嗜鉻細胞瘤，常稱藥理性炸彈。在幼童是一種罕見腫瘤。它是兒童高血壓潛在的致命病因約佔1%。我們報告一13歲嗜鉻細胞瘤男孩在四年內併發反覆中風。臨床表現強調完整病史的重要性及透過高度懷疑才得以正確診斷。幼童嗜鉻細胞瘤較成人多雙側、多發性及腎上腺外。僅約2%的幼童嗜鉻細胞瘤為惡性的，且大多數是位於腎上腺外。

Pheochromocytoma, named as "pharmacologic bomb", is an unusual tumor in the pediatric age group. It is a potentially lethal cause of childhood hypertension and accounts for about 1% of pediatric hypertensive patients. We report a13-year-old boy with pheochromocytoma complicated with repeated stroke attacks during four years. The clinical presentation highlights the need for a thorough history and high index of suspicion for accurate diagnosis. Pheochromocytoma in children is more often bilateral, multicentric and extra-adrenal in comparision with those in adults. Only about 2% of pheochromocytomas in children are malignant but most of those are extra-adrenal.