We report a case of carcinoma ex pleomorphic adenoma of a sublingual gland in a 70-year-old man.Under a clinical diagnosis of benign salivary gland tumor,excision of the mass with the sublingual salivary gland in an e...We report a case of carcinoma ex pleomorphic adenoma of a sublingual gland in a 70-year-old man.Under a clinical diagnosis of benign salivary gland tumor,excision of the mass with the sublingual salivary gland in an en bloc fashion via an intraoral approach was performed.Histopathologically,there was a rupture of the fibrous capsule and diffuse cell-rich sheets composed of myoepithelial cells with round nuclei were also seen.Immunohistochemically,the cells that composed of cell rich sheets were positive to smooth muscle actin.Final diagnosis of myoepithelial carcinoma ex pleomorphic adenoma was made.展开更多
BACKGROUND Adenoid cystic carcinoma(ACC)is a common malignant tumor of salivary gland.The lung and liver are frequent sites of distant metastasis.Liver metastasis as the initial clinical manifestation of sublingual gl...BACKGROUND Adenoid cystic carcinoma(ACC)is a common malignant tumor of salivary gland.The lung and liver are frequent sites of distant metastasis.Liver metastasis as the initial clinical manifestation of sublingual gland ACC is very rare.CASE SUMMARY A 51-year-old Chinese woman presented with a painless mass in the right lobe of liver.The tumor was composed of ductal cells and myoepithelial cells with a morphology including tubiform and cribriform structures.Immunostaining results showed ductal cells positive for CK7,CK14,CK19,CD117,and 34βE12,and negative for MYB,vimentin,ER,PR,and CEA.The myoepithelial cells were positive for p63,calponin and CK5/6.Metastatic salivary ACC was considered,and a sublingual gland mass was revealed by computed tomography.Histological evaluation confirmed primary sublingual gland ACC.Fluorescence in situ hybridization(FISH)did not find an MYB-NFIB fusion gene in specimens from either the primary or metastatic ACC tumors.The sublingual gland ACC relapsed in 20 mo.The recurrent lesion disappeared following local radiation therapy and computed tomography-guided radioactive seed implantation.The patient remains in good condition until now.CONCLUSION Metastatic sublingual gland ACC with initial clinical manifestation as a liver mass is very rare,and was pathologically confirmed in this patient by its histological appearance.Primary hepatic tumors and metastatic carcinomas should be included in the differential diagnosis.Immunohistochemical detection of MYB protein and MYB-NFIB fusion gene detection by FISH can be helpful,but occasional negative results confuse the diagnosis.展开更多
The purpose of this paper was to evaluate the relationship between the thrombosis and secretory duct dilation, lesion size, clinical types, nature （primary or recurrent） and duration of illness in the development of...The purpose of this paper was to evaluate the relationship between the thrombosis and secretory duct dilation, lesion size, clinical types, nature （primary or recurrent） and duration of illness in the development of ranula. A total of 229 cases of sublingual gland cysts were treated with surgical resection from Jan. 1990 to Feb. 2010. The patients＇ data were investigated on histopathological findings, size of ranula, the clinical types, nature of ranula （primary or recurrent） and duration of illness. Sections from the paraffinembeded blocks were HE-stained. CK expression was immunohis-tochemically detected. Among 229 cases the incidence of venous thrombosis was 58.52%. The incidence of venous thrombosis with or without duct dilation was 73.25% and 26.39% respectively, with a significant difference between the two groups （P〈0.005）. The incidence of venous thrombosis of ranulas with diameter larger or less than 3 cm was 72.22% and 46.28% （P〈0.005）. The incidence of venous thrombosis of oral ranula, plunging ranula and mixed ranula was 49.37%, 77.19% and 85.71% respectively, with a significant difference found between oral and plunging or mixed ranula （P〈0.01）. The incidence of venous thrombosis in ranula patients with duration of illness longer or less than 3 months was 69.77% and 51.75% （P〈0.01）. The incidence of venous thrombosis with recurrent and primary ranulas was 51.85% and 64.85%, without a significant difference noted between them （P〉0.05）. It is concluded that the formation of venous thrombosis was related to the dilation of secretory duct, lesion size, clinical types, duration of lesion but formation of venous thrombosis was not related to the nature （primary or recurrent） of ranulas.展开更多
文摘We report a case of carcinoma ex pleomorphic adenoma of a sublingual gland in a 70-year-old man.Under a clinical diagnosis of benign salivary gland tumor,excision of the mass with the sublingual salivary gland in an en bloc fashion via an intraoral approach was performed.Histopathologically,there was a rupture of the fibrous capsule and diffuse cell-rich sheets composed of myoepithelial cells with round nuclei were also seen.Immunohistochemically,the cells that composed of cell rich sheets were positive to smooth muscle actin.Final diagnosis of myoepithelial carcinoma ex pleomorphic adenoma was made.
文摘BACKGROUND Adenoid cystic carcinoma(ACC)is a common malignant tumor of salivary gland.The lung and liver are frequent sites of distant metastasis.Liver metastasis as the initial clinical manifestation of sublingual gland ACC is very rare.CASE SUMMARY A 51-year-old Chinese woman presented with a painless mass in the right lobe of liver.The tumor was composed of ductal cells and myoepithelial cells with a morphology including tubiform and cribriform structures.Immunostaining results showed ductal cells positive for CK7,CK14,CK19,CD117,and 34βE12,and negative for MYB,vimentin,ER,PR,and CEA.The myoepithelial cells were positive for p63,calponin and CK5/6.Metastatic salivary ACC was considered,and a sublingual gland mass was revealed by computed tomography.Histological evaluation confirmed primary sublingual gland ACC.Fluorescence in situ hybridization(FISH)did not find an MYB-NFIB fusion gene in specimens from either the primary or metastatic ACC tumors.The sublingual gland ACC relapsed in 20 mo.The recurrent lesion disappeared following local radiation therapy and computed tomography-guided radioactive seed implantation.The patient remains in good condition until now.CONCLUSION Metastatic sublingual gland ACC with initial clinical manifestation as a liver mass is very rare,and was pathologically confirmed in this patient by its histological appearance.Primary hepatic tumors and metastatic carcinomas should be included in the differential diagnosis.Immunohistochemical detection of MYB protein and MYB-NFIB fusion gene detection by FISH can be helpful,but occasional negative results confuse the diagnosis.
文摘The purpose of this paper was to evaluate the relationship between the thrombosis and secretory duct dilation, lesion size, clinical types, nature （primary or recurrent） and duration of illness in the development of ranula. A total of 229 cases of sublingual gland cysts were treated with surgical resection from Jan. 1990 to Feb. 2010. The patients＇ data were investigated on histopathological findings, size of ranula, the clinical types, nature of ranula （primary or recurrent） and duration of illness. Sections from the paraffinembeded blocks were HE-stained. CK expression was immunohis-tochemically detected. Among 229 cases the incidence of venous thrombosis was 58.52%. The incidence of venous thrombosis with or without duct dilation was 73.25% and 26.39% respectively, with a significant difference between the two groups （P〈0.005）. The incidence of venous thrombosis of ranulas with diameter larger or less than 3 cm was 72.22% and 46.28% （P〈0.005）. The incidence of venous thrombosis of oral ranula, plunging ranula and mixed ranula was 49.37%, 77.19% and 85.71% respectively, with a significant difference found between oral and plunging or mixed ranula （P〈0.01）. The incidence of venous thrombosis in ranula patients with duration of illness longer or less than 3 months was 69.77% and 51.75% （P〈0.01）. The incidence of venous thrombosis with recurrent and primary ranulas was 51.85% and 64.85%, without a significant difference noted between them （P〉0.05）. It is concluded that the formation of venous thrombosis was related to the dilation of secretory duct, lesion size, clinical types, duration of lesion but formation of venous thrombosis was not related to the nature （primary or recurrent） of ranulas.
