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Surgery in patients with unsuspected pheochromocytomas
1Durham VA Medical Center, North Carolina.
Journal of Surgical Oncology
|May 1, 1989
Summary
Unsuspected pheochromocytomas can present without dramatic blood pressure changes during surgery. Careful evaluation of abdominal masses is crucial for diagnosing these tumors, even with seemingly stable patients.
Area of Science:
- Endocrinology
- Surgical Oncology
- Pathology
Background:
- Pheochromocytomas are rare tumors arising from chromaffin cells, often associated with significant hemodynamic instability.
- Surgical management requires careful preoperative preparation to mitigate risks.
Observation:
- Four out of 37 patients (10.8%) operated on for pheochromocytoma had unsuspected tumors.
- Tumor histology showed dense-core neurosecretory granules; three had high norepinephrine concentrations.
- One patient had a malignant pheochromocytoma confirmed by clinical course and demise.
Findings:
- Hemodynamic stability during surgery does not exclude pheochromocytoma.
- A negative chromaffin reaction can lead to misdiagnosis, as seen with an adrenocortical adenoma.
- Unsuspected pheochromocytomas may not always present with predictable intraoperative hypertensive crises.
Implications:
- Preoperative diagnosis of pheochromocytoma is essential, regardless of intraoperative stability.
- Suspicious retroperitoneal or intraabdominal masses warrant thorough investigation for pheochromocytoma.
- Clinical vigilance is required to avoid misdiagnosis in cases of atypical presentation.