A Case of Pheochromocytoma Presenting as Low Back Pain

Transient cardiogenic shock during a crisis of pheochromocytoma triggered by high-dose exogenous corticosteroids

We report a case of a 39-year-old woman who presented to the emergency department (ED) with symptoms of pharyngitis and fever. Diagnosed with streptococcal pharyngitis, she received antibiotics and dexamethasone, and was discharged. Within 24 h she returned to the ED with signs and symptoms of an acute coronary syndrome; she was thus given β-blockers. Her coronary angiogram was normal. She developed cardiogenic shock with an ejection fraction (EF) of 10% and apical ballooning on echocardiography. Her condition improved with optimal medical therapy. Subsequent testing weeks later confirmed the presence of a pheochromocytoma. Following prazosin and an adrenalectomy, all her antihypertensive medications were weaned and her EF normalised. We believe the high-dose exogenous corticosteroids triggered a pheochromocytoma crisis. The concomitant use of β-blockers without preceding α blockade resulted in cardiovascular collapse. Pheochromocytoma crisis must be included in the differential diagnosis of any dramatic haemodynamic collapse after administration of exogenous corticosteroid or β-blockers.

Pheochromocytoma: a cause of ST-segment elevation myocardial infarction, transient left ventricular dysfunction, and takotsubo cardiomyopathy

OBJECTIVE

To report the case of a patient with a pheochromocytoma and apical left ventricular dysfunction that resolved after surgical resection of the pheochromocytoma, to review the effects of catecholamines on myocyte function and the concept that takotsubo cardiomyopathy (TC) is caused by excess catecholamines, and to illustrate the difficulty in the management of an acute coronary syndrome (ACS) during a hypertensive crisis attributable to a pheochromocytoma.

METHODS

We present the clinical history, physical findings, laboratory results, and imaging studies in a 60-year-old man with an ACS, TC, and an incidentaloma later diagnosed to be a pheochromocytoma. The association with TC and the pertinent literature are reviewed.

RESULTS

A 60-year-old man was suspected of having myocardial ischemia on the basis of symptoms of paroxysmal chest pain extending to the left shoulder, diaphoresis, ST-segment elevation on an electrocardiogram, and elevated serial levels of cardiac enzymes. Coronary angiography did not reveal substantial coronary artery obstruction but detected ballooning of the apical, anterior, and inferior cardiac walls, consistent with TC. He had a history of labile hypertension and palpitations of 3 months' duration. An adrenal mass detected on a prior computed tomographic scan and increased 24-hour urine catecholamine levels were consistent with a pheochromocytoma. Treatment with phenoxybenzamine was initiated, and he underwent a right adrenalectomy, which confirmed that the tumor was a pheochromocytoma and dramatically improved the patient's condition.

CONCLUSION

Pheochromocytomas manifest with labile blood pressures and should be considered in the differential diagnosis of ACS. This case also supports the concept that TC is caused by excess catecholamines.

An unusual case of back pain: A large Pheochromocytoma in an 85 year old woman

INTRODUCTION

Low back ache is a common complaint in the elderly and in the absence of red flag symptoms can be easily dismissed as benign. Pheochromocytoma presenting as back pain is unusual and to our knowledge, only two previous cases have been reported in the literature with back pain as the 'only' presenting symptom.

CASE PRESENTATION

We illustrate the case of an 85 year-old woman who presented with a 6 month history of back pain due to a very large Pheochromocytoma. This was incidentally picked up during a routine Lumbar spine plain radiograph and was noted to be a large Pheochromocytoma occupying the whole of the left abdomen. She required an open adrenalectomy to remove the large left adrenal tumour weighing 2.3 kg.

CONCLUSION

Pheochromocytoma can present as a mimic of musculoskeletal conditions and hence due care should be exercised in assessing such presentations both in the young and elderly patients. Our patient is different from the other reported cases, as she is an 85 year-old and 'back pain' can be easily dismissed without investigating in such age groups, thereby missing serious conditions.

The chiropractic care of patients with cancer: a systematic review of the literature

BACKGROUND AND SIGNIFICANCE

Cancer is the leading cause of death worldwide and accounted for 7.4 million deaths in 2004. By 2030, deaths from cancer have been estimated at 12 million with 30% being preventable. Complementary and alternative medicine remains popular among cancer patients; particularly with chiropractic services. However, the nature of the chiropractic clinical encounter and its reported benefits remains to be fully investigated. Towards these efforts, we begin with a systematic review of the literature on the chiropractic care of patients with cancer.

METHODS

The following electronic databases were searched: MANTIS [1965-2010]; Index to Chiropractic Literature [1984-2010]; Pubmed [1966-2010]; Medline [1965-2010] EMBASE [1974-2010], AMED [1975-2010], CINAHL Plus [1965-2010], Alt-Health Watch [1965-2010] and PsychINFO [1965-2010]. Key words used were "cancer" and "neoplasm" in Boolean combination with "chiropractic." Primary investigation/reports in peer-reviewed English journals involving chiropractic care were reviewed.

RESULTS

Our review revealed 60 case reports, 2 case series, 21 commentaries, 2 survey studies, and 2 literature reviews. The case reports were diagnostic with commentaries highlighting the importance of recognizing the patient presenting with NMS complaints due to an underlying neoplasm. The chiropractic clinical encounter prior to cancer diagnosis and subsequent medical referral is poorly characterized in the literature.

CONCLUSION

Patients with cancer seek the care of chiropractors. The literature does not reflect or describe the totality of the chiropractic clinical encounter. We encourage further research in this field.

Do people with an ileostomy have a different back pain experience to those with a colostomy? A postal survey in Northern Ireland

BACKGROUND

The abdominal muscles play a vital role in lumbar stability. The stoma surgery creates a permanent flaw in the abdominal wall and this may increase the risk of low back pain for people with a stoma.

PURPOSE

To determine whether there was a difference in back pain experience between the two stoma groups: ileostomy and colostomy.

METHOD

A postal questionnaire sent to people in Northern Ireland with an ileostomy or colostomy.

RESULT

Over half (56.7%, n = 417) had back pain in the last 6 months and the primary perceived cause was the stoma surgery. There was a statistically significant deterioration in functional activities in those with back pain when 'today' was compared with 'before surgery'. Those with a colostomy had generally poorer outcomes in respect of pain and disability, than those with an ileostomy.

CONCLUSION

Low back pain in people with a stoma is a real and complex issue, especially as there are significant differences between those with an ileostomy when compared with people with a colostomy. Many factors are likely to contribute to a person developing low back pain, not least, the underlying reason for the surgery and the surgical procedure itself.