Abstract

Pheochromocytoma during pregnancy is a rare cause of secondary hypertension with lethal consequences to both mother and fetus. As patients are young, the possibility of syndromic associations like MEN-2, VHL, NF-1, etc., needs to be considered. Three primigravida were diagnosed before the 20th week of gestation when they presented with classical triad of pheochromocytoma. Diagnosis of pheochromocytoma was confirmed by 24h urinary metanephrine/normetanephrine or epinephrine/norepinephrine levels. Non-contrast MRI abdomen could localize the tumor. One patient had medullary thyroid carcinoma with hyperparathyroidism, indicative of MEN-2A. Another patient had brain stem hemangioblastoma, pancreatic cysts and family history of spinal hemangioblastoma, so diagnosed to have Von Hippel-Lindau (VHL) syndrome. Whereas, the third patient had sporadic pheochromocytoma. Preoperatively, they required antihypertensive medications including prazosin and metoprolol. They underwent laparoscopic/open adrenalectomy between 19th and 21st week of gestation without complication. Histopathology in all the three patients revealed low-grade pheochromocytoma by pheochromocytoma of the adrenal gland scaled score. None required antihypertensive medications after surgery. All the three newborns were small for gestational age, while one neonate expired due to intra-cardiac rhabdomyoma. So, the timely evaluation and surgical intervention for pheochromocytoma avoid lethal consequences. Pregnancy leads to unmasking of pheochromocytoma as it is physiological stress. The syndromic association is more frequent as the population is younger. A poor fetal outcome like IUGR can be explained by endovascular changes in uterine vessel or due to the associated manifestations of MEN-2A, VHL syndromes. Family members should be screened for associated syndromic feature.

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