Concurrent insulinoma with mosaic Turner syndrome: A case report

Wang,Shaoyun; Yang,Lijuan; Li,Jie; Mu,Yiming

doi:10.3892/etm.2015.2167

Concurrent insulinoma with mosaic Turner syndrome: A case report

Authors:
- Shaoyun Wang
- Lijuan Yang
- Jie Li
- Yiming Mu
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Affiliations: Department of Endocrinology and Metabolism, Chinese PLA General Hospital, Chinese PLA Medical College, Beijing 100853, P.R. China, Department of Pathology, Chinese PLA General Hospital, Chinese PLA Medical College, Beijing 100853, P.R. China
Published online on: January 5, 2015 https://doi.org/10.3892/etm.2015.2167
Pages: 801-804

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Abstract

Turner syndrome is a chromosomal abnormality in which the majority of patients have a 45XO karyotype, while a small number have a 45XO/47XXX karyotype. Congenital adrenal hyperplasia has been previously reported in patients with Turner syndrome. Although insulinomas are the most common type of functioning pancreatic neuroendocrine tumor and have been reported in patients with multiple endocrine neoplasias, the tumors have not been reported in patients with mosaic Turner syndrome. The present study reports the first case of an insulinoma in a patient with 45XO/47XXX mosaic Turner syndrome. The patient suffered from recurrent hypoglycemia, which was relieved following ingestion of glucose or food. A 5‑h glucose tolerance test was performed and the levels of glucose, C‑Peptide and insulin were detected. In addition, computed tomography (CT) and ultrasound scanning were performed to evaluate the possibility of an insulinoma. Pathological examination and karyotyping were performed on a surgical specimen and a whole blood sample, respectively. The patient was found to suffer from premature ovarian failure, and a physical examination was consistent with a diagnosis of Turner syndrome. An ultrasound scan demonstrated streak ovaries and the patient was found to have a 45XO/47XXX karyotype. Furthermore, a lesion was detected in the pancreas following CT scanning, which was identified as an insulinoma following surgical removal and histological examination. In conclusion, the present study reports the first case of an insulinoma in a patient with mosaic Turner syndrome. Since mosaic Turner syndrome and insulinoma are rare diseases, an association may exist that has not been previously identified.

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