hrp0082p1-d3-12 | Adrenals & HP Axis (1) | ESPE2014

Adrenal Rest Tumors in Patients with Primary Adrenal Insufficiency

Abali Zehra Yavas , Saka Nurcin , Erol Oguz Bulent , Aydin Banu Kucukemre , Guran Tulay , Bas Firdevs , Poyrazoglu Sukran , Bundak Ruveyde , Darendeliler Feyza

Background: Gonads containing adrenal rests may enlarge in response to chronic overstimulation by ACTH in diseases with ACTH hypersecretion such as poorly controlled congenital adrenal hyperplasia (CAH), Addison’s disease and Nelson’s syndrome. Testicular adrenal rest tumors (TART) are present in childhood in CAH patients and frequency in adults may be up to 50–95%. Ovarian adrenal rest tumors (ART) are less frequently detected. TART is decribed less in patients...

hrp0084p2-320 | DSD | ESPE2015

The Evaluation of AR and SRD5A2 Gene Mutations in 87 Patients with 46, XY DSD Children in Turkey

Akcan Nese , Toksoy Guven , Uyguner Oya , Saka Nurcin , Altunoglu Umut , Abali Zehra Yavas , Genens Mikayir , Poyrazoglu Sukran , Bas Firdevs , Bundak Ruveyde , Kayserili Hulya , Darendeliler Feyza

Background: Main diagnosis of 46,XY disorders of sex development (DSD) with normal testosterone secretion Androgen insensivity sydrome (AIS) or 5α-reductase deficiency (5α-RD). In prepubertal period, AIS and 5α-RD present indistinguishable phenotypes that necessitate the molecular analyses for the definitive diagnosis.Objective and hypotheses: Clinical, hormonal and genetic investigation of 46,XY DSD patients who considered as PAIS or 5&#9...

hrp0084p3-1230 | Thyroid | ESPE2015

The Role of Thyroid Fine-Needle Aspiration Cytology in the Treatment and Follow-Up of Thyroid Nodules in the Paediatric Population

Genens Mikayir , Yilmaz Cansu , Ozluk Yasemin , Erol Oguz Bulent , Abali Zehra Yavas , Poyrazoglu Sukran , Bas Firdevs , Bundak Ruveyde , Firat Pinar , Bayhan Dilek Yilmaz , Darendeliler Feyza

Background: Although thyroid nodules are rare in children compared to adults, the risk of malignacy is higher. Thyroid fine-needle aspiration (FNA) is a reliable diagnostic method used in the prediction of malignancy in the evaluation of thyroid nodules together with clinical and ultrasonographic findings.Objective and hypotheses: To compare clinical, ultrasonographic, cytological and histopathological findings in patients who underwent FNA.<p class=...

hrp0094p2-278 | Growth and syndromes (to include Turner syndrome) | ESPE2021

Effects of growth hormone therapy on serum concentrations of IGF-1 in patients with Turner syndrome: High IGF-1 concentrations despite optimal dose?

Karakilic Ozturan Esin , Karagoz Nurinisa , Ceylaner Serdar , Pinar Ozturk Ayse , Derya Kardelen Al Aslı , Yavas Abali Zehra , Poyrazoglu Sukran , Bas Firdevs , Darendeliler Feyza ,

Introduction: Growth hormone (GH) treatment is used to accelerate growth in patients with Turner syndrome (TS). During treatment, evaluation of IGF-1 is strongly recommended for efficacy and safety. Some patients, despite optimum GH doses, have persistent high IGF-1 levels. In this study, we aimed to evaluate the relationship between IGF-1 levels, IGF1R and growth responses of TS patients on GH treatment.Method: 54 patie...

hrp0097p1-420 | Bone, Growth Plate and Mineral Metabolism | ESPE2023

Exploring Childhood Hypoparathyroidism: Stepwise Genetic Evaluation Approach

Gurpinar Tosun Busra , Alavanda Ceren , Kahveci Ahmet , Kurt İlknur , Kelestemur Elif , Yavas Abali Zehra , Helvacioglu Didem , Guran Tulay , Bereket Abdullah , Ata Pınar , Turan Serap

Background: Primary hypoparathyroidism (HP) is a rare disease characterized by hypocalcemia, hyperphosphatemia and low/inappropriately normal parathyroid hormone (PTH) levels. We aim to characterize the clinical findings and molecular aetiology of childhood HP in our cohort.Method: DiGeorge-VCFS FISH analysis was performed on all patients (n=28) as the initial step after the diagnosis. In whom, FISH analysis was...

hrp0097p1-340 | Multisystem Endocrine Disorders | ESPE2023

Long-Term Endocrine Complications of Medulloblastoma and The Effect of Growth Hormone Therapy on Final Height

Kelestemur Elif , Helvacioglu Didem , Gurpinar Tosun Busra , Kahveci Ahmet , Kurt Ilknur , Yavas Abali Zehra , Haliloglu Belma , Guran Tulay , Bereket Abdullah , Turan Serap

Introduction: Medulloblastoma is the most common central nervous system tumour in children representing, approximately 20% of childhood brain tumours. Cure can be achieved with surgery, chemotherapy and radiotherapy. However, disease survivors encounter long term endocrine complications including short stature due to growth hormone (GH) deficiency and spinal radiotherapy.Patients and Methods: We aimed to investigate long...

hrp0097p1-530 | Multisystem Endocrine Disorders | ESPE2023

Anthropometric, clinical, and molecular genetic characteristics of 42 patients with RASopathies

Yavas Abali Zehra , Bilge Geckinli Bilgen , Eltan Mehmet , Kahveci Ahmet , Gurpinar Tosun Busra , Helvacioglu Didem , Guran Tulay , Bereket Abdullah , Turan Serap

Background: RASopathies are a group of diseases with common clinical features that occur as a result of pathogenic variants in genes encoding components of the RAS/MAPK pathway. The aim of this study was to evaluate the clinical and molecular features of RASopathy cases in our pediatric endocrinology unit.Subjects and Methods: The clinical and molecular data of 42 patients (18 girls) from 39 families were evaluated, retr...

hrp0097p2-190 | Adrenals and HPA Axis | ESPE2023

Evaluation of two cases with 46,XX and 46,XY karyotypes diagnosed with 17α-hydroxylase deficiency

Kurt Ilknur , Sagsak Elif , Murat Nurhan , Gurpinar Tosun Busra , Helvacioglu Didem , Yavas Abali Zehra , Kahveci Ahmet , Kelestemur Elif , Haliloglu Belma , Turan Serap , Bereket Abdullah , Guran Tulay

Introduction: 17α-hydroxylase deficiency (17OHD) is a rare form of congenital adrenal insufficiency characterized with decreased cortisol and sex steroid biosynthesis, overproduction of ACTH, and increased mineralocorticoids. The overproduction of corticosterone hinders the symptoms of glucocorticoid deficiency and causes sodium retention, hypertension, and hypokalemia in severe cases. Affected 46,XX and 46,XY individuals are phenotypically female in the...

hrp0098rfc3.6 | Pituitary, Neuroendocrinology and Puberty 1 | ESPE2024

Final Height and Endocrine Complications in Children with Pilocytic Astrocytomas: A Retrospective Study

Tugba Canbaz Aylin , Helvacioglu Didem , Gurpinar Tosun Busra , Yavas Abali Zehra , Sahin Yener , Guran Tulay , Bereket Abdullah , Dagcinar Adnan , Turan Serap

Background/aims: Pilocytic astrocytomas (PA) are low-grade neoplasms that affect the precortical visual pathway and are most commonly detected in children and adolescents, representing 2–5% of childhood central nervous system (CNS) tumours. Optic gliomas (OPGs) can occur sporadically, or in association with neurofibromatosis type 1 (NF1). We assessed the prevalence of endocrine dysfunction in children with PA and evaluated outcomes between subgroups of P...

hrp0098rfc4.6 | Adrenals and HPA Axis 1 | ESPE2024

Machine Learning-Based Decision Tree Model for the Diagnosis of Congenital Disorders of Adrenal Steroidogenesis Using LC-MS/MS-based Plasma Steroid Hormone Profiles

Noyan Erçetin Atam , Gurpinar Tosun Busra , Kirkgoz Tarik , Yavas Abali Zehra , Eltan Mehmet , Akbarzade Azad , Yaman Ali , Turan Serap , Bereket Abdullah , Yalcin Arga Kazim , Guran Tulay

Background: Congenital disorders of adrenal steroidogenesis (CDAS) result in various adverse clinical outcomes including adrenal insufficiency, hypertension, androgen excess, or differences in sex development, depending on the specific enzyme deficiency involved. Rapid and precise diagnosis of these conditions facilitates improved short-term and long-term clinical management. The requirement for clinical expertise may lead to delays in the diagnostic process.<...