Pheochromocytomas and secreting paragangliomas

Area of Science:

• Endocrinology
• Oncology
• Genetics

Background:

• Catecholamine-producing tumors, pheochromocytomas and paragangliomas, originate from chromaffin cells.
• They affect 0.1% of hypertensive patients and 4% of those with adrenal masses.
• Symptoms include headaches, palpitations, sweating, hypertension, weight loss, and diabetes.

Purpose of the Study:

• To review the diagnosis, treatment, and management of catecholamine-producing tumors.
• To highlight the genetic associations and clinical presentation of these tumors.
• To emphasize the importance of long-term follow-up for patients.

Main Methods:

• Diagnostic methods include plasma or urinary metanephrine determination.
• Imaging techniques such as CT, MRI, and MIBG scintigraphy are used for localization.
• Treatment involves surgical resection, often via laparoscopy.

Main Results:

• Familial cases are diagnosed earlier and are more often bilateral and recurrent than sporadic cases.
• Approximately 10% of these tumors are malignant, indicated by metastases.
• Malignancy and recurrence risk are higher in large or extraadrenal tumors.

Conclusions:

• Early and accurate diagnosis using metanephrine levels is crucial.
• Surgical management is the primary treatment, with laparoscopic approaches preferred.
• Indefinite follow-up is recommended, particularly for patients with familial or extraadrenal tumors.