Endocrine Abstracts

Introduction: Paraganglioma (PGL) is a neuroendocrine tumor (NET) originating from the neural crest cells. Head and neck paraganglioma (HNPGL) often presents as an asymptomatic slow growing tumor and is rarely functional. Adrenal incidentaloma (AI) is defined as a silent adrenal mass detected on imaging performed for unrelated disorder. Malignant peripheral nerve sheath tumor (MPNST) is a variety of soft tissue sarcoma derived from cells of neural crest....

Introduction: The association between pituitary adenoma and hyperparathyroidism is the main feature of multiple endocrine neoplasia (MEN) 1 but also for a novel MEN4 syndrome. Germline mutations in the cyclin-dependent kinase (CDK) inhibitor 1b gene (CDKN1B) were identified in patients with MEN4. The most common phenotype of the 19 established cases of MEN4 that have been described since now is primary hyperparathyroidism (PHPT) followed by pituitary adenomas. There are a limi...

Introduction: Ovarian hyperthecosis (OH) is a rare condition, reported only in case reports and small case series and is characterized by severe hyperandrogenism leading to virilisation and insulin resistance. The term hyperthecosis refers to the presence of luteinized thecal cells within a hyperplastic ovarian stroma and the pathophysiology of this remains poorly understood. Despite the fact that hyperandrogenism is a relatively common clinical problem, severe hyperandrogenis...