Open AccessMalignant Spindle Cell Tumor of the Pericardium
Author(s) -
Fukuda Takeaki,
Ishikawa Hiroshi,
Tachikawa Yosf Shinzo,
Oguma Fumiaki,
Sakashita Shi,
Sakashita Isao
Publication year - 1989
Publication title -
acta patholigica japonica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.73
H-Index - 74
ISSN - 0001-6632
DOI - 10.1111/j.1440-1827.1989.tb02425.x
Subject(s) - pathology , pericardium , keratin , vimentin , mesothelioma , microfilament , desmin , immunohistochemistry , biology , anatomy , medicine , cell , cytoskeleton , genetics
A case of malignant spindle cell tumor occurring in the pericardium in presented. The tumor arose from the pericardium of a 51‐year‐old Japanese woman with no history of exposure to asbestos. The tumor extended into the pericardial and left pleural cavities. The primary and metastatic tumors consisted of fusiform cells with frequent mitoses. Ultrastructurally, the tumor cells possessed a discontinuous external lamina, cytoplasmic processes, microfilaments and desmosomal intercellular junctions. Immunohistochemical examination showed that most tumor cells were positive for Leu 7, and several for S 100 and glial fibrillary acidic protein. Unexpectedly, most of the tumor cells also expressed keratin. These findings favor a diagnosis of sarcomatous mesothelioma with aberrant antigenic expression or heterogeneous differentiation of neoplastic cells. Acta Pathol Jpn 39: 750‐754, 1989.