism are rare [1,2]. Well-timed substitution of missing hormones enables normal physical development. Stimulation therapy with gonadotropins can induce adequate follicular maturation. IVF-ET may be a useful treatment for infertility in patients with hypopituitarism as it may reduce the incidence of multiple pregnancies associated with higher risk in GH deficient patients.