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第41巻第2号目次 | Japanese/English |
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─ 症例 ─
A Case of Biphasic Pulmonary Blastoma
Hiroyuki Ito*1, Yasufumi Hayashi*1, Takamitsu Maehara*1, Yoshinori Takanashi*1, Yukio Nakatani*2 and Yoshiaki Inayama*2*1 First Department of Surgery, Yokohama City University, School of Medicine, *2 The Division of Anatomical Pathology, Hospital of Yokohama City University
Background: Biphasic pulmonary blastoma is a rare disease. On the basis of mesenchymal components, this tumor was classified into high-grade adenocarcinoma of fetal lung type (H-FLAC) and low-grade adenocarcinoma of fetal lung type (L-FLAC). Case: A 69-year-old woman had a cough, shortness of breath, and dyspnea in December 1994, and these symptoms gradually worsened. A local physician found an abnormal shadow on a chest radiogram in April 1995, and the patient was subsequently admitted to our hospital. A computed tomographic scan of the chest revealed a solid tumor in S6 of the left lung. Histopathological examination of a specimen obtained by transbronchial biopsy showed evidence of malignancy, but a definitive diagnosis could not be established. The tentative diagnosis was a primary malignant tumor of the lung, and a left pneumonectomy was performed in June 1995. Pathological examination, including immunohistochemical analysis, suggested a biphasic pulmonary blastoma, which had an epithelial component of high-grade adenocarcinoma of fetal lung type. Conclusion: We describe a case of biphasic pulmonary blastoma associated with H-FLAC epithelial components.
索引用語：Pulmonary blastoma, Lung neoplasm, Adenocarcimoma
受付日：2000年10月7日
受理日：2001年1月10日
肺癌 41 (2)：131─135，2001
