Figure 2From: Occult very small lung carcinoma with a solitary brain metastasis that is clinically diagnosed as cavernous hemangioma: a case reportHistology of the brain tumor. Undifferentiated carcinomatous tissue is seen. The tumor cells were round and have hyperchromatic vesicular nuclei. Mitotic and apoptotic figures are scattered. No differentiation is seen. The pathological diagnosis was undifferentiated carcinoma. HE, ×100.Back to article page