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V G Pluimakers Princess Máxima Centre for Paediatric Oncology, Utrecht, The Netherlands

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M van Waas Department of Paediatric Oncology/Haematology, Erasmus MC–Sophia Children’s Hospital, Rotterdam, The Netherlands

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C W N Looman Department of Public Health, Erasmus MC, Rotterdam, The Netherlands

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M P de Maat Department of Haematology, Erasmus MC, Rotterdam, The Netherlands

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R de Jonge Department of Clinical Chemistry, Erasmus MC, Rotterdam, The Netherlands

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P Delhanty Section Endocrinology, Department of Medicine, Erasmus MC, Rotterdam, The Netherlands

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M Huisman Section Endocrinology, Department of Medicine, Erasmus MC, Rotterdam, The Netherlands

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F U S Mattace-Raso Section Geriatric Medicine, Department of Medicine, Erasmus MC, Rotterdam, The Netherlands

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M M van den Heuvel-Eibrink Princess Máxima Centre for Paediatric Oncology, Utrecht, The Netherlands

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S J C M M Neggers Princess Máxima Centre for Paediatric Oncology, Utrecht, The Netherlands
Section Endocrinology, Department of Medicine, Erasmus MC, Rotterdam, The Netherlands

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incidence under the age of 5 years and a presentation predominantly in the abdomen. Treatment often consists of a combination of surgery (nephrectomy and/or adrenalectomy), radiotherapy and/or intensive chemotherapy. Because of increased survival rates, long

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Julie M Silverstein Division of Endocrinology, Metabolism and Lipid Research, Washington University School of Medicine, 660 South Euclid Avenue, Campus Box 8127, St Louis, Missouri 63110, USA

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psychosocial profile (14) . This includes increased anxiety, body image distortion, depression, impaired short- and long-term memory, and social withdrawal. Surgery, medical therapy, and radiotherapy are the current multimodal treatment options available for

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Bernardo Maia Neuroendocrinology Research Center/Endocrinology Division – Medical School and Hospital Universitário Clementino Fraga Filho – Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil

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Leandro Kasuki Neuroendocrinology Research Center/Endocrinology Division – Medical School and Hospital Universitário Clementino Fraga Filho – Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
Neuroendocrinology Division – Instituto Estadual do Cérebro Paulo Niemeyer, Rio de Janeiro, Brazil
Endocrinology Division – Hospital Federal de Bonsucesso, Rio de Janeiro Brazil

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Mônica R Gadelha Neuroendocrinology Research Center/Endocrinology Division – Medical School and Hospital Universitário Clementino Fraga Filho – Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
Neuroendocrinology Division – Instituto Estadual do Cérebro Paulo Niemeyer, Rio de Janeiro, Brazil
Neuropatology and Molecular Genetics Laboratory – Instituto Estadual do Cérebro Paulo Niemeyer, Rio de Janeiro, Brazil

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therapy and radiotherapy ( 4 , 6 , 7 ). Current treatments Surgical treatment Surgery is the gold standard treatment of acromegaly since it represents the only therapy capable of rapidly curing acromegaly ( 4 ). With experienced pituitary

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Wenhao Lin Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China

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Jun Dai Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China

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Jialing Xie Department of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China

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Jiacheng Liu Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China

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Fukang Sun Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China

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Xin Huang Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China

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Wei He Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China

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Chen Fang Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China

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Juping Zhao Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China

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Danfeng Xu Department of Urology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China

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.3)  >175 48 (13.1) 2 (4.0) Radiotherapy <0.001  No 301 (82.2) 30 (58.8)  Yes 65 (17.8) 21 (41.2) Chemotherapy 0.029  No/unknown 189 (51.6) 18 (35.3)  Yes 177 (48.4) 33 (64

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G Giuffrida Endocrine Unit of University Hospital ‘AOU Policlinico G. Martino’, Messina, Italy
PhD School of Clinical and Experimental Biomedical Sciences, University of Messina, Messina, Sicily, Italy

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F Ferraù Endocrine Unit of University Hospital ‘AOU Policlinico G. Martino’, Messina, Italy
Department of Human Pathology ‘G. Barresi’, University of Messina, Messina, Sicily, Italy

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R Laudicella Nuclear Medicine Unit of University Hospital ‘AOU Policlinico G. Martino’, Messina, Italy
Department of Biomorphology, University of Messina, Messina, Sicily, Italy

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O R Cotta Department of Human Pathology ‘G. Barresi’, University of Messina, Messina, Sicily, Italy

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E Messina Endocrine Unit of University Hospital ‘AOU Policlinico G. Martino’, Messina, Italy

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F Granata Department of Biomorphology, University of Messina, Messina, Sicily, Italy
Neuroradiology Unit of University Hospital ‘AOU Policlinico G. Martino’, Messina, Italy

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F F Angileri Department of Biomorphology, University of Messina, Messina, Sicily, Italy
Neurosurgery Unit of University Hospital ‘AOU Policlinico G. Martino’, Messina, Italy

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A Vento Nuclear Medicine Unit of University Hospital ‘AOU Policlinico G. Martino’, Messina, Italy
Department of Biomorphology, University of Messina, Messina, Sicily, Italy

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A Alibrandi Department of Economics, University of Messina, Messina, Sicily, Italy

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S Baldari Nuclear Medicine Unit of University Hospital ‘AOU Policlinico G. Martino’, Messina, Italy
Department of Biomorphology, University of Messina, Messina, Sicily, Italy

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S Cannavò Endocrine Unit of University Hospital ‘AOU Policlinico G. Martino’, Messina, Italy
PhD School of Clinical and Experimental Biomedical Sciences, University of Messina, Messina, Sicily, Italy
Department of Human Pathology ‘G. Barresi’, University of Messina, Messina, Sicily, Italy

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‘invasive’ or ‘aggressive’ ( 1 ). Moreover, the term ‘giant’ adenoma is usually applied to those tumors exceeding 40 mm in maximum diameter ( 2 ). In PT patients, multimodal treatment, including neurosurgery, drugs and radiotherapy, is generally effective

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Carina Hasenoehrl Institute of Pathophysiology and Immunology, Center of Molecular Medicine, Medical University of Graz, Graz, Austria

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Gert Schwach Institute of Pathophysiology and Immunology, Center of Molecular Medicine, Medical University of Graz, Graz, Austria

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Nassim Ghaffari-Tabrizi-Wizsy Institute of Pathophysiology and Immunology, Center of Molecular Medicine, Medical University of Graz, Graz, Austria
SFL Chicken CAM Lab, Institute of Pathophysiology and Immunology, Medical University of Graz, Graz, Austria

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Robert Fuchs Institute of Pathophysiology and Immunology, Center of Molecular Medicine, Medical University of Graz, Graz, Austria

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Nadine Kretschmer Department of Pharmacognosy, Institute of Pharmaceutical Sciences, University of Graz, Graz, Austria

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Rudolf Bauer Department of Pharmacognosy, Institute of Pharmaceutical Sciences, University of Graz, Graz, Austria

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Roswitha Pfragner Institute of Pathophysiology and Immunology, Center of Molecular Medicine, Medical University of Graz, Graz, Austria

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New treatment options are needed for medullary thyroid carcinoma (MTC), a highly metastasizing neuroendocrine tumor that is resistant to standard radiotherapy and chemotherapy. We show that the following shikonin derivatives inhibit cell proliferation and cell viability of the MTC cell line TT: acetylshikonin, β,β-dimethylacrylshikonin, shikonin and a petroleum ether extract of the roots of Onosma paniculata containing several shikonin derivatives. The unsubstituted shikonin derivative was found to be the most effective compound with an IC50 of 1.1 µM. The cell viability of normal human skin fibroblasts, however, was not affected by the tested substances, indicating that shikonin derivatives might be selectively toxic for cancer cells. We further report that migration and invasion of TT cells were inhibited at non-toxic concentrations. Finally, shikonin was tested in vivo using the chick chorioallantoic membrane assay, where it significantly reduced tumor growth by inhibiting cell proliferation and inducing apoptosis. In summary, our results suggest that shikonin derivatives have the potential for the treatment of medullary thyroid carcinomas.

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B C M Hermans Department of Pulmonary Diseases, GROW School for Oncology & Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands

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J L Derks Department of Pulmonary Diseases, GROW School for Oncology & Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands

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H J M Groen Department of Pulmonary Diseases, University of Groningen and University Medical Centre, Groningen, The Netherlands

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J A Stigt Department of Pulmonary Diseases, Isala Hospital, Zwolle, The Netherlands

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R J van Suylen Pathology-DNA, Jeroen Bosch Hospital, ‘s Hertogenbosch, The Netherlands

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L M Hillen Department of Pathology, GROW School for Oncology & Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands

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E C van den Broek PALGA Foundation, Utrecht, The Netherlands

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E J M Speel Department of Pathology, GROW School for Oncology & Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands

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A-M C Dingemans Department of Pulmonary Diseases, GROW School for Oncology & Developmental Biology, Maastricht University Medical Centre, Maastricht, The Netherlands

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). Furthermore, we identified one additional LCNEC patient treated in our own hospital with lobectomy and stereotactic radiotherapy targeting his solitary brain metastasis (2015). Clinical characteristics and survival data were retrieved from medical records

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Ichelle Maa van Roessel Department of Pediatric Endocrinology, Wilhelmina Children's Hospital, University Medical Center Utrecht, AB Utrecht, The Netherlands
Princess Máxima Center for Pediatric Oncology, AB Utrecht, The Netherlands

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Boudewijn Bakker Department of Pediatric Endocrinology, Wilhelmina Children's Hospital, University Medical Center Utrecht, AB Utrecht, The Netherlands
Princess Máxima Center for Pediatric Oncology, AB Utrecht, The Netherlands

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Hanneke M van Santen Department of Pediatric Endocrinology, Wilhelmina Children's Hospital, University Medical Center Utrecht, AB Utrecht, The Netherlands
Princess Máxima Center for Pediatric Oncology, AB Utrecht, The Netherlands

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Wassim Chemaitilly Division of Pediatric Endocrinology, UPMC Children’s Hospitalof Pittsburgh, Pittsburgh, Pennsylvania, USA

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. Safety of growth hormone replacement GH deficiency is among the most frequently reported endocrine complications in children treated for brain tumors and CCS with a history of tumor, surgery, or radiotherapy involving the hypothalamic–pituitary region

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Mette Marie Baunsgaard Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
Department of Pediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark

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Anne Sophie Lind Helligsoe Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
Department of Pediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark

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Louise Tram Henriksen Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
Department of Pediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark

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Torben Stamm Mikkelsen Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
Department of Pediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark

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Michael Callesen Department of Paediatrics, Odense University Hospital, Odense, Funen, Denmark

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Britta Weber The Danish Center for Particle Therapy, Aarhus University Hospital, Aarhus, Denmark

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Henrik Hasle Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
Department of Pediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark

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Niels Birkebæk Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
Department of Pediatrics and Adolescent Medicine, Aarhus University Hospital, Aarhus, Denmark
Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark

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last 5 decades ( 3 , 4 ), due to treatment improvements with targeted cranial radiotherapy (CR) in combination with chemotherapy and improved surgery techniques ( 5 ). The overall 5-year survival rate is now approaching 83% in the Nordic countries ( 6

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Keina Nishio Department of Obstetrics and Gynecology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki-city, Osaka 569-8686, Japan

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Akiko Tanabe Department of Obstetrics and Gynecology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki-city, Osaka 569-8686, Japan

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Risa Maruoka Department of Obstetrics and Gynecology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki-city, Osaka 569-8686, Japan

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Kiyoko Nakamura Department of Obstetrics and Gynecology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki-city, Osaka 569-8686, Japan

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Masaaki Takai Department of Obstetrics and Gynecology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki-city, Osaka 569-8686, Japan

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Tatsuharu Sekijima Department of Obstetrics and Gynecology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki-city, Osaka 569-8686, Japan

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Satoshi Tunetoh Department of Obstetrics and Gynecology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki-city, Osaka 569-8686, Japan

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Yoshito Terai Department of Obstetrics and Gynecology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki-city, Osaka 569-8686, Japan

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Masahide Ohmichi Department of Obstetrics and Gynecology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki-city, Osaka 569-8686, Japan

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-oophorectomy, and a pelvic lymphadenectomy, followed by CCRT. Pelvic radiotherapy was delivered using a 10 MV X-ray from a linear accelerator with the anteroposterior parallel opposing technique. The superior margin of the external radiation field was placed on the

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