Pheochromocytoma clinical manifestations

Written by Chen Yu Fei
Neurosurgery
Updated on September 19, 2024
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Pheochromocytoma typically presents with severe hypertension, with blood pressure even reaching above 200/140 mmHg, accompanied by significant discomfort, such as profuse sweating, chest pain, obvious difficulty in breathing, chest tightness, shortness of breath, and other clinical manifestations. Moreover, if not treated timely and effectively, it can even lead to a hypertensive crisis. It also poses a severe threat to the patient’s heart, kidneys, liver, and brain tissues. Some patients might develop cerebrovascular diseases due to very high blood pressure, such as hypertensive cerebral hemorrhage, which can threaten the patient's life.

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Written by Chen Yu Fei
Neurosurgery
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Pheochromocytoma clinical manifestations

Pheochromocytoma typically presents with severe hypertension, with blood pressure even reaching above 200/140 mmHg, accompanied by significant discomfort, such as profuse sweating, chest pain, obvious difficulty in breathing, chest tightness, shortness of breath, and other clinical manifestations. Moreover, if not treated timely and effectively, it can even lead to a hypertensive crisis. It also poses a severe threat to the patient’s heart, kidneys, liver, and brain tissues. Some patients might develop cerebrovascular diseases due to very high blood pressure, such as hypertensive cerebral hemorrhage, which can threaten the patient's life.

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Written by Chen Yu Fei
Neurosurgery
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Causes of hypotension in pheochromocytoma

For cases of hypotension occurring in pheochromocytoma, it is most commonly seen after the surgical removal of the tumor. At this point, the concentration of catecholamines in the blood may significantly decrease, leading to a marked reduction in effective circulating blood volume, and thus causing hypotension. This situation is relatively common after surgery for pheochromocytoma. Usually, after surgical treatment and removal of the tumor, it is important to promptly discontinue the use of receptor blockers in patients and to appropriately replenish blood volume to effectively maintain central venous pressure. This approach can generally counteract the reduction in catecholamine levels caused by surgery, which leads to hypotension.

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Written by Chen Yu Fei
Neurosurgery
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The manifestations of pheochromocytoma crisis

For patients with pheochromocytoma, during a crisis, it generally manifests as a sudden increase in the patient's blood pressure, which can rise to above 200-300 mmHg. Additionally, the patient experiences severe headaches and dizziness, severe nausea and vomiting. Some patients may experience significant discomfort and tachycardia, arrhythmias. Some patients also suffer from abdominal or chest pain, labored breathing, and difficulty breathing, and even blurred vision. In severe cases, the excessively high blood pressure can lead to hypertensive cerebral hemorrhage or other unexpected cardiovascular and cerebrovascular diseases. The patient’s vital signs are extremely unstable, often accompanied by multiple organ dysfunction or failure.

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Written by Chen Yu Fei
Neurosurgery
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How is pheochromocytoma treated?

Currently, for the treatment of pheochromocytoma, it is primarily important that once diagnosed with pheochromocytoma, one should promptly visit the local hospital to arrange surgical treatment as soon as possible. By surgically removing the pheochromocytoma, this prevents the excessive secretion of catecholamines, which can lead to a hypertensive crisis in patients. Therefore, clinically, after diagnosing and locating the pheochromocytoma, receiving surgical treatment can often achieve satisfactory therapeutic outcomes. Typically, appropriate preparations must be made before surgery. Generally, prior to the operation, it is crucial to actively administer medications such as alpha-adrenergic blockers, beta-adrenergic blockers, calcium channel blockers, angiotensin-converting enzyme inhibitors, vasodilators, and catecholamine synthesis inhibitors to effectively treat and stabilize blood pressure.

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Written by Chen Yu Fei
Neurosurgery
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How is pheochromocytoma diagnosed?

For the diagnosis of pheochromocytoma, further examinations need to be completed first. These examinations mainly include qualitative tests and localization tests. The qualitative tests are primarily conducted through laboratory tests to measure the levels of catecholamine-related metabolites to further determine the presence of the tumor. Localization tests are performed using abdominal ultrasound, abdominal CT, and, if necessary, high-resolution abdominal CT to pinpoint the location of the tumor. Once the qualitative and localization diagnostics are performed, it can be confirmed whether a pheochromocytoma exists and its specific location. Depending on the situation, surgery can be used to remove the tumor, in conjunction with pharmacological treatment.