Renal collecting duct cancer is a rare malignant tumor, which accounts for 1% to 2% of epithelial kidney tumors. Its pathologial appearance has been easily misdiagnosed as a mammilliform renal cell carcinoma or as oth...Renal collecting duct cancer is a rare malignant tumor, which accounts for 1% to 2% of epithelial kidney tumors. Its pathologial appearance has been easily misdiagnosed as a mammilliform renal cell carcinoma or as other tumors. The malignancy of renal collecting duct cancer is high, with early metastasis and poor prognosis. The clinical data for 2 cases of the tumor are discussed in this report, including reports on the histopathology and the changes in immunohistochemistry.展开更多
TO THE EDITORI read the article by Kim et al with great interest. This is a rare case of systemic sarcoidosis in a patient with chronic hepatitis C without treatment for neither sarcoidosis nor hepatitis C. In this ca...TO THE EDITORI read the article by Kim et al with great interest. This is a rare case of systemic sarcoidosis in a patient with chronic hepatitis C without treatment for neither sarcoidosis nor hepatitis C. In this case, spontaneous resolution of sarcoidosis was noted while hepatitis activities were aggravating. The authors suggest that this relationship mentioned above was not a fortuitous coincidence and these two diseases share a common pathogenesis due to the fact that interferon-induced immune activation is an important mechanism of viral replication suppression in chronic hepatitis C, hepatitis activities may be suppressed when chronic hepatitis C is combined with active sarcoidosis.展开更多
文摘Renal collecting duct cancer is a rare malignant tumor, which accounts for 1% to 2% of epithelial kidney tumors. Its pathologial appearance has been easily misdiagnosed as a mammilliform renal cell carcinoma or as other tumors. The malignancy of renal collecting duct cancer is high, with early metastasis and poor prognosis. The clinical data for 2 cases of the tumor are discussed in this report, including reports on the histopathology and the changes in immunohistochemistry.
文摘TO THE EDITORI read the article by Kim et al with great interest. This is a rare case of systemic sarcoidosis in a patient with chronic hepatitis C without treatment for neither sarcoidosis nor hepatitis C. In this case, spontaneous resolution of sarcoidosis was noted while hepatitis activities were aggravating. The authors suggest that this relationship mentioned above was not a fortuitous coincidence and these two diseases share a common pathogenesis due to the fact that interferon-induced immune activation is an important mechanism of viral replication suppression in chronic hepatitis C, hepatitis activities may be suppressed when chronic hepatitis C is combined with active sarcoidosis.
