Endocrine Abstracts

AimsTo define the prevalence of hyponatraemia (serum sodium <135 mmol/l) on our medical admissions unit and review the laboratory investigations, diagnosis and management of patients with critical or severe hyponatraemia (serum sodium <120 mmol/l).MethodsSerum sodium levels requested from the medical admissions unit over a six-month period were retrospectively collated. Case notes and biochemistry dat...

Case report: A 56-year old man presented with a 3 month history of painful bilateral gynaecomastia and sexual dysfunction. Investigations revealed hypogonadotrophic hypogonadism with markedly elevated serum E2, but otherwise normal baseline anterior pituitary function. Tumour markers were negative and adrenal androgens and LFTs were normal. Imaging identified a ∼6 cm right adrenal mass. Preoperative workup excluded phaechromocytoma, but identified low-grade, ACTH-indepen...