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Abstract Introduction Laparoscopic adrenalectomy is the standard treatment for adrenal tumors caused by Cushing's syndrome. However, few pregnant women have undergone adrenalectomy because of the risk of general anesthesia and surgery. Case presentation A 28-year-old woman presented with gradually worsening Cushing's signs at around 12 weeks of pregnancy. Magnetic resonance imaging displayed a 38-mm left adrenal tumor, which was the cause of the adrenal Cushing's syndrome. Metyrapone was started, which increased androgen levels. Since the management of Cushing's syndrome by medication alone is challenging, unilateral laparoscopic adrenalectomy by a retroperitoneal approach was performed at 23 weeks of the pregnancy. No perioperative complications were noted. Conclusion Adrenalectomy is considered safe in pregnant women with Cushing's syndrome. Laparoscopic adrenalectomy by retroperitoneal approach should be chosen and performed between 14 and 30 weeks of pregnancy to prevent mother and fetal complications. Abbreviations & Acronyms CS Cushing's syndrome MRI magnetic resonance imaging Keynote message We report a rare case of adrenalectomy performed via a retroperitoneal approach for Cushing's syndrome in a pregnant woman. Cushing's syndrome may affect the fetus, and surgery can be considered in addition to medical management. Adrenalectomy should be performed in the second trimester of pregnancy. Pneumoperitoneal pressure, position, and surgical approaches must receive careful attention. Introduction CS is characterized by excessive cortisol secretion and characteristic symptoms such as full moon-like facial features and central obesity. Premenopausal women with CS rarely become pregnant because excessive glucocorticoid secretion inhibits the synthesis of gonadotropins, leading to impaired ovarian and endometrial function, and causing amenorrhea or oligomenorrhea.1 Furthermore, even when women with CS become pregnant, the incidence of severe complications is high. CS can cause maternal hypertension, diabetes/glucose intolerance, osteopenia/osteoporosis, preeclampsia, pulmonary edema, heart failure, opportunistic infections, and even death. Additionally, CS can potentially cause stillbirth, prematurity, and intrauterine fetal growth restriction.1-6 Therefore, CS must be detected at an early stage in pregnancy; however, CS may go undetected because of the overlapping signs of preeclampsia and/or gestational diabetes. A cortisol-secreting adrenal tumor is the underlying cause of CS, and laparoscopic adrenalectomy is the standard treatment to it. Medical treatment of CS can include medications that inhibit 11β-hydroxylase, such as metyrapone and osilodrostat, but surgical treatment is considered if the disease is difficult to control with medical treatment. Nonobstetric surgery during pregnancy is performed in 1%–2% of pregnant women.7 Although general anesthesia is relatively safe during pregnancy, the indication for the surgery must be carefully considered because of potential risks such as neurodevelopmental delay, sudden death, etc. Herein, we present a case of a pregnant woman diagnosed with CS who underwent unilateral laparoscopic adrenalectomy by a retroperitoneal approach without any problems. Case presentation The patient was a 28-year-old primiparous woman. Since around 12 weeks of pregnancy, she has experienced facial and lower limb edema; gained 6-kg weight in 1 month; increased facial acne; and experienced subcutaneous bleeding on the forearms, red abdominal dermatitis, proximal muscle weakness, palpitations, insomnia, and decreased vision in eyes. Her symptoms gradually worsened from 14 weeks, and she was referred to our hospital to clarify the cause at 18 weeks of pregnancy. Adrenal CS was suspected on the basis of her Cushing's signs, cortisol 25 μg/dL, and adrenocorticotropic hormone <1.5 pg/mL. She had hypokalemia, hypogammaglobulinemia, and liver dysfunction, and her condition was rapidly worsening. Given her pregnant state, she was admitted for intensive testing for the case of CS from 19 weeks of pregnancy. MRI revealed a well-defined 38-mm left adrenal tumor, which was the cause of the adrenal CS (Fig. 1). She was started on metyrapone with 250 mg per day, which increased androgens (0.53–0.69 ng/mL in 1 week). We considered that the management of CS by medication alone would be challenging and performed adrenalectomy during her pregnancy. The dose of metyrapone was increased to 1000 mg per day eventually. Fig. 1 Open in figure viewerPowerPoint Magnetic resonance imaging on admission shows a left adrenal tumor with a long axis of 38 mm (arrowhead). Signal reduction was partially observed on opposed-phase images, leading to diagnosis of cortical adenoma. She was admitted to the hospital at 23 weeks and 2 days of gestation, and laparoscopic left adrenalectomy was performed via a retroperitoneal approach in the right lateral and jackknife position on the following day (Fig. S1). During the surgery, blood pressure was carefully controlled by an anesthesiologist and the patient's position and fetal heart rate were monitored by an obstetrician. The operation time, insufflation time, and general anesthesia time were 68, 59, and 123 min, respectively, and the blood loss volume was 75 mL, without any complications. Pathological findings revealed an adrenocortical adenoma. The specimen was positive for one of the nine Weiss criteria (Fig. 2). Fig. 2 Open in figure viewerPowerPoint (a) Intraoperative findings of the retroperitoneal approach. Arrowheads indicate the tumor. (b) Gross appearance of the resected adrenal tumor; a brownish-toned, substantial mass, 60 × 34 × 15 mm in size. (c, d) Hematoxylin–eosin staining showed that nodular lesion with a fibrous capsule, with foci of homogeneous cells with eosinophilic or pale, foamy sporangia and small round nuclei. Postoperatively, metyrapone was discontinued and both lower leg edema, facial acne, fatigue, and muscle weakness improved. Metyrapone was discontinued after surgery. Hydrocortisone, which had been administered at 150 mg/day during the perioperative period, was reduced every few weeks and was taken at 30 mg/day at delivery. She delivered by cesarean section at 38 weeks and 2 days of gestation, with good outcomes for the mother and her infant. Hydrocortisone was discontinued 15 weeks after delivery. We showed the changes in cortisol and ACTH from the first visit to postpartum (Fig. 3). Fig. 3 Open in figure viewerPowerPoint The transition of Cortisol and ACTH. Cortisol decreases rapidly after surgery and rises again before delivery. As cortisol improved, ACTH also increased. Discussion CS seldom occurs during pregnancy. Symptoms such as weight gain, skin striae, fatigue, and a round face can also occur in normal pregnancies. The dexamethasone suppression test can result in false positives because of ACTH produced by placenta in normal pregnancy. During pregnancy, there is a physiological state of high cortisol levels. The disappearance of diurnal rhythm is a useful indicator for diagnosis of CS in pregnancy because circadian rhythm is maintained in normal pregnancy. Useful diagnostic criteria include urine cortisol levels greater than three times the upper limit of normal, loss of diurnal cortisol rhythm, and presence of adrenal tumors on MRI. The pharmacologic treatment of endogenous cortisol is complex, and hormonal management is challenging. While the management of the cortisol levels is important, metyrapone is a risk factor for gestational hypertension and may inhibit fetal cortisol production by crossing the placenta.1-6, 8-12 In this case, because androgens were also elevated and drug management was expected to be challenging, the surgery was aggressively considered. Despite the reports of successful adrenalectomy is after 28 weeks of gestation,6, 13, 14 The surgery should be performed by an experienced team between 14 and 30 weeks of pregnancy, that is, after organogenesis phase and before the fetus grows too large.1, 13, 15 A few pregnant women with adrenal CS undergo adrenalectomy. However, the laparoscopic approach is safe, and maternal and fetal complications were higher in women who did not undergo surgery.16 Less postoperative pain, faster wound healing, and faster postoperative recovery are the main advantages of laparoscopic surgery.17 In pregnant women, pneumoperitoneal pressure should be kept <12 mmHg because increased intraabdominal pressure decreases placental blood flow and can cause fetal acidosis due to the absorption of carbon dioxide used for insufflation. Laparoscopic adrenalectomy can be safely performed through both transperitoneal and retroperitoneal approaches.18 However, in pregnant women, performing the surgery by the retroperitoneal approach in the lateral position is preferable to prevent putting pressure on the fetus during the surgery. The retroperitoneal approach is advantageous, as less pressure is placed on the uterus and adhesions are prevented. After taking the lateral position, the obstetrician is advised to check the position and confirm that the abdomen is not compressed and that the fetal heart rate is normal. Conclusions We present a case of a pregnant woman diagnosed with adrenal CS who underwent a unilateral laparoscopic adrenalectomy by a retroperitoneal approach without any problems. Adrenalectomy is a useful treatment when CS is difficult to control despite metyrapone and other medical support. Author contributions Nobuyoshi Takeuchi: Conceptualization; methodology; project administration; writing – original draft. Yusuke Imamura: Conceptualization; methodology; supervision; writing – review and editing. Kazuki Ishiwata: Data curation; supervision. Manato Kanesaka: Data curation; supervision. Yusuke Goto: Data curation; supervision. Tomokazu Sazuka: Data curation; supervision. Sawako Suzuki: Data curation; supervision. Hisashi Koide: Data curation; supervision. Shinichi Sakamoto: Data curation; supervision. Tomohiko Ichikawa: Data curation; supervision. Conflict of interest The authors declare no conflicts of interest. Approval of the research protocol by an Institutional Reviewer Board Not applicable. Informed consent Informed consent for the release of the case report and accompanying images has been obtained from the patient. Registry and the Registration No. of the study/trial Not applicable. From https://onlinelibrary.wiley.com/doi/10.1002/iju5.12637-
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Laparoscopic adrenalectomy — a minimally invasive procedure that removes the adrenal glands through a tiny hole in the abdomen — can be safely performed in obese patients with Cushing’s syndrome, a retrospective study reports. The surgery resolved symptoms in 95% of cases, reducing cortisol levels, lowering blood pressure, and leading to a significant loss of weight in morbidly obese patients. The study, “Minimally invasive approach to the adrenal gland in obese patients with Cushing’s syndrome,” was published in the journal Minimally Invasive Therapy & Allied Technologies. Cushing’s syndrome results from the prolonged secretion of excess cortisol, the major glucocorticoid hormone. While most cases are caused by tumors in the pituitary gland, up to 27% result from tumors in the adrenal glands. In these cases, the standard therapeutic strategy is to remove one or both adrenal glands, a surgical procedure called adrenalectomy. However, because glucocorticoids are key hormones regulating fat metabolism, Cushing’s syndrome patients are known to be prone to obesity, a feature that is often associated with post-operative complications. In this study, researchers aimed to compare the outcomes of morbidly obese patients versus the mildly obese and non-obese who underwent a minimally invasive procedure to remove their adrenal glands. The approach, called laparoscopic adrenalectomy, inserts tiny surgical tools through a small hole in the abdomen, along with a camera that helps guide the surgeon. The study included 228 patients (mean age 53.4 years). Of them, 62 were non-obese, 87 were moderately obese, and 79 were considered morbidly obese. There were 121 patients with tumors in the right adrenal gland, 96 in the left gland, and 11 in both glands. High blood pressure was the most common symptom, affecting 66.7% of the participants. Surgery lasted 101 minutes on average, and patients remained in the hospital for a median 4.3 days afterward. Six patients had to be converted into an open surgery because of uncontrollable loss of blood or difficulties in the procedure. Post-surgery complications, most of which were minor, were seen in seven patients. One patient had blood in the peritoneal cavity and had to have surgery again; another patient had inflammation of the pancreas that required a longer admission. The analysis showed no statistical differences among the three groups regarding the length of surgery, length of stay in the hospital, or the rate of conversion into open surgery. However, in obese women, surgeons chose a different surgical incision when removing the left adrenal gland, “suggesting that the distribution of visceral fat in these patients could constitute a drawback for the [standard] approach,” researchers said. After the surgery, 95% of patients saw their symptoms resolve, including cortisol levels, high blood pressure, and glucose metabolism, and none had a worsening of symptoms in the 6.3 years of follow-up. Obese patients also showed a significant reduction in their weight — 2 kg by 18 months, and 5 kg by the end of follow-up. Overall, “laparoscopic adrenalectomy is safe and feasible in obese patients affected with Cushing’s disease and it can lead to the resolution of the related symptoms,” researchers said. The benefits of the surgery in patients with Cushing’s syndrome “could be extended to the improvements and in some cases to the resolution of hypercortisolism related symptoms (i.e. hypertension or even morbid obesity),” the study concluded. Adapted from https://cushingsdiseasenews.com/2019/02/07/laparoscopic-removal-of-adrenal-glands-safe-for-obese-cushings-patients/
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