Introduction: Insulin induced edema (IIE) is a rare condition, usually found in newly diagnosed diabetes patients, either after insulin treatment initiation or after dose increment. It is a self-limited process, rarely associated with serosal effusions. Teenage girls with type 1 diabetes (T1DM) are most commonly affected. Patient and Methods: A 12-year-old girl was diagnosed with ketoacidosis (DKA). Seven days after initiation of the insulin treatment, at a stable total daily dose of insulin (TDDI) of 0.55 IU/kg, she came with two kilograms weight gain in only two days and edema of the feet and calves. Ultrasound of the heart found a 7 mm pericardial effusion. The diagnostic workout included clinical examination, biochemical, hormonal, allergen analyses and imaging which excluded other known causes of swelling. Conclusions: We describe an adolescent girl with newly diagnosed T1DM and a rare association of peripheral insulin-induced edema and pericardial effusion. Short-term diuretic treatment and salt restriction resolved this rare complication of insulin treatment.
Alström syndrome (ALMS) is an autosomal recessive disorder characterized by multiple organ involvement, including progressive cone-rod dystrophy, sensorineural hearing loss, childhood obesity, and type 2 diabetes mellitus. Pathogenic variants in the ALMS1 gene are the known cause for the occurrence of this devastating condition. Here we report on a 12 year old boy referred to the University Clinic with early signs of impaired hearing and vision, obesity, and scoliosis. Central vision was first affected, followed by peripheral vision. In addition, his weight began increasing after the age of two years, reaching 78 kg at a height of 157 cm (BMI 31.64). No polydactyly was present. His mental development was normal in spite of his hearing and vision impairments. There was acanthosis nigricans on the neck. ECG and the cardiac ultrasound were normal. At the age of 12 years, his testicles are 12 ml and his pubertal status is P2 A2. OGTT revealed impaired glucose tolerance with elevated insulin concentrations 121ulU/mL (reference range 2,00-29,1 ulU/mL). Renal function was unaffected, liver functions were normal. Uric acid and lipids were within normal plasma concentrations. A Whole Exome Sequencing was performed and a homozygous ALMS1 pathogenic, frameshift gene variant (LRG_741t1(ALMS1):c.4156dup; p.Thr1386AsnfsTer15) was determined as the cause of the disease. Both parents were carriers for the variant. The absence of mental retardation and polydactyly differentiates Alström and Bardet-Biedle syndrome.
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