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Updated: Feb 20, 2026

A Novel Method: Super-selective Adrenal Venous Sampling
Published on: September 15, 2017
PHEOCHROMOCYTOMA DURING PREGNANCY-2 CASE REPORTS
Masato Yasui1, Yusuke Hattori1, Koichi Uemura1
1The Department of Urology and Renal Transplantation, Yokohama City University Medical Center.
Diagnosing pheochromocytoma during pregnancy is rare but crucial. Early detection and treatment of this adrenal tumor significantly improve outcomes for both mother and fetus, reducing high mortality risks.
Area of Science:
- Obstetrics and Gynecology
- Endocrinology
- Oncology
Background:
- Pheochromocytoma during pregnancy is a rare condition associated with high fetal and maternal mortality if not diagnosed promptly.
- Hypertension in pregnancy necessitates consideration of rare but serious underlying causes.
Purpose of the Study:
- To report two cases of successful pregnancy outcomes in women diagnosed with pheochromocytoma.
- To highlight the importance of early diagnosis and management of pheochromocytoma in pregnant patients.
Main Methods:
- Two pregnant patients diagnosed with pheochromocytoma (one adrenal, one extraadrenal) were managed medically and surgically.
- Magnetic resonance imaging (MRI) and urine catecholamine levels were used for diagnosis.
- Pharmacological management included doxazosin and labetalol hydrochloride.
- Delivery was achieved via Cesarean section at 35 weeks gestation in both cases.
- Surgical resection of pheochromocytoma was performed post-delivery.
Main Results:
- Both patients achieved successful pregnancy outcomes with good fetal and maternal health.
- Blood pressure was effectively controlled with medication prior to delivery.
- One patient experienced a recurrence of extraadrenal pheochromocytoma seven years post-delivery, successfully treated with resection.
Conclusions:
- Pheochromocytoma must be considered in the differential diagnosis of hypertension during pregnancy.
- Timely diagnosis and appropriate management, including medication and surgical intervention, are critical for reducing maternal and fetal mortality associated with pheochromocytoma.
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