Adam P, Schraml C, Sipos B, Fend F
Abteilung Allgemeine Pathologie und Pathologische Anatomie, Institut für Pathologie und Neuropathologie, Eberhard-Karls-Universität Tübingen, Liebermeisterstr. 8, 72076, Tübingen, Deutschland,
Pathologe. 2014 Feb;35(1):88-92. doi: 10.1007/s00292-013-1880-0.
In an epiphrenic lymph node of a 55 years old female patient who underwent surgical resection of a rectal adenocarcinoma epitheloid proliferations with papillary and solid growth pattern were seen additional to a metastasis of the carcinoma. Adjacent vessels contained similar infiltrates. Immunohistochemically a co-expression of pan-keratin, calretinin and WT1 was seen, suggestive for a diagnosis of a metastasis of a malignant mesothelioma. However, radiologic examination yielded no morphologic correlate to this suspicion. Further immunohistochemical work-up showed positivity for desmin, negativity for EMA, GLUT1, p53 and a low ki67-fraction of 2-3 %. Therefore, a final diagnosis of benign mesothelial proliferations disseminated into the lymph node and the adjacent vessels was made.
