Addition of exenatide to obese, insulin-treated patients can improve glycaemia and weight. Adverse events were statistically but probably not clinically significantly higher, but combination treatment was less well tolerated. Overall, exenatide was less effective in lowering HbA1c among insulin-treated patients, although significant number of insulin-treated patients still achieved significant HbA1c, weight and insulin reductions. Further research into identifying obese, insulin-treated patients who will tolerate and benefit from exenatide treatment is urgently needed.

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Context Germline mutations in the aryl hydrocarbon receptor-interacting protein (AIP) gene are responsible for a subset of familial isolated pituitary adenoma (FIPA) cases and sporadic pituitary neuroendocrine tumors (PitNETs). Objective To compare prospectively diagnosed AIP mutation-positive (AIPmut) PitNET patients with clinically presenting patients and to compare the clinical characteristics of AIPmut and AIPneg PitNET patients. Design 12-year prospective, observational study. Participants & Setting We studied probands and family members of FIPA kindreds and sporadic patients with disease onset ≤18 years or macroadenomas with onset ≤30 years (n = 1477). This was a collaborative study conducted at referral centers for pituitary diseases. Interventions & Outcome AIP testing and clinical screening for pituitary disease. Comparison of characteristics of prospectively diagnosed (n = 22) vs clinically presenting AIPmut PitNET patients (n = 145), and AIPmut (n = 167) vs AIPneg PitNET patients (n = 1310). Results Prospectively diagnosed AIPmut PitNET patients had smaller lesions with less suprasellar extension or cavernous sinus invasion and required fewer treatments with fewer operations and no radiotherapy compared with clinically presenting cases; there were fewer cases with active disease and hypopituitarism at last follow-up. When comparing AIPmut and AIPneg cases, AIPmut patients were more often males, younger, more often had GH excess, pituitary apoplexy, suprasellar extension, and more patients required multimodal therapy, including radiotherapy. AIPmut patients (n = 136) with GH excess were taller than AIPneg counterparts (n = 650). Conclusions Prospectively diagnosed AIPmut patients show better outcomes than clinically presenting cases, demonstrating the benefits of genetic and clinical screening. AIP-related pituitary disease has a wide spectrum ranging from aggressively growing lesions to stable or indolent disease course.

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A 44‐year‐old South Asian woman, with type 2 diabetes requiring insulin, presented with multiple syncopal episodes. Her diabetes was complicated by peripheral neuropathy, diabetic retinopathy and nephropathy. She also had features of autonomic neuropathy. Short synacthen test ruled out adrenal insufficiency; thyroid function was normal. HbA1c was elevated at 14.6% (136mmol/mol). Abdominal computed tomography showed grossly dilated bladder (9.5cm x 14cm x 17.5cm), compressing the mid‐ureter. The size suggested an on‐going chronic process, consistent with diabetic cystopathy.An indwelling urethral catheter relieved the bladder distension and the patient was later successfully educated to void the bladder by the clock rather than bladder sensation. Euglycaemia was achieved with twice‐daily pre‐mixed analogue insulin.Diabetic cystopathy is an under‐diagnosed complication of diabetes. Most contemporary investigators believe that the aetiology is multifactorial, including disturbances of the bladder detrusor muscle, urethra, autonomic nerves and perhaps the urothelium. This most troublesome of all the genitourinary complications of diabetes is often overlooked. Copyright © 2011 John Wiley & Sons.