Intestinal pseudoobstruction as a presenting feature of a pheochromocytoma

Phaeochromocytoma presenting with pseudo-intestinal obstruction and lactic acidosis

Phaeochromocytomas are rare neuroendocrine tumours with variable clinical signs and symptoms. Hypertension, tachycardia, sweating and headaches are cardinal manifestations. Although nausea and abdominal pain are the more common gastrointestinal features, rare gastrointestinal spectrums have been reported that can mimic abdominal emergencies. Metabolic effects of hypercatecholaminaemia are vast and one such rare presentation is lactic acidosis. We describe a case of phaeochromocytoma presenting with both intestinal pseudo-obstruction as well as lactic acidosis. This case report highlights the importance of having a high index of suspicion for and early recognition of the gastrointestinal and metabolic manifestations of phaeochromocytomas.

Unique manifestations of catecholamine release in malignant pheochromocytoma: an experience within an inpatient palliative care unit

Malignant pheochromocytoma is a rare disorder. We describe the case of a 41-year-old female with disseminated metastatic pheochromocytoma who was admitted for ongoing palliative and supportive care within an inpatient palliative care unit. Predominant symptoms included severe gastrointestinal pseudo-obstruction and orthostatic hypotension Pseudo-obstruction management included percutaneous enterogastric and percutaneous enterojejunostomy tubes for gastric decompression and delivery of nutrition, respectively. Debilitating symptoms of orthostatic hypotension were mitigated with judicious fluid balance and appropriate use of adrenergic blocking agents. The potential for metoclopramide to worsen symptoms also was a significant component of management. The case presents rare features of this unusual disease and is unique for its setting within the confines of a palliative care unit.