Open AccessULTRASTRUGTURAL STUDIES OF A THYMIC CARCINOID TUMOR
Author(s) -
Kaneko Hiroshi,
Ishikawa Shinobu,
Sumida Toshiko,
Sekiya Masao,
Toshima Muneatsu,
Kobayashi Hiroshi,
Naka Yoshikazu
Publication year - 1980
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.1440-1827.1980.tb01360.x
Subject(s) - cytoplasm , centriole , ultrastructure , pathology , microfilament , tumor cells , biology , cell , microbiology and biotechnology , medicine , cancer research , cytoskeleton , genetics
A case of a thymic carcinoid tumor is presented. The tumor was a mass measuring 7 by 6 by 5 cm in size. Microscopically, the tumor was composed of a mixture of round, cytoplasm‐rich cells in addition to the predominantly spindle‐shaped cells. The ultrastructural observation showed many secretory granules, about 120 mμ in size, in almost every cell of the tumor. In the cytoplasm many microfilaments were seen, in places forming large nodules and bundles. Centrioles were often observed in the tumor cells. Sometimes three or even more centrioles were seen in a single cell.