Diagnosis and Treatment > Investigation > Blood pressure

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Yael R Nobel Department of Medicine, Columbia University Medical Center, New York, New York, 10032, USA

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Maya B Lodish Section on Endocrinology and Genetics, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, BG 10-CRC, Room 1-3216, 10 Center Drive, Bethesda, Maryland, 20814, USA

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Margarita Raygada Section on Endocrinology and Genetics, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, BG 10-CRC, Room 1-3216, 10 Center Drive, Bethesda, Maryland, 20814, USA

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Jaydira Del Rivero Medical Oncology Branch, National Cancer Institute, National Institutes of Health, 10 Center Drive, Building 10, Room 12N-226, Bethesda, Maryland, 20892, USA

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Fabio R Faucz Section on Endocrinology and Genetics, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, BG 10-CRC, Room 1-3216, 10 Center Drive, Bethesda, Maryland, 20814, USA

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Smita B Abraham Section on Endocrinology and Genetics, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, BG 10-CRC, Room 1-3216, 10 Center Drive, Bethesda, Maryland, 20814, USA

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Charalampos Lyssikatos Section on Endocrinology and Genetics, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, BG 10-CRC, Room 1-3216, 10 Center Drive, Bethesda, Maryland, 20814, USA

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Elena Belyavskaya Section on Endocrinology and Genetics, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, BG 10-CRC, Room 1-3216, 10 Center Drive, Bethesda, Maryland, 20814, USA

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Constantine A Stratakis Section on Endocrinology and Genetics, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, BG 10-CRC, Room 1-3216, 10 Center Drive, Bethesda, Maryland, 20814, USA

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Mihail Zilbermint Section on Endocrinology and Genetics, Program on Developmental Endocrinology and Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, BG 10-CRC, Room 1-3216, 10 Center Drive, Bethesda, Maryland, 20814, USA
Johns Hopkins University School of Medicine, Division of Endocrinology, Diabetes, and Metabolism, Baltimore, Maryland, 21287, USA
Suburban Hospital, Bethesda, Maryland, 20814, USA

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Summary

Autosomal recessive pseudohypoaldosteronism type 1 (PHA1) is a rare disorder characterized by sodium wasting, failure to thrive, hyperkalemia, hypovolemia and metabolic acidosis. It is due to mutations in the amiloride-sensitive epithelial sodium channel (ENaC) and is characterized by diminished response to aldosterone. Patients may present with life-threatening hyperkalemia, which must be recognized and appropriately treated. A 32-year-old female was referred to the National Institutes of Health (NIH) for evaluation of hyperkalemia and muscle pain. Her condition started in the second week of life, when she was brought to an outside hospital lethargic and unresponsive. At that time, she was hypovolemic, hyperkalemic and acidotic, and was eventually treated with sodium bicarbonate and potassium chelation. At the time of the presentation to the NIH, her laboratory evaluation revealed serum potassium 5.1 mmol/l (reference range: 3.4–5.1 mmol/l), aldosterone 2800 ng/dl (reference range: ≤21 ng/dl) and plasma renin activity 90 ng/ml/h (reference range: 0.6–4.3 ng/ml per h). Diagnosis of PHA1 was suspected. Sequencing of the SCNN1B gene, which codes for ENaC, revealed that the patient is a compound heterozygote for two novel variants (c.1288delC and c.1466+1 G>A), confirming the suspected diagnosis of PHA1. In conclusion, we report a patient with novel variants of the SCNN1B gene causing PHA1 with persistent, symptomatic hyperkalemia.

Learning points

  • PHA1 is a rare genetic condition, causing functional abnormalities of the amiloride-sensitive ENaC.

  • PHA1 was caused by previously unreported SCNN1B gene mutations (c.1288delC and c.1466+1 G>A).

  • Early recognition of this condition and adherence to symptomatic therapy is important, as the electrolyte abnormalities found may lead to severe dehydration, cardiac arrhythmias and even death.

  • High doses of sodium polystyrene sulfonate, sodium chloride and sodium bicarbonate are required for symptomatic treatment.

Open access
Rémi Goupil Endocrine Hypertension Research Centre, University of Queensland School of Medicine, Greenslopes and Princess Alexandra Hospitals, Ipswich Road, Woolloongabba, Brisbane, Queensland, 4102, Australia
Hôpital du Sacré-Coeur de Montréal, University of Montreal, Montreal, Quebec, H4J 1C5, Canada

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Martin Wolley Endocrine Hypertension Research Centre, University of Queensland School of Medicine, Greenslopes and Princess Alexandra Hospitals, Ipswich Road, Woolloongabba, Brisbane, Queensland, 4102, Australia

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Jacobus Ungerer Department of Chemical Pathology, Pathology Queensland, Brisbane, Queensland, 4001, Australia

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Brett McWhinney Department of Chemical Pathology, Pathology Queensland, Brisbane, Queensland, 4001, Australia

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Kuniaki Mukai Department of Biochemistry, Medical Education Center, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan

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Mitsuhide Naruse Department of Endocrinology, Metabolism and Hypertension, National Hospital Organization Kyoto Medical Center, Kyoto, Japan

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Richard D Gordon Endocrine Hypertension Research Centre, University of Queensland School of Medicine, Greenslopes and Princess Alexandra Hospitals, Ipswich Road, Woolloongabba, Brisbane, Queensland, 4102, Australia

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Michael Stowasser Endocrine Hypertension Research Centre, University of Queensland School of Medicine, Greenslopes and Princess Alexandra Hospitals, Ipswich Road, Woolloongabba, Brisbane, Queensland, 4102, Australia

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Summary

In patients with primary aldosteronism (PA) undergoing adrenal venous sampling (AVS), cortisol levels are measured to assess lateralization of aldosterone overproduction. Concomitant adrenal autonomous cortisol and aldosterone secretion therefore have the potential to confound AVS results. We describe a case where metanephrine was measured during AVS to successfully circumvent this problem. A 55-year-old hypertensive male had raised plasma aldosterone/renin ratios and PA confirmed by fludrocortisone suppression testing. Failure of plasma cortisol to suppress overnight following dexamethasone and persistently suppressed corticotrophin were consistent with adrenal hypercortisolism. On AVS, comparison of adrenal and peripheral A/F ratios (left 5.7 vs peripheral 1.0; right 1.7 vs peripheral 1.1) suggested bilateral aldosterone production, with the left gland dominant but without contralateral suppression. However, using aldosterone/metanephrine ratios (left 9.7 vs peripheral 2.4; right 1.3 vs peripheral 2.5), aldosterone production lateralized to the left with good contralateral suppression. The patient underwent left laparoscopic adrenalectomy with peri-operative glucocorticoid supplementation to prevent adrenal insufficiency. Pathological examination revealed adrenal cortical adenomas producing both cortisol and aldosterone within a background of aldosterone-producing cell clusters. Hypertension improved and cured of PA and hypercortisolism were confirmed by negative post-operative fludrocortisone suppression and overnight 1 mg dexamethasone suppression testing. Routine dexamethasone suppression testing in patients with PA permits detection of concurrent hypercortisolism which can confound AVS results and cause unilateral PA to be misdiagnosed as bilateral with patients thereby denied potentially curative surgical treatment. In such patients, measurement of plasma metanephrine during AVS may overcome this issue.

Learning points

  • Simultaneous autonomous overproduction of cortisol and aldosterone is increasingly recognised although still apparently uncommon.

  • Because cortisol levels are used during AVS to correct for differences in dilution of adrenal with non-adrenal venous blood when assessing for lateralisation, unilateral cortisol overproduction with contralateral suppression could confound the interpretation of AVS results

  • Measuring plasma metanephrine during AVS to calculate lateralisation ratios may circumvent this problem.

Open access
Maura Bucciarelli Department of Medicine, Lehigh Valley Health Network, Allentown, Pennsylvania, 18103, USA

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Ya-Yu Lee Division of Endocrinology, Department of Medicine, Lehigh Valley Health Network, Allentown, Pennsylvania, 18103, USA

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Vasudev Magaji Division of Endocrinology, Department of Medicine, Lehigh Valley Health Network, Allentown, Pennsylvania, 18103, USA

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Summary

Ectopic ACTH secretion from breast cancer is extremely rare. We report a case of a 30-year-old woman with a history of breast cancer, who presented with psychosis and paranoid behaviour. CT of the head showed white matter disease consistent with posterior reversible encephalopathy syndrome (PRES). Despite using mifepristone with multiple antihypertensives including lisinopril, spironolactone and metoprolol, she was hypertensive. Transaminitis did not allow mifepristone dose escalation and ketoconazole utilization. Etomidate infusion at a non-sedating dose in the intensive care unit controlled her hypertension and cortisol levels. She was transitioned to metyrapone and spironolactone. She was discharged from the hospital on metyrapone with spironolactone and underwent chemotherapy. She died 9 months later after she rapidly redeveloped Cushing's syndrome and had progressive metastatic breast cancer involving multiple bones, liver and lungs causing respiratory failure.

Learning points

  • Cushing's syndrome from ectopic ACTH secreting breast cancer is extremely rare.

  • Cushing's syndrome causing psychosis could be multifactorial including hypercortisolism and PRES.

  • Etomidate at non-sedating doses in intensive care setting can be effective to reduce cortisol production followed by transition to oral metyrapone.

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V Larouche Resident, Internal Medicine Residency Training Program, Department of Medicine, McGill University, Montreal, Quebec, Canada

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L Snell Division of General Internal Medicine, McGill University Health Centre, Montreal, Quebec, H4A 3J1, Canada

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D V Morris Division of Endocrinology, McGill University Health Centre, Montreal, Quebec, H4A 3J1, Canada

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Summary

Myxoedema madness was first described as a consequence of severe hypothyroidism in 1949. Most cases were secondary to long-standing untreated primary hypothyroidism. We present the first reported case of iatrogenic myxoedema madness following radioactive iodine ablation for Graves' disease, with a second concurrent diagnosis of primary hyperaldosteronism. A 29-year-old woman presented with severe hypothyroidism, a 1-week history of psychotic behaviour and paranoid delusions 3 months after treatment with radioactive iodine ablation for Graves' disease. Her psychiatric symptoms abated with levothyroxine replacement. She was concurrently found to be hypertensive and hypokalemic. Primary hyperaldosteronism from bilateral adrenal hyperplasia was diagnosed. This case report serves as a reminder that myxoedema madness can be a complication of acute hypothyroidism following radioactive iodine ablation of Graves' disease and that primary hyperaldosteronism may be associated with autoimmune hyperthyroidism.

Learning points

  • Psychosis (myxoedema madness) can present as a neuropsychiatric manifestation of acute hypothyroidism following radioactive iodine ablation of Graves' disease.

  • Primary hyperaldosteronism may be caused by idiopathic bilateral adrenal hyperplasia even in the presence of an adrenal adenoma seen on imaging.

  • Adrenal vein sampling is a useful tool for differentiating between a unilateral aldosterone-producing adenoma, which is managed surgically, and an idiopathic bilateral adrenal hyperplasia, which is managed medically.

  • The management of autoimmune hyperthyroidism, iatrogenic hypothyroidism and primary hyperaldosteronism from bilateral idiopathic adrenal hyperplasia in patients planning pregnancy includes delaying pregnancy 6 months following radioactive iodine treatment and until patient is euthyroid for 3 months, using amiloride as opposed to spironolactone, controlling blood pressure with agents safe in pregnancy such as nifedipine and avoiding β blockers.

  • Autoimmune hyperthyroidism and primary hyperaldosteronism rarely coexist; any underlying mechanism associating the two is still unclear.

Open access
Gautam Das Department of Diabetes and Endocrinology, Prince Charles Hospital, Cwm Taf University Health Board, Merthyr Tydfil, Mid Glamorgan, CF47 9DT, UK

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Peter N Taylor Department of Diabetes and Endocrinology, Prince Charles Hospital, Cwm Taf University Health Board, Merthyr Tydfil, Mid Glamorgan, CF47 9DT, UK

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Arshiya Tabasum Department of Diabetes and Endocrinology, Prince Charles Hospital, Cwm Taf University Health Board, Merthyr Tydfil, Mid Glamorgan, CF47 9DT, UK

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L N Rao Bondugulapati Department of Diabetes and Endocrinology, Maelor Hospital, Betsi Cadwaldr University Health Board, Wrexham, LL13 7TD, UK

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Danny Parker Department of Histopathology, University Hospital of Wales, Cardiff and Vale University Health Board, Cardiff, CF14 4XW, UK

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Piero Baglioni Department of Diabetes and Endocrinology, Prince Charles Hospital, Cwm Taf University Health Board, Merthyr Tydfil, Mid Glamorgan, CF47 9DT, UK

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Onyebuchi E Okosieme Department of Diabetes and Endocrinology, Prince Charles Hospital, Cwm Taf University Health Board, Merthyr Tydfil, Mid Glamorgan, CF47 9DT, UK

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David Scott Coombes Department of Endocrine Surgery, University Hospital of Wales, Cardiff and Vale University Health Board, Cardiff, CF14 4XW, UK

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Summary

Resistant hypertension is often difficult to treat and may be associated with underlying primary aldosteronism (PA). We describe the case of an elderly gentleman who presented with severe and resistant hypertension and was found to have a left adrenal incidentaloma during evaluation but had aldosterone excess secondary to unilateral adrenal hyperplasia (UAH) of the contralateral gland, which needed surgical intervention. A 65-year-old gentleman was evaluated for uncontrolled high blood pressure (BP) in spite of taking four antihypertensive medications. The high BP was confirmed on a 24-h ambulatory reading, and further biochemical evaluation showed an elevated serum aldosterone renin ratio (ARR) (1577 pmol/l per ng per ml per h). Radiological evaluation showed an adrenal nodule (15 mm) in the left adrenal gland but an adrenal vein sampling demonstrated a lateralization towards the opposite site favouring the right adrenal to be the source of excess aldosterone. A laparoscopic right adrenalectomy was performed and the histology of the gland confirmed nodular hyperplasia. Following surgery, the patient's BP improved remarkably although he remained on antihypertensives and under regular endocrine follow-up. PA remains the most common form of secondary and difficult-to-treat hypertension. Investigations may reveal incidental adrenal lesions, which may not be the actual source of excess aldosterone, but UAH may be a contributor and may coexist and amenable to surgical treatment. An adrenal vein sampling should be undertaken for correct lateralization of the source, otherwise a correctable diagnosis may be missed and the incorrect adrenal gland may be removed.

Learning points

  • Severe and resistant hypertension can often be associated with underlying PA.

  • ARR is an excellent screening tool in patients with suspected PA.

  • Lateralization with adrenal venous sampling is essential to isolate the source and differentiate between unilateral and bilateral causes of hyperaldosteronism.

  • Adrenal incidentalomas and UAH may coexist and the latter may often be the sole cause of excess aldosterone secretion.

  • Decisions about adrenalectomy should be made only after integrating and interpreting radiological and biochemical test findings properly.

Open access
C P Neves Section of Endocrinology, Department of Internal Medicine, Erasmus MC, 's Gravendijkwal 230NL-3015, CE Rotterdam, The Netherlands

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E T Massolt Section of Endocrinology, Department of Internal Medicine, Erasmus MC, 's Gravendijkwal 230NL-3015, CE Rotterdam, The Netherlands

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R P Peeters Section of Endocrinology, Department of Internal Medicine, Erasmus MC, 's Gravendijkwal 230NL-3015, CE Rotterdam, The Netherlands

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S J Neggers Section of Endocrinology, Department of Internal Medicine, Erasmus MC, 's Gravendijkwal 230NL-3015, CE Rotterdam, The Netherlands

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W W de Herder
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Summary

A 21-year-old woman presented with amenorrhea, bilateral galactorrhea and fatigue. Visual acuity and visual fields were normal. Laboratory examination demonstrated hyperprolactinemia. Magnetic resonance imaging (MRI) of the pituitary showed a 19×17×12-mm sellar mass with supra- and parasellar extension, causing compression of the pituitary stalk and optic chiasm. Further examinations confirmed mild hyperprolactinemia, strongly elevated TSH (>500 mU/l), low free thyroxine (FT4), hypogonadotropic hypogonadism and secondary adrenal insufficiency. Hydrocortisone and l-T4 replacement therapy was started. Three months later, the galactorrhea had disappeared, thyroid function was normalized and MRI revealed regression of the pituitary enlargement, confirming the diagnosis of pituitary hyperplasia (PH) due to primary hypothyroidism. Subsequently, the menstrual cycle returned and the hypocortisolism normalized. This case demonstrates that severe primary hypothyroidism may have an unusual presentation and should be considered in the differential diagnosis of pituitary enlargement associated with moderate hyperprolactinemia.

Learning points

  • One should always try to find one etiology as the common cause of all the clinical findings in a pathologic process.

  • Amenorrhea, galactorrhea and fatigue may be the only presenting clinical manifestations of primary hypothyroidism.

  • Not every patient with galactorrhea, hyperprolactinemia and a pituitary mass has a prolactinoma.

  • Primary hypothyroidism should always be considered in the differential diagnosis of hyperprolactinemia associated with pituitary enlargement and pituitary hormone(s) deficiency(ies).

  • When PH due to primary hypothyroidism is suspected, thyroid hormone replacement should be started and only regression of pituitary enlargement on MRI follow-up can confirm the diagnosis.

  • Examination of thyroid function in patients with a pituitary mass may avoid unnecessary surgery.

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Omayma Elshafie Department of Medicine, Sultan Qaboos University Hospital, Muscat, Sultanate of Oman

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Yahya Al Badaai Department of Surgery, Sultan Qaboos University Hospital, Muscat, Sultanate of Oman

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Khalifa Alwahaibi Department of Surgery, Sultan Qaboos University Hospital, Muscat, Sultanate of Oman

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Asim Qureshi Department of Pathology, Sultan Qaboos University Hospital, Muscat, Sultanate of Oman

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Samir Hussein Department of Radiology, Sultan Qaboos University Hospital, Muscat, Sultanate of Oman

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Faisal Al Azzri Department of Radiology, Sultan Qaboos University Hospital, Muscat, Sultanate of Oman

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Ali Almamari Department of Medicine, Sultan Qaboos University Hospital, Muscat, Sultanate of Oman

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Nicholas Woodhouse Department of Medicine, Sultan Qaboos University Hospital, Muscat, Sultanate of Oman

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Summary

A 48-year-old hypertensive and diabetic patient presented with a 10-year history of progressive right facial pain, tinnitus, hearing loss, sweating, and palpitations. Investigations revealed a 5.6 cm vascular tumor at the carotid bifurcation. Her blood pressure (BP) was 170/110, on lisinopril 20 mg od and amlodipine 10 mg od and 100 U of insulin daily. A catecholamine-secreting carotid body paraganglioma (CSCBP) was suspected; the diagnosis was confirmed biochemically by determining plasma norepinephrine (NE) level, 89 000 pmol/l, and chromogranin A (CgA) level, 279 μg/l. Meta-iodobenzylguanidine and octreotide scanning confirmed a single tumor in the neck. A week after giving the patient a trial of octreotide 100 μg 8 h, the NE level dropped progressively from 50 000 to 25 000 pmol/l and CgA from 279 to 25 μg/l. Treatment was therefore continued with labetalol 200 mg twice daily (bid) and long-acting octreotide-LA initially using 40 mg/month and later increasing to 80 mg/month. On this dose and with a reduced labetalol intake of 100 mg bid, BP was maintained at 130/70 and her symptoms resolved completely. CgA levels returned to normal in the first week and these were maintained throughout the 3 month treatment period. During tumor resection, there were minimal BP fluctuations during the 10 h procedure. We conclude that short-term high-dose octreotide-LA might prove valuable in the preoperative management of catecholamine-secreting tumors. To the best of our knowledge, this is the first report on the successful use of octreotide in a CSCBP.

Learning points

  • The value of octreotide scanning in the localization of extra-adrenal pheochromocytoma.

  • Control of catecholamine secretion using high-dose octreotide.

  • This is a report of a rare cause of secondary diabetes and hypertension.

Open access
Maria Pikilidou Hypertension Excellence Center, First Department of Internal Medicine
Second Department of Internal Medicine, Papanikolaou General Hospital, Thessaloniki, Greece

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Maria Yavropoulou Division of Endocrinology and Metabolism, AHEPA University Hospital, Thessaloniki, Greece

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Marios Katsounaros Second Department of Internal Medicine, Papanikolaou General Hospital, Thessaloniki, Greece

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Summary

We report a case of a female with hemihypertrophy, who developed five recurrences of pheochromocytomas until the age of 35. Timely follow-up of the patient's blood pressure assisted in early diagnosis and treatment of recurrent tumors.

Learning points

  • Recurrent benign pheochromocytomas should raise suspicion of a genetic syndrome.

  • A pheochromocytoma at a young age has a high propensity to recur and strict follow-up is mandatory.

Open access