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Tomomi Nakao First Department of Internal Medicine, Wakayama Medical University, Wakayama City, Wakayama, Japan

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Ken Takeshima First Department of Internal Medicine, Wakayama Medical University, Wakayama City, Wakayama, Japan

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Hiroyuki Ariyasu First Department of Internal Medicine, Wakayama Medical University, Wakayama City, Wakayama, Japan

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Chiaki Kurimoto First Department of Internal Medicine, Wakayama Medical University, Wakayama City, Wakayama, Japan

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Shinsuke Uraki First Department of Internal Medicine, Wakayama Medical University, Wakayama City, Wakayama, Japan

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Shuhei Morita First Department of Internal Medicine, Wakayama Medical University, Wakayama City, Wakayama, Japan

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Yasushi Furukawa First Department of Internal Medicine, Wakayama Medical University, Wakayama City, Wakayama, Japan

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Hiroshi Iwakura First Department of Internal Medicine, Wakayama Medical University, Wakayama City, Wakayama, Japan

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Takashi Akamizu First Department of Internal Medicine, Wakayama Medical University, Wakayama City, Wakayama, Japan

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Summary

Thyroid storm (TS) is a life-threatening condition that may suffer thyrotoxic patients. Therapeutic plasma exchange (TPE) is a rescue approach for TS with acute hepatic failure, but it should be initiated with careful considerations. We present a 55-year-old male patient with untreated Graves’ disease who developed TS. Severe hyperthyroidism and refractory atrial fibrillation with congestive heart failure aggregated to multiple organ failure. The patient was recovered by intensive multimodal therapy, but we had difficulty in introducing TPE treatment considering the risk of exacerbation of congestive heart failure due to plasma volume overload. In addition, serum total bilirubin level was not elevated in the early phase to the level of indication for TPE. The clinical course of this patient instructed delayed elevation of bilirubin until the level of indication for TPE in some patients and also demonstrated the risk of exacerbation of congestive heart failure by TPE.

Learning points:

  • Our patient with thyroid storm could be diagnosed and treated promptly using Japan Thyroid Association guidelines for thyroid storm.

  • Delayed elevation of serum bilirubin levels could make the decision of introducing therapeutic plasma exchange difficult in cases of thyroid storm with acute hepatic failure.

  • The risk of worsening congestive heart failure should be considered carefully when performing therapeutic plasma exchange.

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Yuri Tanaka Division of Neurology, Respirology, Endocrinology and Metabolism, Department of Internal Medicine, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan

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Taisuke Uchida Division of Neurology, Respirology, Endocrinology and Metabolism, Department of Internal Medicine, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan

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Hideki Yamaguchi Division of Neurology, Respirology, Endocrinology and Metabolism, Department of Internal Medicine, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan

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Yohei Kudo Division of Neurology, Respirology, Endocrinology and Metabolism, Department of Internal Medicine, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan

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Tadato Yonekawa Division of Neurology, Respirology, Endocrinology and Metabolism, Department of Internal Medicine, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan

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Masamitsu Nakazato Division of Neurology, Respirology, Endocrinology and Metabolism, Department of Internal Medicine, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan

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Summary

We report the case of a 48-year-old man with thyroid storm associated with fulminant hepatitis and elevated levels of soluble interleukin-2 receptor (sIL-2R). Fatigue, low-grade fever, shortness of breath, and weight loss developed over several months. The patient was admitted to the hospital because of tachycardia-induced heart failure and liver dysfunction. Graves’ disease with heart failure was diagnosed. He was treated with methimazole, inorganic iodide, and a β-blocker. On the day after admission, he became unconscious with a high fever and was transferred to the intensive care unit. Cardiogenic shock with atrial flutter was treated with intra-aortic balloon pumping and cardioversion. Hyperthyroidism decreased over 10 days, but hepatic failure developed. He was diagnosed with thyroid storm accompanied by fulminant hepatitis. Laboratory investigations revealed elevated levels of sIL-2R (9770 U/mL). The fulminant hepatitis was refractory to plasma exchange and plasma filtration with dialysis, and no donors for liver transplantation were available. He died of hemoperitoneum and gastrointestinal hemorrhage due to fulminant hepatitis 62 days after admission. Elevated circulating levels of sIL-2R might be a marker of poor prognosis in thyroid storm with fulminant hepatitis.

Learning points:

  • The prognosis of thyroid storm when fulminant hepatitis occurs is poor.

  • Liver transplantation is the preferred treatment for fulminant hepatitis induced by thyroid storm refractory to plasma exchange.

  • Elevated levels of soluble interleukin-2 receptor might be a marker of poor prognosis in patients with thyroid storm.

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Khaled Aljenaee Department of Endocrinology, St James Hospital, Dublin, Ireland

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Osamah Hakami Department of Endocrinology, Royal College of Surgeons in Ireland, Connolly Hospital Blanchardstown, Dublin, Ireland

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Colin Davenport Department of Endocrinology, St Columcille’s Hospital, Dublin, Ireland

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Gemma Farrell Department of Clinical Biochemistry, Connolly Hospital, Blanchardstown, Dublin, Ireland

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Tommy Kyaw Tun Department of Endocrinology, Royal College of Surgeons in Ireland, Connolly Hospital Blanchardstown, Dublin, Ireland

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Agnieszka Pazderska Department of Endocrinology, St James Hospital, Dublin, Ireland

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Niamh Phelan Department of Endocrinology, St James Hospital, Dublin, Ireland

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Marie-Louise Healy Department of Endocrinology, St James Hospital, Dublin, Ireland

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Seamus Sreenan Department of Endocrinology, Royal College of Surgeons in Ireland, Connolly Hospital Blanchardstown, Dublin, Ireland

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John H McDermott Department of Endocrinology, Royal College of Surgeons in Ireland, Connolly Hospital Blanchardstown, Dublin, Ireland

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Summary

Measurement of glycated haemoglobin (HbA1c) has been utilised in assessing long-term control of blood glucose in patients with diabetes, as well as diagnosing diabetes and identifying patients at increased risk of developing diabetes in the future. HbA1c reflects the level of blood glucose to which the erythrocyte has been exposed during its lifespan, and there are a number of clinical situations affecting the erythrocyte life span in which HbA1c values may be spuriously high or low and therefore not reflective of the true level of glucose control. In the present case series, we describe the particulars of three patients with diabetes who had spuriously low HbA1c levels as a result of dapsone usage. Furthermore, we discuss the limitations of HbA1c testing and the mechanisms by which it may be affected by dapsone in particular.

Learning points:

  • Various conditions and medications can result in falsely low HbA1c.

  • Dapsone can lead to falsely low HbA1c by inducing haemolysis and by forming methaemoglobin.

  • Capillary glucose measurement, urine glucose measurements and fructosamine levels should be used as alternatives to HbA1c for monitoring glycaemic control if it was falsely low or high.

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Chad Bisambar NHS Ayrshire and Arran, Ayr, UK

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Andrew Collier NHS Ayrshire and Arran, Ayr, UK

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Fraser Duthie NHS Greater Glasgow and Clyde, Glasgow, UK

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Carron Meney NHS Ayrshire and Arran, Ayr, UK

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Summary

A 40-year-old Caucasian female presented with hyperglycaemia, polyuria, polydipsia and weight loss of 6 kg over a 1-month period. There was no personal or family history of malignancy or diabetes mellitus. On examination, she was jaundiced with pale mucous membranes and capillary glucose was 23.1 mmol/L. Initial investigations showed iron deficiency anaemia and obstructive pattern of liver function tests. HbA1c was diagnostic of diabetes mellitus at 79 mmol/mol. Malignancy was suspected and CT chest, abdomen and pelvis showed significant dilatation of intra- and extra-hepatic biliary tree including pancreatic duct, with periampullary 30 mm mass lesion projecting into lumen of duodenum. Enlarged nodes were seen around the superior mesenteric artery. This was confirmed on MRI liver. Fasting gut hormones were normal except for a mildly elevated somatostatin level. Chromogranin A was elevated at 78 pmol/L with normal chromogranin B. Duodenoscopy and biopsy showed possible tubovillous adenoma with low-grade dysplasia, but subsequent endoscopic ultrasound and biopsy revealed a grade 1, well differentiated neuroendocrine tumour. The patient was started on insulin, transfused to Hb >8 g/dL and Whipple’s pancreatico-duodenectomy was undertaken. This showed a well-differentiated neuroendocrine carcinoma arising in duodenum (Grade G1 with Ki67: 0.5%), with areas of chronic pancreatitis and preservation of pancreatic islet cells. There was complete resolution of diabetes post Whipple’s procedure and patient was able to come of insulin treatment. Her last HBA1C was 31 mmol/mol, 4 months post tumour resection.

Learning points:

  • Diabetes mellitus and malignancy can be related.

  • A high index of suspicion is needed when diabetes mellitus presents atypically.

  • Non-functional neuroendocrine tumours can present with diabetes mellitus.

Open access
Natasha Shrikrishnapalasuriyar Department of Diabetes and Endocrinology, Royal Glamorgan Hospital, Llantrisant, UK

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Mirena Noyvirt Department of Diabetes and Endocrinology, Royal Glamorgan Hospital, Llantrisant, UK

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Philip Evans Department of Diabetes and Endocrinology, Royal Glamorgan Hospital, Llantrisant, UK

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Bethan Gibson Department of Intensive Care, Royal Glamorgan Hospital, Llantrisant, UK

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Elin Foden Department of Intensive Care, Royal Glamorgan Hospital, Llantrisant, UK

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Atul Kalhan Department of Diabetes and Endocrinology, Royal Glamorgan Hospital, Llantrisant, UK

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A 54-year-old woman was admitted to hospital with a presumed allergic reaction to a single dose of amoxicillin given for a suspected upper respiratory tract infection. She complained of chest tightness although there was no wheeze or stridor. On examination, she was pyrexial, tachycardic, hypertensive and had a diffuse mottled rash on her lower limbs. Her initial investigations showed raised inflammatory markers. She was treated in the intensive care for a presumed anaphylactic reaction with an underlying sepsis. Further investigations including CT head and CSF examination were unremarkable; however, a CT abdomen showed a 10 cm heterogeneous right adrenal mass. Based on review by the endocrine team, a diagnosis of pheochromocytoma crisis was made, which was subsequently confirmed on 24-h urinary metanephrine measurement. An emergency adrenalectomy was considered although she was deemed unfit for surgery. Despite intensive medical management, her conditioned deteriorated and she died secondary to multi-organ failure induced by pheochromocytoma crisis.

Learning points:

  • Pheochromocytoma have relatively higher prevalence in autopsy series (0.05–1%) suggestive of a diagnosis, which is often missed.

  • Pheochromocytoma crisis is an endocrine emergency characterized by hemodynamic instability induced by surge of catecholamines often precipitated by trauma and medications (β blockers, general anesthetic agents, ephedrine and steroids).

  • Pheochromocytoma crisis can mimic acute coronary syndrome, cardiogenic or septic shock.

  • Livedo reticularis can be a rare although significant cutaneous marker of underlying pheochromocytoma crisis.

Open access
Carine Ghassan Richa Rafic Hariri University Hospital, Beirut, Lebanon
Department of Medicine, Endocrinology Division, Lebanese University, Hadath, Lebanon
Endocrinology Department, Rafic Hariri University Hospital, Beirut, Lebanon

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Khadija Jamal Saad Rafic Hariri University Hospital, Beirut, Lebanon
Department of Medicine, Endocrinology Division, Lebanese University, Hadath, Lebanon
Endocrinology Department, Mount Lebanon Hospital, Beirut, Lebanon

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Ali Khaled Chaaban Rafic Hariri University Hospital, Beirut, Lebanon
Department of Radiology, Beirut Governmental University Hospital, Beirut, Lebanon
Diagnostic Radiology, Radiology Department

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Mohamad Souheil El Rawas Rafic Hariri University Hospital, Beirut, Lebanon
Department of Medicine, Endocrinology Division, Lebanese University, Hadath, Lebanon
Clinical Endocrinology, Endocrinology Department, Rafic Hariri University Hospital, Beirut, Lebanon

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Summary

The objective of the study is to report a case of acute pancreatitis secondary to hypercalcemia induced by primary hyperparathyroidism in a pregnant woman at the end of the first trimester. The case included a 32-year-old woman who was diagnosed with acute pancreatitis and severe hypercalcemia refractory to many regimens of medical therapy in the first trimester of pregnancy. She was successfully treated with parathyroidectomy in the early second trimester with complete resolution of hypercalcemia and pancreatitis. Neonatal course was unremarkable. To our best knowledge, this is a rare case when primary hyperparathyroidism and its complications are diagnosed in the first trimester of pregnancy. In conclusion, primary hyperparathyroidism is a rare life-threatening condition to the fetus and mother especially when associated with complications such as pancreatitis. Early therapeutic intervention is important to reduce the morbidity and mortality. Parathyroidectomy performed in the second trimester can be the only solution.

Learning points:

  • Learning how to make diagnosis of primary hyperparathyroidism in a woman during the first trimester of pregnancy.

  • Understanding the complications of hypercalcemia and be aware of the high mortality and sequelae in both fetus and mother.

  • Providing the adequate treatment in such complicated cases with coordinated care between endocrinologists and obstetricians to ensure optimal outcomes.

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Takatoshi Anno Department of General Internal Medicine 1, Kawasaki Medical School, Okayama, Japan

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Hideaki Kaneto Department of Diabetes, Metabolism and Endocrinology, Kawasaki Medical School, Kurashiki, Japan

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Ryo Shigemoto Department of General Internal Medicine 1, Kawasaki Medical School, Okayama, Japan

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Fumiko Kawasaki Department of General Internal Medicine 1, Kawasaki Medical School, Okayama, Japan

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Yasuhiro Kawai Department of General Internal Medicine 1, Kawasaki Medical School, Okayama, Japan

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Noriyo Urata Department of General Internal Medicine 2, Kawasaki Medical School, Okayama, Japan

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Hirofumi Kawamoto Department of General Internal Medicine 2, Kawasaki Medical School, Okayama, Japan

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Kohei Kaku Department of General Internal Medicine 1, Kawasaki Medical School, Okayama, Japan

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Niro Okimoto Department of General Internal Medicine 1, Kawasaki Medical School, Okayama, Japan

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Summary

Hypoglycemia is induced by many causes, especially over-dose of insulin or oral hypoglycemic agents in diabetic subjects. In such a case, hyperinsulinemic hypoglycemia is usually observed. On the other hand, it is important to classify secondary hypoglycemia and hypoinsulinemic hypoglycemia. Liver injury-induced hypoglycemia is one of the causes of hypoinsulinemic hypoglycemia but rarely observed in clinical practice. Herein, we experienced similar 2 cases of non-diabetic hypoinsulinemic hypoglycemia. Both of them were elderly subjects with low body weight. Furthermore, it is likely that hypoinsulinemic hypoglycemia in both subjects was triggered by severe liver injury, at least in part, due to possible limited liver glycogen store. In elderly subjects with low body weight and/or malnutrition, metabolism in the liver is reduced and glycogen accumulation is decreased. Such alteration brings out acute and marked liver injury, which finally leads to the onset of severe hypoglycemia. It is known that not only liver injury but also multiple organ failure could be induced due to extreme emaciation in subjects. It is likely that in elderly subjects with low body weight and/or malnutrition, multiple organ failure including liver failure could be induced due to the similar reason. Therefore, we should be very careful of such subjects in order to avoid the development of multiple organ failure which leads to life-threatening situations. In conclusion, we should keep in mind the possibility of hypoinsulinemic hypoglycemia when we examine severe liver injury, especially in elderly or starving subjects with low body weight and limited liver glycogen stores.

Learning points:

  • It is important to classify secondary hypoglycemia and hypoinsulinemic hypoglycemia.

  • Liver injury-induced hypoglycemia is one of the causes of hypoinsulinemic hypoglycemia but rarely observed in everyday clinical practice.

  • Herein, we reported similar 2 cases of hypoinsulinemic hypoglycemia without diabetes presumably triggered by severe liver injury.

  • In both cases, hypoglycemia was improved by glucose infusion, although their liver injury was not improved.

  • We should keep in mind the possibility of hypoinsulinemic hypoglycemia when we examine severe liver injury, especially in elderly subjects with low body weight.

Open access
Charlotte S Schömig Department of Pediatrics, University of Cologne, Cologne, Germany

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Marie-Ève Robinson Division of Endocrinology, Department of Pediatrics, McGill University Health Center, Montreal, Canada

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Julia E von Oettingen Division of Endocrinology, Department of Pediatrics, McGill University Health Center, Montreal, Canada

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Summary

Congenital hypothyroidism requires prompt treatment to prevent adverse health outcomes. Poor intestinal levothyroxine absorption can complicate management. We present a case of a term female newborn with necrotizing enterocolitis (NEC) requiring subtotal ileum resection. Congenital hypothyroidism was diagnosed by newborn screening. Treatment was complicated by intestinal malabsorption of levothyroxine. Intravenous levothyroxine substitution restored euthyroidism and supraphysiologic PO doses subsequently maintained a euthyroid state. After several months, the required levothyroxine dose was weaned down to typical recommended dosing. In conclusion, small bowel resection secondary to NEC may lead to malabsorption of oral levothyroxine. An intravenous levothyroxine dose of approximately 50% typical PO dosing is effective in providing rapid normalization of free T4 and TSH. High PO doses may be required to maintain euthyroidism. Close thyroid function monitoring and immediate therapy adjustment are essential as the individual absorption may vary widely. Normal absorption levels may be regained due to adaption of the neonatal intestines.

Learning points:

  • In neonates with malabsorption after ileum resection intravenous levothyroxine replacement should be used to provide normalization of free T4 and TSH.

  • Very high doses of up to 500% usual oral levothyroxine may be required to maintain euthyroidism. The estimated degree of malabsorption can be used to determine the initial dose.

  • Close thyroid function monitoring and immediate therapy adjustment are essential as the absorption and intestinal adaption may vary widely.

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Asma Deeb Paediatric Endocrinology Department, Mafraq Hospital, Abu Dhabi, United Arab Emirates

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Faisal Al-Zidgali Neonatology Department, Corniche Hospital, Abu Dhabi, United Arab Emirates

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Bibian N Ofoegbu Neonatology Department, Corniche Hospital, Abu Dhabi, United Arab Emirates

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Summary

Wolcott–Rallison syndrome (WRS) is a rare autosomal recessive disorder due to mutations in the EIF2AK3 gene. It is characterized by permanent neonatal diabetes mellitus, skeletal dysplasia, liver impairment, neutropenia and renal dysfunction. Liver is the most commonly affected organ and liver failure is the commonest cause of death in this syndrome. The EIF2AK3 gene encodes a transmembrane protein PERK, which is important for the cellular response to endoplasmic reticulum (ER) stress. The absence of PERK activity reduces the ER’s abilities to deal with stress, leading to cell death by apoptosis. On acquiring febrile illness, affected patients suffer from liver injury, which may progress into liver failure and death. Renal involvement is less common and is mainly in the form of functional renal impairment at the advanced stage of the disease. Structural renal anomalies have not been reported in WRS. We report a 6-month-old girl who presented with neonatal diabetes on day 1 of life. Her genetic testing confirmed WRS due to missense mutation in the EIF2AK3 gene (c.2867G > A, p.Gly956Glu). Parents are first-degree cousins and both are heterozygous carriers to the mutation. 2 paternal uncles had the same mutation and died of liver disease at 1 and 14 years of age. Neither had a renal disease. She presented with hematuria during a febrile illness at the age of 5 months. Ultrasound scan showed right ectopic multicystic dysplastic kidney (MCDK). To the best of our knowledge, this is the first patient with WRS who is reported to have an MCDK disease.

Learning points:

  • Neonatal diabetes should be considered in babies presenting with early hyperglycemia particularly if there is a family history.

  • Genetic diagnosis in neonatal diabetes enables disease confirmation, genetic counseling and anticipation of potential complications during concomitant situations such as acute illness, trauma or major surgery.

  • There is lack of phenotype–genotype correlation in Wolcott–Rallison syndrome.

  • Structural kidney abnormality, in our case MCDK, can be seen in WRS.

Open access