Tokumoto H, Nomura S, Yamaguchi K, Yoshizumi M, Kamoshida S
Department of Internal Medicine, Hyogo Prefectural Amagasaki Hospital, Japan.
Nihon Kyobu Shikkan Gakkai Zasshi. 1996 Oct;34(10):1125-9.
Hemangiopericytoma is a rare tumor originating from pericytes. In May 1988, a 33-year-old man was found to have a well-defined nodular shadow in the right upper lobe during a routine chest X-ray examination. Although the mass had been thought to be benign, in December 1992 it was found to have grown. In May 1993, the patient was referred to our hospital for further examination. A chest X-ray film and a high-resolution CT scan revealed a well-defined nodule in the right upper lung field without vascular gathering or pleural puckering. The tumor was slightly less dense than was soft tissues. There was no evidence suggesting another primary tumor or metastasis. In July 1993, because the mass was suspected to be a low-grade malignant tumor, a segementectomy (rt-S2) was done. On the basis of histologic, immunohistochemical and electronmicroscopic findings, pulmonary hemangiopericytoma was diagnosed. The postoperative course was uneventful. The patient has been well for 2 years and five months after the operation, with no sign of recurrence or metastasis.
血管外皮细胞瘤是一种起源于周细胞的罕见肿瘤。1988年5月，一名33岁男性在常规胸部X线检查中发现右上叶有一个边界清晰的结节状阴影。尽管该肿块曾被认为是良性的，但1992年12月发现它长大了。1993年5月，该患者被转诊至我院进一步检查。胸部X线片和高分辨率CT扫描显示右上肺野有一个边界清晰的结节，无血管聚集或胸膜皱缩。肿瘤密度略低于软组织。没有证据表明存在其他原发性肿瘤或转移。1993年7月，由于怀疑该肿块为低度恶性肿瘤，进行了肺段切除术（右肺上叶S2段）。根据组织学、免疫组织化学和电子显微镜检查结果，诊断为肺血管外皮细胞瘤。术后过程顺利。患者术后2年零5个月情况良好，无复发或转移迹象。
