ArticleEndocrinology, diabetes & metabolism case reports2021
Rare presentation of collapse and cardiomyopathy in phaeochromocytoma.
Article in Endocrinology, diabetes & metabolism case reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
summaryA phaeochromocytoma is a rare neuroendocrine tumour derived from the chromaffin cells of the adrenal medulla. Tumours can produce excessive amounts of catecholamines. The presenting symptoms can vary but often include the classic triad of episodic headaches, sweating and palpitations. Due to catecholamine excess, patients can develop cardiomyopathy. Bradycardia and collapse could be the result of sinus node dysfunction or transient dysregulation of the autonomic nervous system. Patients with co-existing diabetes can have improvement or resolution of their diabetes after successful adrenalectomy. We report a case of an 87-year-old lady who initially presented with sweating, palpitations and collapse, resulting in a permanent pacemaker insertion. She was later found to have a large adrenal incidentaloma with subsequent markedly elevated plasma metanephrine levels. She later presented with chest pain and in acute pulmonary oedema with normal coronary arteries visualised on coronary angiogram. After surgical excision of her phaeochromocytoma, her diabetes resolved with her HbA1c improving from 68 to 46 mmol/mol, with no further requirement for diabetic medications. Her pulmonary oedema improved with no ongoing need for diuretic therapy. This case highlights that phaeochromocytomas can affect multiple systems and there should be a very high index of suspicion in patients presenting with sweating, palpitations, hypertension and a history of diabetes and even in those with collapse. LEARNING POINTS: There should be a high index of suspicion for phaeochromocytomas in patients with palpitations, diaphoresis, anxiety, hypertension and diabetes. Rarely phaeochromocytomas can present as bradycardia and collapse due to sinus node dysfunction or transient autonomic dysregulation and that should be considered in older patients. Catecholamine cardiomyopathy can occur in phaeochromocytoma with potential resolution after successful surgical excision. Diabetes can resolve after successful surgical treatment of a phaeochromocytoma.
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