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Lian X, Xu Z, Sun S, Wang W, Zhu H, Lu L, Hou X, Zhang F. Intensity-modulated radiotherapy for cushing's disease: single-center experience in 70 patients. Front Endocrinol (Lausanne) 2023; 14:1241669. [PMID: 37822603 PMCID: PMC10562628 DOI: 10.3389/fendo.2023.1241669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 08/31/2023] [Indexed: 10/13/2023] Open
Abstract
Context Intensity-modulated radiotherapy (IMRT) is a modern precision radiotherapy technique for the treatment of the pituitary adenoma. Objective Aim to investigate the efficacy and toxicity of IMRT in treating Cushing's Disease (CD). Methods 70 of 115 patients with CD treated with IMRT at our institute from April 2012 to August 2021 were included in the study. The radiation doses were usually 45-50 Gy in 25 fractions. After IMRT, endocrine evaluations were performed every 6 months and magnetic resonance imaging (MRI) annually. Endocrine remission was defined as suppression of 1 mg dexamethasone test (DST) or normal 24-hour urinary free cortisol level (24hUFC). The outcome of endocrine remission, endocrine recurrence, tumor control and complications were retrieved from medical record. Results At a median follow-up time of 36.8 months, the endocrine remission rate at 1, 2, 3 and 5 years were 28.5%, 50.2%, 62.5% and 74.0%, respectively. The median time to remission was 24 months (95%CI: 14.0-34.0). Endocrine recurrence was found in 5 patients (13.5%) till the last follow-up. The recurrence-free rate at 1, 2, 3 and 5 years after endocrine remission was 98.2%, 93.9%, 88.7% and 88.7%, respectively. The tumor control rate was 98%. The overall incidence of new onset hypopituitarism was 22.9%, with hypothyroidism serving as the most common individual axis deficiency. Univariate analysis indicated that only higher Ki-67 index (P=0.044) was significant favorable factors for endocrine remission. Conclusion IMRT was a highly effective second-line therapy with low side effect profile for CD patients. Endocrine remission, tumor control and recurrence rates were comparable to previous reports on FRT and SRS.
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Affiliation(s)
- Xin Lian
- Department of Radiation Oncology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Zhuoran Xu
- Department of Endocrinology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Shuai Sun
- Department of Radiation Oncology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Weiping Wang
- Department of Radiation Oncology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Huijuan Zhu
- Department of Endocrinology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Lin Lu
- Department of Endocrinology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Xiaorong Hou
- Department of Radiation Oncology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Fuquan Zhang
- Department of Radiation Oncology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
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Khan SA, Shafiq W, Azmat U, Siddiqi AI, Alvi AM, Ashfaq S, Irfan H, Bakar MA, Asghar K. Radiation therapy outcomes of patients with pituitary macroadenoma. Biomed Rep 2022; 18:12. [PMID: 36568037 PMCID: PMC9764322 DOI: 10.3892/br.2022.1594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 11/30/2022] [Indexed: 12/13/2022] Open
Abstract
Pituitary adenomas are one of the most common benign intracranial tumors, which are normally treated with surgery along with radiation therapy and medication such as dopamine agonist in prolactinoma. The aim of the present study was to evaluate the outcome of patients with pituitary macroadenoma who underwent radiation therapy. For the present retrospective study, a total of 75 patients with pituitary macroadenoma who received radiation therapy were included. Data was acquired from the electronic medical record system of the hospital. Mean ± standard deviation of the quantitative variables, such as age and sizes of the tumors, were reported. In addition, frequencies and percentages were presented for all categorical variables. To compare the frequency distribution in radiation therapy characteristics between functional and non-functional tumors, the χ2 test or Fisher's exact test was applied, where appropriate. Kaplan-Meier survival curve was drawn to assess the progression free survival proportion. P≤0.05 was considered to indicate a statistically significant difference. In the present study, all patients (n=75) with pituitary macroadenoma were treated with radiation therapy (RT). The mean age was 38.55±1.36 years and the majority of the patients were male (43; 57.3%). The mean tumor size was 3.84±1.43 cm. In total, 66.7% were non-functional tumors whereas 33.3% were functional tumors that produce hormones in excess [growth hormone (72%), prolactin (16%), both growth hormone and prolactin (8%) and adrenocorticotropic hormone (4%)]. The overall outcome was revealed to be 92% achieving local tumor control and 28% achieving biochemical control. Hypopituitarism (38.7%) and visual acuity deterioration (9.3%) were the most common complications observed following RT. The overall progression-free survival at 2 years was 92%. In conclusion, the data of the present study suggested that local tumor control in non-functional and functional pituitary macroadenoma can be well managed with RT. However, biochemical control to normalize hormones overproduction in functional pituitary macroadenoma was not as effective as local tumor control.
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Affiliation(s)
- Sardar Ali Khan
- Department of Endocrinology, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Punjab 54000, Pakistan
| | - Waqas Shafiq
- Department of Endocrinology, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Punjab 54000, Pakistan,Correspondence to: Dr Waqas Shafiq, Department of Endocrinology, Shaukat Khanum Memorial Cancer Hospital and Research Centre, 7-A Khayaban-e-Firdousi Block R-3 Johar Town, Lahore, Punjab 54000, Pakistan
| | - Umal Azmat
- Department of Endocrinology, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Punjab 54000, Pakistan
| | - Ahmed Imran Siddiqi
- Department of Endocrinology, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Punjab 54000, Pakistan
| | - Asim Munir Alvi
- Department of Endocrinology, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Punjab 54000, Pakistan
| | - Sara Ashfaq
- Department of Endocrinology, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Punjab 54000, Pakistan
| | - Hira Irfan
- Department of Endocrinology, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Punjab 54000, Pakistan
| | - Muhammad Abu Bakar
- Department of Cancer Registry and Clinical Data Management, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Punjab 54000, Pakistan
| | - Kashif Asghar
- Department of Basic Sciences Research, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Punjab 54000, Pakistan
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Abstract
In Cushing disease (CD), radiation therapy (RT) is mostly used in the adjuvant setting in patients who have failed transsphenoidal surgery or have recurrent CD. Stereotactic radiotherapy (SRT) is administered as either single or several sessions, and the most commonly used modalities include photon source (Gamma Knife, CyberKnife, and LINAC) or heavy particles (protons). In multicenter studies, Gamma Knife SRT can lead to biochemical control in 80%, with medial time to remission approximately 15 mos, and 70% recurrence free at 10 years. Conventional RT (CRT) consists of administration of small daily fractions over six weeks, with cumulative dose of 45-50 Gy. Biochemical control is achieved in up to 64% of patients with CRT. Choice of radiation modality includes convenience for patients (SRT is more convenient) and proximity to critical structures. Both forms of RT can result in hypopituitarism. RT remains an important modality for the treatment of patients with CD.
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Affiliation(s)
- Laurence Katznelson
- Departments of Neurosurgery and Medicine, Stanford University School of Medicine, Stanford, CA, United States.
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Update in Pathogenesis, Diagnosis, and Therapy of Prolactinoma. Cancers (Basel) 2022; 14:cancers14153604. [PMID: 35892862 PMCID: PMC9331865 DOI: 10.3390/cancers14153604] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/20/2022] [Accepted: 07/22/2022] [Indexed: 02/01/2023] Open
Abstract
Simple Summary This review updates recent advances in the pathogenesis, diagnosis, and therapy of prolactinoma. Prolactinomas, comprising 30–50% of all pituitary neuroendocrine tumors, frequently occur in females aged 20 to 50 and cause hypogonadism and infertility. In typical cases, female patients exhibit galactorrhea and amenorrhea due to serum prolactin (PRL) elevation, and during pregnancy, they should be carefully treated. During diagnosis, other causes of hyperprolactinemia must be excluded, and an MRI is useful for detecting pituitary neuroendocrine tumors. For the treatment of prolactinoma, dopamine agonists are effective in decreasing PRL levels and shrinking tumor size in most patients. Surgical treatment is recommended for patients who are resistant or intolerant to dopamine agonists. This review also discusses giant and malignant prolactinomas, prolactinoma-associated pregnancy, and new therapeutic approaches. Abstract Prolactinomas comprise 30–50% of all pituitary neuroendocrine tumors, frequently occur in females aged 20 to 50, and cause hypogonadism and infertility. In typical cases, female patients exhibit galactorrhea and amenorrhea due to serum prolactin (PRL) elevation, and patients during pregnancy should be carefully treated. During diagnosis, other causes of hyperprolactinemia must be excluded, and an MRI is useful for detecting pituitary neuroendocrine tumors. For treating prolactinoma, dopamine agonists (DAs) are effective for decreasing PRL levels and shrinking tumor size in most patients. Some DA-resistant cases and the molecular mechanisms of resistance to a DA are partially clarified. The side effects of a DA include cardiac valve alterations and impulse control disorders. Although surgical therapies are invasive, recent analysis shows that long-term remission rates are higher than from medical therapies. The treatments for giant or malignant prolactinomas are challenging, and the combination of medication, surgery, and radiation therapy should be considered. Regarding pathogenesis, somatic SF3B1 mutations were recently identified even though molecular mechanisms in most cases of prolactinoma have not been elucidated. To understand the pathogenesis of prolactinomas, the development of new therapeutic approaches for treatment-resistant patients is expected. This review updates the recent advances in understanding the pathogenesis, diagnosis, and therapy of prolactinoma.
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Liu W, Fleseriu M. Individualized acromegaly treatment: Is stereotactic radiation therapy changing the paradigm? Front Endocrinol (Lausanne) 2022; 13:1034576. [PMID: 36589803 PMCID: PMC9797540 DOI: 10.3389/fendo.2022.1034576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 11/21/2022] [Indexed: 12/16/2022] Open
Affiliation(s)
- Winnie Liu
- Department of Medicine, Division of Endocrinology, Diabetes and Clinical Nutrition, Oregon Health & Science University, Portland, OR, United States
| | - Maria Fleseriu
- Department of Medicine, Division of Endocrinology, Diabetes and Clinical Nutrition, Oregon Health & Science University, Portland, OR, United States
- Department of Neurological Surgery, Oregon Health & Science University, Portland, OR, United States
- Pituitary Center, Oregon Health & Science University, Portland, OR, United States
- *Correspondence: Maria Fleseriu,
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Yan JL, Chen MY, Chen YL, Chuang CC, Hsu PW, Wei KC, Chang CN. Surgical Outcome and Evaluation of Strategies in the Management of Growth Hormone-Secreting Pituitary Adenomas After Initial Transsphenoidal Pituitary Adenectomy Failure. Front Endocrinol (Lausanne) 2022; 13:756855. [PMID: 35498411 PMCID: PMC9048041 DOI: 10.3389/fendo.2022.756855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 03/09/2022] [Indexed: 12/02/2022] Open
Abstract
Acromegaly is a systemic disease that requires multidisciplinary treatment to achieve the best clinical outcome. This study aimed to evaluate the outcomes of the endoscopic transsphenoidal approach (TSA) as the primary treatment for somatotroph adenomas and further investigate patients who had suboptimal surgical results. This retrospective study included 83 patients with somatotroph adenomas treated by TSA at our institution from 1999 to 2010. Biochemical remission was defined as hGH <1 and <2.5 ng/ml. Factors associated with failure of TSA and strategy of secondary treatments for refractory and recurrent disease were analyzed. The mean age of patients was 41.1 ± 11.3 years, and the mean follow-up time was 54.2 ± 44.3 months. Approximately 44.5% of patients had residual tumors after TSA. Larger tumor size, higher GH level before the operation, and the existence of residual tumors were associated with TSA failure. Forty-one patients had an inadequate response to TSA or a recurrent lesion, and of these patients, 37 had residual tumor after TSA. Octreotide results in good outcomes in the treatment of DGSA patients, and SRS/EXRT generates good results in treating patients who receive second treatments when remission cannot be reached 6 months after TSA operation.
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Affiliation(s)
- Jiun-Lin Yan
- Department of Neurosurgery, Keelung Chang Gung Memorial Hospital of the Chang Gung Medical Foundation, Keelung, Taiwan
- Chang Gung University, College of Medicine, Taoyuan, Taiwan
- *Correspondence: Jiun-Lin Yan, ; Chen-Nen Chang,
| | - Mao-Yu Chen
- Department of Neurosurgery, Keelung Chang Gung Memorial Hospital of the Chang Gung Medical Foundation, Keelung, Taiwan
| | - Yao-Liang Chen
- Department of Radiology, Keelung Chang Gung Memorial Hospital of the Chang Gung Medical Foundation, Keelung, Taiwan
| | - Chi-Cheng Chuang
- Chang Gung University, College of Medicine, Taoyuan, Taiwan
- Department of Neurosurgery, Chang Gung Memorial Hospital Linkou Main Branch, Taoyuan, Taiwan
| | - Peng-Wei Hsu
- Chang Gung University, College of Medicine, Taoyuan, Taiwan
- Department of Neurosurgery, Chang Gung Memorial Hospital Linkou Main Branch, Taoyuan, Taiwan
| | - Kuo-Chen Wei
- Chang Gung University, College of Medicine, Taoyuan, Taiwan
- Department of Radiology, Keelung Chang Gung Memorial Hospital of the Chang Gung Medical Foundation, Keelung, Taiwan
| | - Chen-Nen Chang
- Department of Neurosurgery, Keelung Chang Gung Memorial Hospital of the Chang Gung Medical Foundation, Keelung, Taiwan
- Chang Gung University, College of Medicine, Taoyuan, Taiwan
- Department of Neurosurgery, Xiamen Chang Gung Hospital, Xiamen, Taiwan
- *Correspondence: Jiun-Lin Yan, ; Chen-Nen Chang,
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Pituitary Adenomas: From Diagnosis to Therapeutics. Biomedicines 2021; 9:biomedicines9050494. [PMID: 33946142 PMCID: PMC8146984 DOI: 10.3390/biomedicines9050494] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/24/2021] [Accepted: 04/26/2021] [Indexed: 12/13/2022] Open
Abstract
Pituitary adenomas are tumors that arise in the anterior pituitary gland. They are the third most common cause of central nervous system (CNS) tumors among adults. Most adenomas are benign and exert their effect via excess hormone secretion or mass effect. Clinical presentation of pituitary adenoma varies based on their size and hormone secreted. Here, we review some of the most common types of pituitary adenomas, their clinical presentation, and current diagnostic and therapeutic strategies.
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Abstract
External radiation therapy (RT) directed to the pituitary gland is generally recommended in patients with Cushing's disease (CD) as adjuvant to transsphenoidal surgery, among other second-line therapies offered to patients with residual or recurrent hypercortisolism (i.e., medical treatment, repeat surgery or bilateral adrenalectomy). RT is effective for the control of tumor growth, even in invasive tumors and in Nelson's syndrome. Progress in radiation stereotactic techniques lead to improved tumor targeting and radiation delivery, thus sparing the adjacent brain structures. Stereotactic RT is associated with a 55-65% rate of cortisol normalization after several months to a few years and potentially with a lower risk of long-term complications, compared with conventional RT. Cortisol-lowering medical therapy is recommended while awaiting the radiation effects. Hypopituitarism is the most frequent side-effect, damage to optic or cranial nerves or second brain tumors are rarely reported. This review presents the updates in the efficacy and safety of the stereotactic radiation techniques in CD patients. Practical points which should be considered by the clinician before recommending RT are also presented.
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Affiliation(s)
- Monica Livia Gheorghiu
- University of Medicine and Pharmacy Carol Davila, Bucharest, Romania; National Institute of Endocrinology C.I. Parhon, Bucharest, Romania.
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Kawaguchi T, Ogawa Y, Watanabe M, Tominaga T. Aggressive Pituitary Adenoma Not Fulfilling the New High-Risk Criteria with Progression after 18-Year Stable Clinical Course: Case Report. J Neurol Surg A Cent Eur Neurosurg 2021; 83:391-395. [PMID: 33618408 DOI: 10.1055/s-0040-1722195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
BACKGROUND The World Health Organization (WHO) classification of tumors of the endocrine organs was revised in 2017. The term atypical adenoma is no longer recommended, and tumors with rapid growth, radiologic invasion, and high Ki-67 labeling index are defined as high-risk adenomas. In this article, we present the case of an aggressive pituitary adenoma not fulfilling the new high-risk criteria with extraordinary rapid progression after very long stable disease, and discuss the remaining problem of the new criteria in terms of a complicated balance between pathologic findings and clinical features. CASE DESCRIPTION A 67-year-old man was admitted with sellar tumor. Serum prolactin concentration was high at 4,552.2 ng/mL. Transsphenoidal surgery achieved subtotal removal. Histologic diagnosis was lactotroph cell adenoma, and Ki-67 labeling index was 2.6%. Postoperatively, magnetic resonance imaging revealed no evidence of tumor regrowth, but terguride or cabergoline administration was continued for slight hyperprolactinemia. Second surgery was performed 18 years after initial surgery because the tumor showed extraordinary rapid regrowth and hyperprolactinemia of 969 ng/mL. Histologic diagnosis was lactotroph cell adenoma with Ki-67 labeling index of 28.9% and positive immunoreactivity for p53. This case could be diagnosed as a high-risk adenoma from the beginning of treatment based on the WHO 2017 criteria, but the clinical course was unusually long and the indication of aggressive adjuvant therapy after initial surgery remained unsolved. CONCLUSION Pathologic confirmation for the present definition would be expected to assess the cutoff between typical adenomas and aggressive tumors.
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Affiliation(s)
| | - Yoshikazu Ogawa
- Department of Neurosurgery, Kohnan Hospital, Sendai, Miyagi, Japan
| | - Mika Watanabe
- Department of Pathology, Tohoku University Hospital, Sendai, Japan
| | - Teiji Tominaga
- Department of Neurosurgery, Tohoku University Graduate School of Medicine, Sendai, Japan
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Yamamoto M, Nakao T, Ogawa W, Fukuoka H. Aggressive Cushing's Disease: Molecular Pathology and Its Therapeutic Approach. Front Endocrinol (Lausanne) 2021; 12:650791. [PMID: 34220707 PMCID: PMC8242934 DOI: 10.3389/fendo.2021.650791] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 05/26/2021] [Indexed: 12/13/2022] Open
Abstract
Cushing's disease is a syndromic pathological condition caused by adrenocorticotropic hormone (ACTH)-secreting pituitary adenomas (ACTHomas) mediated by hypercortisolemia. It may have a severe clinical course, including infection, psychiatric disorders, hypercoagulability, and metabolic abnormalities, despite the generally small, nonaggressive nature of the tumors. Up to 20% of ACTHomas show aggressive behavior, which is related to poor surgical outcomes, postsurgical recurrence, serious clinical course, and high mortality. Although several gene variants have been identified in both germline and somatic changes in Cushing's disease, the pathophysiology of aggressive ACTHomas is poorly understood. In this review, we focused on the aggressiveness of ACTHomas, its pathology, the current status of medical therapy, and future prospects. Crooke's cell adenoma (CCA), Nelson syndrome, and corticotroph pituitary carcinoma are representative refractory pituitary tumors that secrete superphysiological ACTH. Although clinically asymptomatic, silent corticotroph adenoma is an aggressive ACTH-producing pituitary adenoma. In this review, we summarize the current understanding of the pathophysiology of aggressive ACTHomas, including these tumors, from a molecular point of view based on genetic, pathological, and experimental evidence. The treatment of aggressive ACTHomas is clinically challenging and usually resistant to standard treatment, including surgery, radiotherapy, and established medical therapy (e.g., pasireotide and cabergoline). Temozolomide is the most prescribed pharmaceutical treatment for these tumors. Reports have shown that several treatments for patients with refractory ACTHomas include chemotherapy, such as cyclohexyl-chloroethyl-nitrosourea combined with 5-fluorouracil, or targeted therapies against several molecules including vascular endothelial growth factor receptor, cytotoxic T lymphocyte antigen 4, programmed cell death protein 1 (PD-1), and ligand for PD-1. Genetic and experimental evidence indicates that some possible therapeutic candidates are expected, such as epidermal growth factor receptor tyrosine kinase inhibitor, cyclin-dependent kinase inhibitor, and BRAF inhibitor. The development of novel treatment options for aggressive ACTHomas is an emerging task.
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Affiliation(s)
- Masaaki Yamamoto
- Division of Diabetes and Endocrinology, Kobe University Hospital, Kobe, Japan
| | | | - Wataru Ogawa
- Division of Diabetes and Endocrinology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Hidenori Fukuoka
- Division of Diabetes and Endocrinology, Kobe University Hospital, Kobe, Japan
- *Correspondence: Hidenori Fukuoka,
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Lian X, Shen J, Gu Z, Yan J, Sun S, Hou X, You H, Xing B, Zhu H, Shen J, Zhang F. Intensity-modulated Radiotherapy for Pituitary Somatotroph Adenomas. J Clin Endocrinol Metab 2020; 105:5905930. [PMID: 32930785 DOI: 10.1210/clinem/dgaa651] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/11/2020] [Indexed: 01/04/2023]
Abstract
OBJECTIVE To summarize our experience in the treatment of pituitary somatotroph adenomas by fractionated intensity-modulated radiotherapy (IMRT), describe the treatment outcomes, and determine predictors. METHODS AND MATERIALS Patients with pituitary somatotroph adenoma treated by IMRT in our institution from August 2009 to January 2019 were reviewed. A total of 113 patients (37 male) were included in this study. The median age was 33 years (range 12-67 years). A total of 112 patients had not achieved complete remission after surgery, and 1 patient was treated by radiotherapy (RT) alone because she refused to surgery. The median growth hormone level was 8.6 ng/mL (range 2-186 ng/mL) and the median insulin-like growth factor (IGF)-1 level was 732 ng/mL (range 314-1485 ng/mL) pre-RT. The radiation doses to clinical target volume were usually 50-56 Gy in 25 to 30 fractions and to gross tumor volume were 60.2 Gy in 28 fractions while simultaneous integrated boost-IMRT used. After RT, the patients were followed up with endocrine testing every 6 to 12 months and magnetic resonance imaging annually. Endocrine complete remission was defined as a normal sex- and age-adjusted IGF-1 level without any pituitary suppressive medications. The outcomes including endocrine remission and new hypopituitarism after RT were recorded. The median follow-up time was 36 months (range 6-105.5 months). RESULTS The endocrine complete remission rates of IGF-1 at 1, 2, 3, and 5 years were 6%, 22.8%, 48.6%, and 74.3%, respectively. The median time to complete remission was 36.2 ± 3.8 months. The tumor control rate was 99% during the follow-up. The overall incidence of RT-induced hypopituitarism was 28.3% at the last follow-up. Univariate and multivariate analysis demonstrated that tumor sizes before RT, pre-RT IGF-1 level, and age significant predicted the endocrine remission. CONCLUSIONS IMRT is a highly effective treatment for pituitary somatotroph adenoma. Endocrine remission rate, tumor control rate, the median time to remission and hypopituitarism incidence are similar to stereotactic radiosurgery. Age and IGF-1 level before RT were significant predictive factors in endocrine remission.
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Affiliation(s)
- Xin Lian
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Jing Shen
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Zhaoqi Gu
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Junfang Yan
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Shuai Sun
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Xiaorong Hou
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Hui You
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Bing Xing
- Department of Neurosurgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Huijuan Zhu
- Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jie Shen
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
| | - Fuquan Zhang
- Department of Radiation Oncology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China
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Capatina C, Hinojosa-Amaya JM, Poiana C, Fleseriu M. Management of patients with persistent or recurrent Cushing's disease after initial pituitary surgery. Expert Rev Endocrinol Metab 2020; 15:321-339. [PMID: 32813595 DOI: 10.1080/17446651.2020.1802243] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/24/2020] [Indexed: 12/29/2022]
Abstract
INTRODUCTION Treatment options for persistent and recurrent Cushing's disease (CD) include an individualized approach for repeat surgery, medical treatment, radiation therapy (RT), and bilateral adrenalectomy (BLA). AREAS COVERED In this expert opinion perspective, the authors review the latest treatment(s) for persistent/recurrent CD. A PubMed search was undertaken (English articles through May 2020) and relevant articles discussed. Repeat pituitary surgery should be considered in most patients with proven hypercortisolism; there is potential for cure with low risk of major complications. Medical therapy is valuable either alone, while awaiting the effects of RT, or in preparation for BLA. Medical therapy includes steroidogenesis inhibitors, agents that act at the pituitary or glucocorticoid receptor level, and novel agents in development. Radiation therapy has been used successfully to treat CD, but hypopituitarism risk and delayed efficacy (improved with radiosurgery) are major drawbacks. Laparoscopic BLA is safe and effective in patients with severe, difficult-to-manage hypercortisolism, but long-term follow-up is required as corticotroph tumor progression can develop. EXPERT OPINION Treatment of persistent/recurrent CD is challenging. Most patients require >1 therapy to achieve long-lasting remission. There is currently no ideal single treatment option that provides high and rapid efficacy, low adverse effects, and preserves normal pituitary-adrenal axis function.
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Affiliation(s)
- Cristina Capatina
- Department of Endocrinology, Carol Davila University of Medicine and Pharmacy, C.I. Parhon National Institute of Endocrinology , Bucharest, Romania
| | - José Miguel Hinojosa-Amaya
- Departments of Medicine (Endocrinology) and Neurological Surgery, and Northwest Pituitary Center, Oregon Health & Science University , Portland, Oregon, USA
- Endocrinology Division, Department of Medicine, Hospital Universitario Dr. José E. González, Universidad Autónoma De Nuevo León , Monterrey, Nuevo León, Mexico
| | - Catalina Poiana
- Department of Endocrinology, Carol Davila University of Medicine and Pharmacy, C.I. Parhon National Institute of Endocrinology , Bucharest, Romania
| | - Maria Fleseriu
- Departments of Medicine (Endocrinology) and Neurological Surgery, and Northwest Pituitary Center, Oregon Health & Science University , Portland, Oregon, USA
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