Papillary endothelial proliferation in cystic lymphangiomas. a lymphatic vessel counterpart of Masson's vegetant intravascular hemangioendothelioma
Kuo, T.; Gomez, L.G.
Archives of Pathology and Laboratory Medicine 103(6): 306-308
1979
ISSN/ISBN: 0003-9985 PMID: 582267 Document Number: 152529
Papillary endothelial proliferation similar to that of Masson's "vegetant intravascular hemangioendothelioma" of the blood vessels was observed in two cases of cystic lymphangiomas. They are believed to be the lymphatic vessel counterpart of Masson's entity. Twenty-five other specimens of various lymphangiomas examined (18 patients) did not contain the same change. As was emphasized previously for Masson's lesions, lymphangiomas containing similar endothelial changes should also not be mistaken for malignant vascular tumors, since in these two cases, no unusual clinical course supervened. Although the histogenesis of the lesion as proposed by Masson has been disputed, both primary and secondary endothelial proliferation seem to remain possible in the formation of these lesions.