嗜铬细胞瘤 (pheochromocytoma)是一种较少见的以继发性高血压为主要表现的内分泌系统肿瘤。随着临床医学的发展及诊断技术的提高 ,本病的确诊率逐渐提高 ,但少数具有特殊临床表现的病例仍易造成误诊并延误治疗。本病例曾长期被误诊为真性红细胞增多症。现报道如下。患者 ,女性 Pheochromocytoma is a rare endocrine tumor with secondary hypertension as its main manifestation. With the development of clinical medicine and the improvement of diagnostic techniques, the definitive diagnosis rate of the disease has gradually increased, but a few cases with special clinical manifestations can still cause misdiagnosis and delay treatment. This case has long been misdiagnosed as true polycythemia. The report is as follows. Patient, female