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  • Title: Giant cell tumor of the lung: an autopsy case report with immunohistochemical observations.
    Author: Kuroda M, Oka T, Horiuchi H, Ishida T, Machinami R, Hebisawa A.
    Journal: Pathol Int; 1994 Feb; 44(2):158-63. PubMed ID: 8025655.
    Abstract:
    Tumors resembling giant cell tumor (GCT) of bone are well known to occur in other organs and many cases have been reported to date. While GCT occurring as primary lesions in the lung are extremely rare, the authors experienced such a tumor at an autopsy of a 77 year old woman and subsequently performed histological and immunohistochemical examinations. The clinical and morphologic characteristics of this case are documented, and the literature concerning this type of tumor is reviewed. The present tumor of the lung was histologically characterized by proliferation of benign-looking osteoclast-like giant cells in association with slightly atypical mononuclear cells. The tumor cells were immunohistochemically positive for histiocytic markers but negative for epithelial markers. This case appears to be the first reported benign giant cell tumor of the lung in which histiocytic differentiation of mononuclear cells was suggested by immunohistochemistry.
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