Endocrine Abstracts

We report the case of a 52 year old gentleman who presented to Primary Care with a short history of gynaecomastia, loss of libido and erectile dysfunction. He was normally fit and well, with no past medical history and no regular medications. Initial blood tests showed low testosterone (0.7 nmol/l (normal 11–28)) with inappropriately low gonadotrophins (LH 1.2iU/l (1.5–9.3), FSH <0.1 iU/l (1.4–18.1)). Other blood tests were unremarkable (TFTs, prolactin, FBC...

Background: Overnight dexamethasone suppression tests (ONDST) are conducted to investigate patients with symptoms suggestive of cortisol hypersecretion or if an adrenal incidentaloma is identified. Cortisol levels of 50 nmol/l and above following ONDST may be related to autonomous cortisol secretion (ACS) and require further investigation. Determining likely presence of ACS is essential given reported associations with type 2 diabetes mellitus (T2DM), obesity, cardiovascular d...

Background: Central hypothyroidism can be difficult to diagnose as TSH values often reside within the normal range. The Endocrine Society clinical guideline for hormone replacement in hypopituitarism suggests levothyroxine is indicated for treatment of secondary hypothyroidism where fT4 levels decrease by ≥20%. To determine the reliability of this biochemical marker of secondary hypothyroidism we evaluated evolution of TFTs over time within a cohort of NFPA.<p class=...