Outcome of pregnancies in a large cohort of women with acromegaly

Position statement on the diagnosis and management of acromegaly: The French National Diagnosis and Treatment Protocol (NDTP)

Acromegaly is a rare disease with prevalence of approximately 60 cases per million, slight female predominance and peak onset in adults in the fourth decade. Clinical diagnosis is often delayed by several years due to the slowly progressive onset of symptoms. There are multiple clinical criteria that define acromegaly: dysmorphic syndrome of insidious onset, symptoms related to the pituitary tumor (headaches, visual disorders), general signs (sweating, carpal tunnel syndrome, joint pain, etc.), complications of the disease (musculoskeletal, cardiovascular, pneumological, dental, metabolic comorbidities, thyroid nodules, colonic polyps, etc.) or sometimes clinical signs of associated prolactin hypersecretion (erectile dysfunction in men or cycle disorder in women) or concomitant mass-induced hypopituitarism (fatigue and other symptoms related to pituitary hormone deficiencies). Biological confirmation is based initially on elevated IGF-I and lack of GH suppression on oral glucose tolerance test or an elevated mean GH on repeated measurements. In confirmed cases, imaging by pituitary MRI identifies the causal tumor, to best determine management. In a minority of cases, acromegaly can be linked to a genetic predisposition, especially when it occurs at a young age or in a familial context. The first-line treatment is most often surgical removal of the somatotroph pituitary tumor, either immediately or after transient medical treatment. Medical treatments are most often proposed in patients not controlled by surgical removal. Conformal or stereotactic radiotherapy may be discussed on a case-by-case basis, especially in case of drug inefficacy or poor tolerance. Acromegaly should be managed by a multidisciplinary team, preferably within an expert center such as a reference or skill center for rare pituitary diseases.

Fertility in Acromegaly: A Single-Center Experience of Female Patients During Active Disease and After Disease Remission

CONTEXT

Fertility represents a major concern in patients with acromegaly.

OBJECTIVE

The current retrospective study aimed to investigate gonadal function and fertility rates in acromegalic women.

METHODS

In this referral-center study, 50 acromegalic women with disease onset within reproductive age were evaluated for prevalence of gonadal dysfunction and infertility. Anthropometric, metabolic, hormonal parameters, and gynecological ultrasound were evaluated at diagnosis and after disease control. Data about menstrual disturbances, pregnancy, and polycystic ovarian morphology (PCOM) were investigated at disease onset, at diagnosis, and after disease control.

RESULTS

At presumed disease onset, menstrual disturbances were reported in 32% of patients. Uterine leiomyoma, ovarian cysts, and PCOM were diagnosed in 18%, 12%, and 8%, respectively; 36.8% of patients were infertile. At diagnosis, menstrual disturbances were found in 58.1% (P = .02), being significantly more prevalent in patients with higher insulin-like growth factor-I quartiles (Q) (P = .03, Q1 vs Q4). Gynecological ultrasound revealed uterine leiomyoma, ovarian cysts, and PCOM in 39.1% (P = .04), 28.2% (P = .09), and 13% (P = .55), respectively. The infertility rate was 100% (P = .02). At disease control, menstrual disturbances were slightly decreased as compared to diagnosis (P = .09). Noteworthy, menstrual disturbances (P = .05) and particularly amenorrhea (P = .03) were significantly more frequent in patients with active disease duration greater than 5 years (median) as compared to those achieving disease control in less than 5 years. Among patients with pregnancy desire, 73.3% conceived at least once, with resulting infertility significantly decreased compared to diagnosis (26.7%; P = .01). At-term deliveries, preterm deliveries, and spontaneous abortions were recorded in 86.7%, 6.6%, and 6.6%, respectively, of the 15 pregnancies reported by the patients. No neonatal malformations and/or abnormalities were recorded.

CONCLUSION

Gonadal dysfunction and infertility are common in acromegalic women within reproductive age, being directly influenced by disease status and/or duration.

Safety of pregnancy in acromegaly patients and maternal and infant outcomes after pregnancy: single-center experience from China and review of the literature

BACKGROUND

Pregnancy in acromegaly is uncommon and still in debate for fear of tumor progression or potential threat to both mother and fetus's health. Besides, the data for pregnancy complications in uncontrolled acromegaly is limited. Thus, the objective of this study was to summarize pregnancy safety and disease courses after pregnancy in acromegalic patients and review their clinical characteristics based on disease activity in the literature.

METHODS

An evaluation of eight acromegalic women from Peking Union Medical College Hospital (PUMCH) with 11 pregnancies was conducted. We also summarized a literature review of 82 disease-active pregnancies and 63 disease-controlled pregnancies with acromegaly. A second analysis was conducted to compare pregnancy courses and outcomes in different disease activities.

RESULTS

Before pregnancy, all patients had macroadenomas and underwent pituitary surgery. Pregnancy occurred at a median of 6 years (4-10) after the diagnosis of acromegaly. Assisted reproductive therapy was needed in 42.9% of participants. No cases had a premature birth or congenital malformations. Biochemical control was achieved in 50% of females before pregnancy and 75% at the last follow-up after delivery. Data analysis showed no differences in the prevalence of gestational diabetes mellitus (GDM) or pregnancy-induced hypertension (PIH) between acromegaly-active or acromegaly-controlled groups. The GDM prevalence in patients diagnosed during pregnancy (33.3%) was higher than that in patients diagnosed before pregnancy (4.8%) (p = 0.001).

CONCLUSION

Pregnancy without biochemical control in acromegaly and receiving medical treatment during pregnancy are not rare and generally safe for the fetus. There could be a higher prevalence of PIH in acromegalic pregnancies. The treatment of acromegaly and related complications can be managed with regular follow-up after pregnancy.

Surgical management of pituitary adenoma during pregnancy

BACKGROUND

Although conservative treatment is typically recommended for pregnant patients with pituitary adenoma (PA), surgical treatment is occasionally necessary for those with acute symptoms. Currently, surgical interventions utilized among these patients is poorly studied.

AIM

To evaluate the surgical indications, timing, perioperative precautions and postoperative complications of PAs during pregnancy and to provide comprehensive guidance.

METHODS

Six patients with PAs who underwent surgical treatment during pregnancy at Peking Union Medical College Hospital between January 1990 and June 2021 were recruited for this study. Another 35 pregnant patients who were profiled in the literature were included in our analysis.

RESULTS

The 41 enrolled patients had acute symptoms including visual field defects, severe headaches or vision loss that required emergency pituitary surgeries. PA apoplexies were found in 23 patients. The majority of patients (55.9%) underwent surgery in the second trimester of pregnancy. A multidisciplinary team was involved in patient care from the preoperative period through the postpartum period. With the exception of 1 patient who underwent an induced abortion and 1 fetus that died due to a nuchal cord, 39 patients delivered successfully. Among them, 37 fetuses were healthy until the most recent follow-up.

CONCLUSION

PA surgery during pregnancy is effective and safe during the second and third trimesters. Pregnant patients requiring emergency PA surgery require multidisciplinary evaluation and healthcare management.

Approach of Acromegaly during Pregnancy

Acromegaly-related sub/infertility, tidily related to suboptimal disease control (1/2 of cases), correlates with hyperprolactinemia (1/3 of patients), hypogonadotropic hypogonadism—mostly affecting the pituitary axis in hypopituitarism (10−80%), and negative effects of glucose profile (GP) anomalies (10−70%); thus, pregnancy is an exceptional event. Placental GH (Growth Hormone) increases from weeks 5−15 with a peak at week 37, stimulating liver IGF1 and inhibiting pituitary GH secreted by normal hypophysis, not by somatotropinoma. However, estrogens induce a GH resistance status, protecting the fetus form GH excess; thus a full-term, healthy pregnancy may be possible. This is a narrative review of acromegaly that approaches cardio-metabolic features (CMFs), somatotropinoma expansion (STE), management adjustment (MNA) and maternal-fetal outcomes (MFOs) during pregnancy. Based on our method (original, in extenso, English—published articles on PubMed, between January 2012 and September 2022), we identified 24 original papers—13 studies (3 to 141 acromegalic pregnancies per study), and 11 single cases reports (a total of 344 pregnancies and an additional prior unpublished report). With respect to maternal acromegaly, pregnancies are spontaneous or due to therapy for infertility (clomiphene, gonadotropins or GnRH) and, lately, assisted reproduction techniques (ARTs); there are no consistent data on pregnancies with paternal acromegaly. CMFs are the most important complications (7.7−50%), especially concerning worsening of HBP (including pre/eclampsia) and GP anomalies, including gestational diabetes mellitus (DM); the best predictor is the level of disease control at conception (IGF1), and, probably, family history of 2DM, and body mass index. STE occurs rarely (a rate of 0 to 9%); some of it symptoms are headache and visual field anomalies; it is treated with somatostatin analogues (SSAs) or alternatively dopamine agonists (DAs); lately, second trimester selective hypophysectomy has been used less, since pharmaco-therapy (PT) has proven safe. MNA: PT that, theoretically, needs to be stopped before conception—continued if there was STE or an inoperable tumor (no clear period of exposure, preferably, only first trimester). Most data are on octreotide > lanreotide, followed by DAs and pegvisomant, and there are none on pasireotide. Further follow-up is required: a prompt postpartum re-assessment of the mother’s disease; we only have a few data confirming the safety of SSAs during lactation and long-term normal growth and developmental of the newborn (a maximum of 15 years). MFO seem similar between PT + ve and PT − ve, regardless of PT duration; the additional risk is actually due to CMF. One study showed a 2-year median between hypophysectomy and pregnancy. Conclusion: Close surveillance of disease burden is required, particularly, concerning CMF; a personalized approach is useful; the level of statistical evidence is expected to expand due to recent progress in MNA and ART.

Acromegaly and pregnancy: a systematic review and meta-analysis

PURPOSE

To evaluate the association between acromegaly and pregnancy in terms of disease activity, maternal and fetal outcomes.

METHODS

This systematic review was conducted according to the Joanna Briggs Institute methodology for systematic reviews of etiology and risk. We focused on observational studies that included pregnant women with acromegaly. The outcomes were acromegaly activity, preterm birth, gestational diabetes, hypertension, eclampsia/preeclampsia, miscarriage, perinatal mortality, low birthweight, small for gestational age, and congenital malformations. Embase, Medline, LILACS, and CENTRAL were our source databases. To perform proportional meta-analyses, we used Stata Statistical Software 17.

RESULTS

Nineteen studies were included encompassing a total of 273 pregnancies in 211 women with acromegaly. The overall frequency of control of acromegaly during pregnancy was 62%, and of tumor growth was 9%. No fetal or maternal deaths were reported. The overall frequency of worsening of previous diabetes or development of gestational diabetes was 9%, and of previous hypertension or preeclampsia/eclampsia was 6%. The overall frequency of premature labor was 9% [from 17 studies of 263 pregnancies; 95% confidence interval (CI), 5-13%]; of spontaneous miscarriage was 4% (from 19 studies of 273 pregnancies; 95% CI, 2-11%); of small for gestational age was 5% (from 15 studies of 216 newborns; 95% CI, 3-9%); and of congenital malformations was 1% (from 18 studies of 240 newborns; 95% CI, 0-7%).

CONCLUSION

Pregnancy in women with acromegaly is frequently associated with disease control and is safe in relation to fetal and maternal outcomes, as in women without acromegaly.

Oral Octreotide: A Review of Recent Clinical Trials and Practical Recommendations for Its Use in the Treatment of Patients With Acromegaly

OBJECTIVE

Acromegaly is characterized by chronic growth hormone (GH) and insulin-like growth factor-I (IGF-I) hypersecretion, often caused by a GH-secreting pituitary adenoma. Surgery remains first line, but medical therapy is essential if surgery is contraindicated, does not achieve remission, or does not prevent recurrence despite apparent surgical remission. Oral octreotide capsules (OOC) that combine octreotide with a transient permeability enhancer technology are the first oral somatostatin receptor ligand (SRL) approved in the US for acromegaly.

METHODS

We review the literature and clinical trial data of OOC for patients with acromegaly and discuss clinical assessment of OOC use, potential drug-drug interactions, drug initiation, dose titration, and monitoring of drug efficacy and tolerability.

RESULTS

Four pivotal clinical trials involving a total of 238 patients with acromegaly treated with OOC effective suppression of serum GH and IGF-I levels, maintenance of disease control, decreased breakthrough symptoms and symptomatic improvement with noninferiority of OOC to injectable SRLs (iSRLs) in maintaining biochemical response. Additionally, the safety profile of OOC is comparable to that of iSRLs. Most patients who completed the clinical trials of OOC have also expressed preference to oral compared to iSRL administration.

CONCLUSION

OOC is an effective treatment option for patients with acromegaly who previously responded to iSRLs, with the benefits of avoiding injection-related side effects. This article provides a review of the pharmacology, safety, and efficacy and offers practical recommendations on utilization of OOCs to treat iSRL-responsive patients with acromegaly.

Course and outcomes of pregnancy in women treated for acromegaly: Discerning a contemporary cohort

OBJECTIVE

To analyze pregnancy course and outcomes in women treated for acromegaly and compare outcomes based on disease activity at the time of conception.

DESIGN

Retrospective study.

PATIENTS

Women with acromegaly diagnosed prior to or during pregnancy from 2010 to 2019, representing cases (14 pregnancies in 12 cases), were later stratified based on active (n = 5) or controlled disease (n = 9) at time of conception. Female acromegalic patients over the same period constituted the 'acromegaly cohort' (AC) (n = 75).

RESULTS

All cases had macroadenomas with nadir GH of 15.06 ng/ml (IQR 9-30), IGF-I index of 3.04 (1.96-3.82), for which they had undergone pituitary surgery; except two patients diagnosed during pregnancy, who received pharmacotherapy followed by surgery 4 months postpartum. Adjuvant pharmacotherapy was required in 71.4% patients and radiotherapy in 35.7%. Pregnancy occurred at a median of 2 (0.8-5.1) years after surgery and 21.4% required assisted reproduction. All had term delivery with normal APGAR except one case with gestational hypertension, who delivered a preterm baby. None had congenital malformations. Despite higher baseline IGF-I, GH and tumor volume in those with pre-conceptional active acromegaly, materno-fetal outcomes were not different from those with controlled disease (p > 0.05). Similar or greater proportion of cases had normal GH and no residual tumor postpartum, even in those with pre-conceptional active acromegaly.

CONCLUSION

The current study showed conducive outcomes of gestation in women treated for acromegaly and no higher rates of pregnancy parameters or complications than non-acromegaly pregnancies in the same population. Active acromegaly does not seem to have an adverse bearing on outcomes.

First-generation somatostatin receptor ligands and pregnancy: lesson from women with acromegaly

INTRODUCTION

Few data are available on the risks of first-generation somatostatin receptor ligands (SRLs) during pregnancy in women treated for acromegaly. Current recommendations suggest the withdrawal of treatment at diagnosis of pregnancy. The aims of this literature review were to evaluate the teratogenic effects and the potential impact of SRLs on maternal and fetal outcomes by comparing acromegalic patients treated or not during pregnancy.

PATIENTS AND METHODS

This study concerns 141 pregnancies in 127 women with acromegaly: 67 pregnancies in 62 women treated with SRLs during pregnancy and 74 pregnancies in 65 women not medically treated during pregnancy. A second analysis was then realized comparing women treated during 1st trimester only (36 pregnancies) and women treated longer (20 pregnancies).

RESULTS

One malformation (ureteral stenosis) was reported in a newborn of a woman treated with SRL during pregnancy. No difference was found concerning maternal outcomes (gestational diabetes, hypertension, headaches, and delivery mode) and fetal outcomes (birth term, height, and weight). These results were also confirmed for the second analysis.

CONCLUSIONS

This review of the literature did report one malformation without being able to prove a specific link with the first-generation SRL treatment. No significant impact on maternal and fetal outcomes is related to first-generation SRL treatment in women with acromegaly. The number of pregnancies is still low and more data are necessary to conclude on the total safety of this treatment during gestation. In the meantime, based on the nonthreatening data from this review of literature, SRL treatment can be continued and/or reintroduced during pregnancy if necessary (mainly for persistent headaches) in women with acromegaly.

Preconception use of pegvisomant alone or as combination therapy for acromegaly: a case series and review of the literature

PURPOSE

Pegvisomant (PEG) is an effective therapy for acromegaly. Its safety in women seeking fertility and during pregnancy has been scarcely reported.

METHODS

A retrospective chart review was performed in three patients with acromegaly who received PEG while attempting to conceive. Published studies regarding this topic were analyzed.

RESULTS

Four pregnancies in three women with acromegaly are reported. In the first patient, PEG was withdrawn three days before embryo transfer in her first pregnancy and 2 weeks prior to transfer in the second pregnancy. Each transfer resulted in a healthy full-term newborn. In the second and third patients, PEG was withdrawn at diagnosis of pregnancy. No fetal complications occurred during gestations which resulted in three full-term newborns (one single and one twin pregnancy). No abnormalities in development were found in the five live births described. Few cases of pregnancies in women exposed to PEG have been reported and therefore safety cannot be clearly established. In this series, all four pregnancies had good outcomes with discontinuation of the drug before or at first knowledge of conception. A review of the literature reveals no evident drug-related abnormalities in the offspring, even in the few women with continued use of PEG throughout pregnancy.

CONCLUSION

Preconception therapy with PEG resulted in successful fertility outcomes. Although few cases have been reported, these four pregnancies with PEG use prior to or at the time of conception were not associated with significant maternal or fetal complications. More studies are needed to establish the safety of PEG preconception.

Italian Association of Clinical Endocrinologists (AME) and Italian AACE Chapter Position Statement for Clinical Practice: Acromegaly - Part 1: Diagnostic and Clinical Issues

Acromegaly is a rare disease. Improvements in lifespan in these patients have recently been reported due to transsphenoidal surgery (TSS), advances in medical therapy, and strict criteria for defining disease remission. This document reports the opinions of a group of Italian experts who have gathered together their prolonged clinical experience in the diagnostic and therapeutic challenges of acromegaly patients. Both GH and IGF-I (only IGF-I in those treated with Pegvisomant) are needed in the diagnosis and follow-up. Comorbidities (cardio-cerebrovascular disease, sleep apnea, metabolic derangement, neoplasms, and bone/joint disease) should be specifically addressed. Any newly diagnosed patient should be referred to a multidisciplinary team experienced in the treatment of pituitary adenomas.

Pituitary Tumors in Pregnancy

Pituitary adenomas are common. The impact of pituitary tumors on fertility are mainly caused by oversecretion and/or undersecretion of pituitary hormones or compression of pituitary stalk and normal pituitary tissue by the tumor. Diagnosing and managing pituitary tumors during pregnancy involve many challenges, including the effect of hormone excess or deficiency on pregnancy outcome, changes in the pituitary or pituitary-related hormones, changes in tumor size, and the impact of various treatments of pituitary tumors on maternal and fetal outcomes. This article discusses the diagnosis and treatment of patients with prolactinomas, acromegaly, Cushing disease, and other pituitary tumors during pregnancy.

Octreotide use for rescue of vision in a pregnant patient with acromegaly

Pregnancy in acromegaly is rare and generally safe, but tumour expansion may occur. Managing tumour expansion during pregnancy is complex, due to the potential complications of surgery and side effects of anti-tumoural medication. A 32-year-old woman was diagnosed with acromegaly at 11-week gestation. She had a large macroadenoma invading the suprasellar cistern. She developed bitemporal hemianopia at 20-week gestation. She declined surgery and was commenced on 100 µg subcutaneous octreotide tds, with normalisation of her visual fields after 2 weeks of therapy. She had a further deterioration in her visual fields at 24-week gestation, which responded to an increase in subcutaneous octreotide to 150 µg tds. Her vision remained stable for the remainder of the pregnancy. She was diagnosed with gestational diabetes at 14/40 and was commenced on basal bolus insulin regimen at 22/40 gestation. She otherwise had no obstetric complications. Foetal growth continued along the 50th centile throughout pregnancy. She underwent an elective caesarean section at 34/40, foetal weight was 3.2 kg at birth with an APGAR score of 9. The neonate was examined by an experienced neonatologist and there were no congenital abnormalities identified. She opted not to breastfeed and she is menstruating regularly post-partum. She was commenced on octreotide LAR 40 mg and referred for surgery. At last follow-up, 2 years post-partum, the infant has been developing normally. In conclusion, our case describes a first presentation of acromegaly in pregnancy and rescue of visual field loss with somatostatin analogue therapy. Learning points: Tumour expansion may occur in acromegaly during pregnancy. Treatment options for tumour expansion in pregnancy include both medical and surgical options. Somatostatin analogues may be a viable medical alternative to surgery in patients with tumour expansion during pregnancy.

Pregnancy in acromegaly is safe and is associated with improvements in IGF-1 concentrations

Pregnancy is rarely reported in acromegaly. Many patients are diagnosed in later life and younger patients may have subfertility due to hypopituitarism. We present a case series of 17 pregnancies in 12 women with acromegaly. Twelve women with acromegaly who completed pregnancy were identified from centres involved in the Irish Pituitary Study. Eleven women had pituitary macroadenomas and one woman had a microadenoma. Only 5/17 pregnancies had optimal biochemical control of acromegaly preconception, as defined by IGF-1 concentration in the age-related reference level and plasma GH concentration of <2 μg/L. In 6/17 pregnancies, dopamine agonist treatment was continued during pregnancy; all other acromegaly treatments were discontinued during pregnancy. Effect of pregnancy on acromegaly: No patient developed new visual field abnormalities, or symptoms suggestive of tumour expansion during pregnancy. In 9/12 patients, plasma IGF-1 concentrations that were elevated preconception normalised during pregnancy. There was a reduction in plasma IGF-1 concentrations, though not into the normal range, in a further two pregnancies. Effect of acromegaly on pregnancy: 15 healthy babies were born at term; one patient underwent emergency C-section at 32 weeks for pre-eclampsia, and one twin pregnancy had an elective C-section at 35 weeks' gestation. Blood pressure remained within normal limits in the remainder of the pregnancies. Gestational diabetes did not develop in any pregnancy. Our data suggests that pregnancy in women with acromegaly is generally safe, from a maternal and foetal perspective. Furthermore, biochemical control tends to improve despite the withdrawal of somatostatin analogue therapy during pregnancy.

Pituitary Disease in Pregnancy: Special Aspects of Diagnosis and Treatment?

The diagnosis and treatment of pituitary disease in pregnancy represents a special clinical challenge. Not least because there is very little data on the treatment of pregnant patients with pituitary disorders. A selective search of the literature was carried out with the aim of compiling evidence about the diagnosis and treatment of pituitary disease in pregnancy. The search covered the databases PubMed/MEDLINE including PubMed Central and also used the Livivo (ZB MED) search engine. Recent studies were evaluated for recommendations about the care of pregnant patients with hormone-inactive and hormone-active pituitary adenomas (prolactinoma, acromegaly and Cushing's disease), pituitary insufficiency, pituitary apoplexy and hypophysitis. The most well-established forms of treatment are for prolactinoma, due to the incidence of this disease and its impact on fertility. When pregnancy has been confirmed, prolactinoma treatment with dopamine agonists should be paused. Although microprolactinomas rarely increase significantly in size after the administration of dopamine agonists is discontinued, symptomatic tumor growth of macroprolactinomas can occur. In such cases, treatment with dopamine agonists can be resumed. If the primary tumor is large and the risk that it will continue to grow is high, it may be necessary to continue medical treatment from the start of pregnancy. If one of the partners has a pituitary disorder, it is often still possible for many couples to achieve their wish of having children if they receive medical support to plan and the pregnancy is carefully monitored. Given the complexity of pituitary disease, pregnant patients with pituitary disorders should be cared for and treated by a multidisciplinary team in centers specializing in the diagnosis and treatment of pituitary disease.

An update on clinical care for pregnant women with acromegaly

INTRODUCTION

As pregnancy is rare in women with acromegaly, only case reports and few series have been published.

AREAS COVERED

All case reports and publications dealing with pregnancy in patients with acromegaly were collated. Information concerning the effects of acromegaly on pregnancy outcomes, the impact of pregnancy on GH/IGF-I measurements, acromegaly comorbidity and pituitary adenoma size, the effects of treatment of acromegaly on fetus outcomes were retrieved and analyzed.

EXPERT COMMENTARY

Based on the small number of reported cases, pregnancy is generally uneventful, except for a potential increased incidence of gestational hypertension and diabetes mellitus. Medical therapy of acromegaly (dopamine agonists, somatostatin analogs, growth hormone-receptor antagonists) is generally interrupted before or at diagnosis of pregnancy. In very rare patients with a pituitary adenoma, particularly a macroadenoma that has not been surgically treated before pregnancy, or if a surgical remnant persists, or when acromegaly is revealed during pregnancy, tumor volume may increase and cause symptoms through a mass effect. Close monitoring of clinical manifestations and imaging are necessary during pregnancy in these cases. In the rare cases of symptomatic tumor enlargement during pregnancy, medical treatment with dopamine agonists or eventually somatostatin analogs may be attempted before resorting to transsphenoidal surgery.