Pheochromocytoma with Ventricular Tachycardia as the Presenting Symptom

An Interesting Case of Treatment-Resistant Ventricular Tachycardia Secondary to Pheochromocytoma and Left Ventricular Non-compaction

A 51-year-old patient was admitted with chest pain and broad complex ventricular tachycardia. He received three consecutive direct cardioversion (DC) shocks and was commenced on amiodarone infusion via a central venous catheter or central line (CVC). He responded to treatment and normal sinus rhythm (NSR) was achieved. He had elevated troponin I and underwent coronary angiogram which initially was thought to be responsible for his ventricular tachycardia. Coronary angiogram (CAG) showed unobstructed coronary arteries. He was recently diagnosed with pheochromocytoma and was commenced on Phenoxybenzamine 10 mg two months back. He developed ventricular tachycardia (VT) again the next day that did not respond to four consecutive direct cardioversion shocks (DC) and antiarrhythmic medications. He was intubated and ventilated to terminate his VT and was transferred to the intensive care unit (ICU). He remained intubated for 48 hours and he remained in NSR, after which he was extubated. He was commenced on bisoprolol and was later stepped down to the coronary care unit (CCU). Cardiac magnetic resonance imaging (CMR) showed left ventricular non-compaction (LVNC) or possibly myocarditis in view of patient's known history of pheochromocytoma. He was discussed with surgical team at another hospital for surgical resection of the adrenal tumor and had a few further runs of VT while he was waiting to be transferred. The patient finally underwent surgical resection of the tumor and was booked for implantable cardioverter defibrillator (ICD) in view of his VT. This was an interesting case of treatment-resistant VT driven by pheochromocytoma and LVNC, and it is important to be familiar with the fact that conventional therapies may fail in these patients and may require intubation and ventilation to terminate VT storms.

Hypertensive crisis precatheter ablation for resistant atrial fibrillation: a case of undiagnosed bilateral pheochromocytomas

A 63-year-old man with hypertension was referred for catheter ablation of persistent atrial fibrillation. He was diagnosed with paroxysmal atrial fibrillation approximately 6 years prior. Over the previous 12 months, his atrial fibrillation had become persistent despite medication optimisation for rate control and elective cardioversion. Sinus rhythm was restored briefly. The decision was made to pursue catheter ablation and isolation of the pulmonary veins. On anaesthetic induction, the patient suffered from a hypertensive crisis. The procedure was aborted, and the patient was admitted to hospital for investigations of secondary hypertension. Ultimately, the patient was diagnosed with bilateral pheochromocytomas. This case outlines the diagnostic challenges and cardiac comorbidities associated with bilateral pheochromocytomas.

Pheochromocytoma in a 49-year-old woman presenting with acute myocardial infarction: A case report

BACKGROUND

Pheochromocytoma is a rare endocrine tumor arising from chromaffin cells and having extensive and profound effects on the cardiovascular system by continuously or intermittently releasing catecholamines. The clinical manifestations of pheochromocytoma are diverse, and the typical triad, including episodic headache, palpitations, and sweating, only occurs in 24% of pheochromocytoma patients, which often misleads clinicians into making an incorrect diagnosis. We herein report the case of a patient with intermittent chest pain and elevated myocardial enzymes for 2 years who was diagnosed with pheochromocytoma.

CASE SUMMARY

A 49-year-old woman presented with intermittent chest pain for 2 years. Two years ago, the patient experienced chest pain and was diagnosed with acute myocardial infarction, with 25% stenosis in the left circumflex. The patient still had intermittent chest pain after discharge. Two hours before admission to our hospital, the patient experienced chest pain with nausea and vomiting, lasting for 20 min. Troponin I and urinary norepinephrine and catecholamine levels were elevated. An electrocardiogram indicated QT prolongation and ST-segment depression in leads II, III, aVF, and V3-V6. A coronary computed tomography angiogram revealed no evidence of coronary artery disease. Echocardiography showed left ventricular enlargement and a decreased posterior inferior wall motion amplitude. Contrast-enhanced computed tomography demonstrated an inhomogeneous right adrenal mass. The patient successfully underwent laparoscopic right adrenalectomy, and histopathology confirmed adrenal pheochromocytoma. During the first-year follow-up visits, the patient was asymptomatic. The abnormal changes on echocardiography and electrocardiogram disappeared.

CONCLUSION

Clinicians should be aware of pheochromocytoma. A timely and accurate diagnosis of pheochromocytoma is essential for alleviating serious cardiac complications.

Electrical Storm in a Case of Bilateral Pheochromocytomas

Patient: Male, 63-year-old

Final Diagnosis: Electrical storm

Symptoms: Hypotension • syncope

Medication: —

Clinical Procedure: —

Specialty: Cardiology

Pheochromocytoma in a patient presenting with ventricular fibrillation and carotid dissection: a case report

BACKGROUND

Pheochromocytoma is an endocrine tumour secreting catecholamines, most often revealed by clinical symptoms (headache, palpitations, diaphoresis, or resistant hypertension). Some cases of ventricular arrhythmias were described in the literature, without any formal link between arrhythmia and pheochromocytoma.

CASE SUMMARY

We report a case of pheochromocytoma discovered after cardiac arrest due to ventricular fibrillation in a 46-year-old patient. The diagnosis was suggested by clinical symptoms (headache, palpitation, and diaphoresis) and suspected on the abdominal computed tomography scan. The diagnosis was corroborated by metaiodobenzylguanidine scintigraphy and finally confirmed by anatomopathological analysis of the operative specimen. The cerebral imaging showed a dissection of the left internal carotid artery and an intraparenchymal haematoma that might be secondary to a catecholaminergic discharge of phaeochromocytoma and severe hypertension.

DISCUSSION

Since pheochromocytoma is accessible to curative treatment, its detection in case of cardiac arrest is essential to decrease the risk of arrhythmic recurrence.

3T MRI evaluation of regional catecholamine-producing tumor-induced myocardial injury

OBJECTIVE

Regional differences in cardiac magnetic resonance, which can reveal catecholamine-induced myocardial injury in patients with pheochromocytoma, have not yet been assessed using 3T magnetic resonance imaging. We evaluated these differences using myocardial T1-mapping and strain analysis.

DESIGN AND METHODS

We retrospectively reviewed 16 patients newly diagnosed with catecholamine-producing tumors (CPT group) and 16 patients with essential hypertension (EH group), who underwent cardiac magnetic resonance imaging between May 2016 and March 2018. We acquired 3T magnetic resonance cine and native T1-mapping images and performed feature-tracking-based strain analysis in the former.

RESULTS

Global cardiac function, morphology, global strain and peak strain rate were similar, but end-diastolic wall thickness differed between groups (CPT vs EH: 10.5 ± 1.7 vs 12.6 ± 2.8 mm; P < 0.05). Basal, but not apical, circumferential strain was significantly higher in the CPT than the EH group (19.4 ± 3.2 vs 16.8 ± 3.6 %; P < 0.05). Native T1 values were significantly higher in CPT than in EH patients, in both the basal septum (1307 ± 48 vs 1241 ± 45 ms; P < 0.01) and the apical septum (1377 ± 59 vs 1265 ± 58 ms; P < 0.01) mid-walls. In the CPT, but not in the EH group, native T1 values in the apical wall were significantly higher than those in the basal wall (P < 0.01).

CONCLUSION

3T magnetic resonance-based T1-mapping can sensitively detect subclinical catecholamine-induced myocardial injury; the influence of catecholamines may be greater in the apical than in the basal wall.

Severe hemodynamic instability during elective surgery for a patient with a giant pheochromocytoma: A case report

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A huge pheochromocytoma measuring 16 cm × 15 cm × 10 cm is rare.

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Despite adequate preoperative and intraoperative management, the patient developed severe hypertension followed by a hypotension crisis which were almost lethal.

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Through multidisciplinary management with appropriate resuscitative measures, the huge tumor was resected en bloc with a R0 resection.

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The patient recovered well postoperatively and was free of hypertension.

Introduction

We present a patient with a huge pheochromocytoma who ran a stormy intraoperative course.

Presentation of case

A 57-year-old woman underwent elective open surgery for a giant pheochromocytoma (16 × 15 × 10 cm) after adequate preoperative medical preparation. The patient developed severe hypertension on tumor mobilization followed bylife-threatening hypotensionwhen the tumor was removed. The hemodynamic instability was successfully managed. Histology showed a pheochromocytomawith tumor-free resection margins. The patient fully recoveredandthe hypertension completely resolved after the operation.

Discussion

This is a rare and educational case report on a patient with a huge pheochromocytoma who was successfully managed by a multidisciplinary team of specialists.

Conclusion

Pheochromocytoma should be resected if technically possible. A multidisciplinary team approach is required for proper management.