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- W2402438634 abstract "Twenty-seven cases of surgically resected large cell carcinoma of the lung including nine cases of giant cell carcinoma were examined ultrastructurally and immunohistochemically. Ultrastructurally, of 18 large cell carcinomas other than giant cell carcinoma eight showed characteristic differentiation toward adenocarcinoma, four toward adenosquamous carcinoma, and one each toward squamous cell carcinoma and neuroendocrine cell carcinoma, but the remaining four were undifferentiated. Six of the nine giant cell carcinomas also showed features of adenocarcinoma, two showed features of squamous cell carcinoma, and one was undifferentiated carcinoma. Immunohistochemically, secretory component (SC) was observed in seven of 14 cases with features of adenocarcinoma and two of four cases with features of adenosquamous carcinoma. Carcinomas with only squamous cell differentiation did not stain for SC. Keratin staining was positive in five of the 14 with features of adenocarcinoma, three of the four cases with features of adenosquamous carcinoma and two of the three cases with features of squamous cell carcinoma. The numbers of tumor cells positive for keratin and/or SC were small. One carcinoma with neurosecretory type granules was stained positively for calcitonin. These findings indicate that many large cell carcinomas showed differentiation toward glandular cells and/or squamous cells, and some did not show any differentiation ultrastructuratly or immunohistochemically, indicating that the majority of large cell carcinomas are poorly differentiated form of either adenocarcinomas or squamous cell carcinomas." @default.
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- W2402438634 date "1985-06-01" @default.
- W2402438634 modified "2023-09-24" @default.
- W2402438634 title "Large Cell Carcinoma of the Lung—Ultrastructural and Immunohistochemical Studies" @default.
- W2402438634 doi "https://doi.org/10.1093/oxfordjournals.jjco.a039063" @default.
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