Expression of MUC1 and MUC4 in Gallbladder Adenocarcinoma

BACKGROUND: Recent reports have indicated that overexpression of mucin (MUC) 1 and/or MUC4 correlates with the occurrence and progression of extra-hepatobiliary malignancy. In this study, we investigated the expression of MUC1 and MUC4 and their prognostic significance in gallbladder adenocarcinoma. METHODS: We examined 54 surgical gallbladder adenocarcinoma samples by immunohistochemistry for MUC1 and MUC4 expression. Staining was evaluated as a sum score of extent and intensity, dividing the samples into low and high expression groups. RESULTS: The low expression group for both MUC1 and MUC4 was 10 samples (18.5%), and the high expression group was 44 samples (81.5%). High MUC1 expression was significantly correlated with more differentiated tumors (p=0.033), whereas high expression of MUC4 correlated with negative nodal status (p=0.012). Other pathological features were not correlated with MUC expression. Multivariate cox regression analysis showed that neither MUC1 nor MUC4 expression correlated with survival. CONCLUSIONS: Although there were some correlations found, a prognostic role for either MUC1 or MUC4 expression in gallbladder carcinoma was not identified in this study. Further investigation is required.

Primary Perivascular Epithelioid Cell Tumor (PEComa) of the Liver: A Case Report and Review of the Literature

Perivascular epithelioid cell tumor (PEComa) is a mesenchymal tumor consisting of distinctive perivascular epithelioid cells, and is commonly detected in the uterus. The liver is an uncommon site for primary PEComa. In this study, we report a case of primary hepatic PEComa in a 36-year-old woman. Upon gross examination, the tumor was a well-defined, brownish solid mass, measuring 6.5x5.2x4.5 cm. Microscopically, the tumor consisted largely of epithelioid cells and some spindle cells with a clear to eosinophilic cytoplasm and a rich network of delicate capillaries in the stroma. With the exception of their relatively large size and microscopically sinusoidal infiltrative growth pattern, all other histopathologic features of the tumor were consistent with their being benign. The tumor cells were positive for human melanoma black-45 and smooth muscle actin, and negative for cytokeratin-cocktail and c-kit.

Primary Perivascular Epithelioid Cell Tumor (PEComa) of the Liver: A Case Report and Review of the Literature

Perivascular epithelioid cell tumor (PEComa) is a mesenchymal tumor consisting of distinctive perivascular epithelioid cells, and is commonly detected in the uterus. The liver is an uncommon site for primary PEComa. In this study, we report a case of primary hepatic PEComa in a 36-year-old woman. Upon gross examination, the tumor was a well-defined, brownish solid mass, measuring 6.5x5.2x4.5 cm. Microscopically, the tumor consisted largely of epithelioid cells and some spindle cells with a clear to eosinophilic cytoplasm and a rich network of delicate capillaries in the stroma. With the exception of their relatively large size and microscopically sinusoidal infiltrative growth pattern, all other histopathologic features of the tumor were consistent with their being benign. The tumor cells were positive for human melanoma black-45 and smooth muscle actin, and negative for cytokeratin-cocktail and c-kit.

Two Cases of Autoimmune Hepatitis Accompanied by Connective Tissue Diseases / 대한내과학회지

Autoimmune hepatitis is a generally progressive chronic hepatitis of unknown etiology. Systemic lupus erythematosus (SLE) and Sjogren's syndrome are chronic, multifaceted inflammatory diseases that can affect every organ system, although hepatic involvement is rare. Here, we report two rare cases: autoimmune hepatitis associated with SLE and with primary Sjogren's syndrome. A 52-year-old woman and a 60-year-old woman were admitted our hospital with jaundice and pruritus. They had no history of viral hepatitis, alcohol consumption, or drug use. The pathological findings, clinical manifestations, and laboratory findings satisfied each of the diagnostic criteria for autoimmune hepatitis as well as for SLE and Sjogren's syndrome in the first and second cases, respectively. These patients were treated with prednisolone, and then followed regularly.

A case of renal cell carcinoma with mediastinal lymph node metastasis diagnosed by EBUS-TBNA / 대한내과학회지

Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) is a new method of sampling mediastinal lymph nodes to aid in diagnosing lymphadenopathy and in staging metastatic cancers. This paper describes a case of renal cell carcinoma with mediastinal and hilar lymph nodes metastasis that was diagnosed using EBUS-TBNA. A 17-year-old woman who had mediastinal lymphadenopathy and a right renal mass underwent imaging studies. The results of a first EBUS-TBNA suggested malignancy, but the type of tumor and exact site of the primary tumor were uncertain. Therefore, we repeated EBUS-TBNA with a lower pressure on the vacuum syringe. We successfully diagnosed the mediastinal lymph node metastasis from renal cell carcinoma.

Effects of Supplementation with a Schizandrin C Derivative DDB-mixed Preparation (DWP-04) on Antioxidant Activity in Cisplatin-induced Nephrotoxicity in Rats / 대한신장학회지

PURPOSE: This study investigated the effect of reducing cisplatin induced nephrotoxicity with DWP-04 that is the compound of Schizandrin C derivative biphenyldimethyl dicarboxylate (DDB), glutathione and selenium. For the purpose of observation is that how DWP-04 has influence on mechanism of reducing cisplatin induced nephrotoxicity with renal function test, free radical formation and detoxification enzyme system in renal tissue. METHODS: Five groups of rats were dosed with vehicle, cisplatin (2 mg/kg i.p.), cisplatin+DWP-04 (100, 200 mg/kg po), or cisplatin+sodium thiosulfate (200 mg/kg i.p.) daily for 4 weeks. RESULTS: Serum creatinine, lactate dehydrogenase and activity of hydroxy radical increased in the cisplatin group and suppressed in the cisplatin+DWP-04 group compared to the cisplatin group. The renal tissue concentration of lipid peroxidase and lipofuscin were increased in the cisplatin group compared to the other groups. The activity of aminopyrine N-demethylase, aniline hydroxylase, aldehyde oxidase and xanthine oxidase, of which free radical formation system in kidney was also decreased in the cisplatin+DWP-04 group compared to the cisplatin and cisplatin+sodium thiosulfate group. The activity of detoxification system of free radical, such as glutathione S-transferase, superoxide dismutase, catalase and glutathione peroxidase were markedly increased in the cisplatin+DWP-04 group than the cisplatin and the cisplatin+sodium thiosulfate group (p<0.05). CONCLUSION: It can be concluded that the mechanism of decreasing cisplatin-induced nephrotoxicity by DWP-04 is that the decreasing of the amount of lipid peroxide and lipofuscin in the renal tissue by increasing activity of the antioxidant defense system and the decreasing of reactive oxygen species by increasing detoxification enzyme activity.

A Case of Pancreatic Dual Wirsung Ducts in a Patient with von Hippel-Lindau Disease / 대한소화기내시경학회지

Rare autosomal dominant disorders associated with various tumors and cysts, and several kinds of pancreatic lesions have been described in patients with von Hippel- Lindau (VHL) disease, but there have been few studies concerned with the variations of the pancreatic duct. We experienced a case of pancreatic dual Wirsung ducts in a patient with VHL disease. Computed tomography scans showed that multiple cysts had nearly completely replaced the pancreas, there was a solid tumor on the uncinate process of the pancreas and a left renal mass suggested renal cell carcinoma. ERCP shows that the Santorini duct and Wirsung duct were fused in a normal fashion, and another Wirsung duct had shrub-like branches that are commonly seen in pancreatic divisum.

Experience of Biliary Atresia-Long-term Survival

Biliary atresia (BA) is an uncommon neonatal surgical disease that has a fatal outcome if not properly treated. The survival rates of the patients with native liver after Kasai's operation in countries outside Japan are not so good. We reviewed the results of 22 cases of biliary atresia treated in Kosin University Hospital between October 1987 and March 2001. There were 13 males and 9 females aged from 21 to 106 days (mean 52 days). There were 3 cases of Type I (13.6%), and 3 of Type II (13.6%), and 16 Type III (72.7%). The operative methods were resection of the common bile duct remnant and cyst followed by Roux-en-Y hepaticojejunostomy in 3 cases for Type I BA; Kasai I in 15 cases, Kasai II in 1 case, and Ueda's operation in 3 cases for Types II and III BA. There was no death within the first 30 days after operation. We were able to follow 21 of the 22 patients (95.4%) for more than 5 years. The actual 5 year survival rate (YSR) was 40.9%. One Type I case received a living-related liver transplantation at 6 years of age because of the multiple intrahepatic stones and liver cirrhosis. Five YSR after biliostomy group (Kasai II and Ueda op.) was 75% (3/4) while that of Kasai I was 20% (3/15). One case had no bile duct in the resected fibrotic plaque on microscopic review and died 8 months after Kasai I operation, would have been a strong candidate for early liver transplantation. From the above result, our conclusions are as follows; (1) early liver transplantation should be considered for cases of no bile duct after pathologic examination of the resected specimen, (2) measures to prevent postoperative cholangitis and prevention of postoperative liver cirrhosis are needed, (3) liver transplantation program should be available for failed cases.

A Case of Rothmund-Thomson Syndrome with Pure Red Cell Aplasia, Autoimmune Hemolytic Anemia and Chronic Respiratory Infection / 소아과

Rothmund-Thomson syndrome(RTS), or poikiloderma congenita, is a rare, multisystem disorder. It is inherited genetically as an autosomal recessive trait, occurring predominantly in females(1.4 : 1). The RTS is comprised of poikiloderma, short stature, sparse hair, juvenile cataracts, skeletal defects, dystrophic teeth and nails, photosensitivity, and hypogonadism. We report a case of RTS who died of bleeding from esophageal varices, pulmonary hemorrhage and septic shock at 25 years of age and had suffered from various diseases such as transient pure red cell aplasia, autoimmune hemolytic anemia, chronic maxillary sinusitis, bronchiectasis, secondary hemochromatosis, and liver cirrhosis in addition to poikiloderma, alopecia, and sexual infantalism which are typical of RTS.

The Relationship between PTEN Tumor Suppressor Gene and Vascular Endothelial Growth Factor-Mediated Angiogenesis in Breast Cancer

BACKGROUND: PTEN is a novel tumor suppressor gene located at chromosome 10q23.3. Loss of PTEN function has been implicated in the progression of several types of cancer. Angiogenesis is a critical factor in tumor growth and metastasis. We investigated PTEN expression in invasive breast cancers and described its role in the regulation of angiogenesis related to vascular endothelial growth factor (VEGF). METHODS: Forty-five, surgically resected, formalin-fixed and paraffin embedded breast cancer tissue samples were analyzed for PTEN and VEGF expressions by immunohistochemistry and for microvessel density (MVD) by CD34 immunostaining. RESULTS: Loss of PTEN expression was found in 35.6% (16/45) of the breast cancer tissues, all of which showed positive VEGF expression. Among 29 cases with normal PTEN expression, 15 (51.7%) were VEGF positive. MVD was significantly higher in tumors with a loss of PTEN expression than in those with normal PTEN expression. CONCLUSION: A loss of PTEN expression might increase the VEGF-related angiogenesis in breast cancer. There was no correlation between PTEN expression and clinicopathologic parameters. Detection of the loss of PTEN expression may serve as a useful biologic marker for progression in invasive breast cancer.

Gastric Carcinoma and Epstein-Barr Virus Association (EBVaGC): Pusan Kyungnam Area

PURPOSE: To report on the incidence of EBVaGC and its associated clinical and pathological characteristics. METHODS: Between Nov. 1998 and Mar. 2000, 183 gastric cancers were resected, and the histology and lymphocytes infiltration reviewed. The EBVaGC was determined by EBER ISH, along with the clinical characteristics, such as sex distribution, tumor location, ABO blood group, status of H. pylori and postop survival. RESULTS: Out of 183 gastric adenocarcinomas 10 were EBVaGCs (5.5%), 7/129 males and 3/54 females. The incidences of EBVaGC, according to the WHO histology, were 7.1% (4/56) for tub. po, 9.3% (4/43) tub. mo, 4.1% (2/48) tub. well, 0/11 muc., 0/3 pap. and 0/22 sig. types. The incidences of EGVaGC, in relation to the severity of lymphocytic infiltration of tumor, were 0% (0/141) for Less- than-minimal, 21% (8/38) for Moderate and 50% (2/4) for Severe infiltration of the lymphocytes (P=0.000). The incidences of EGVaGC, according to the location of gastric cancer, were 26.3% (5/19), 7.3% (3/41) and 1.8% (2/110) for the upper, middle and lower stomach, respectively (P= 0.000). The incidences of EBVaGC were 3.1% (3/96) for stages I-II and 8% (7/87) for stages III-IV. The blood type distributions of the EBVaGCs, by the ABO blood group system were 3 A type, 6 B type, no O type and 1 AB type compared with 42.8% (74), 27.1% (47), 19.6% (34) and 10.5% (18) of A, B, O and AB with the 173 non EBVaGC P=0.079). The H. pylori status was positive in 9/10 EBVaGC, and in 157/163 (96.3%) of the non-EBVaGC. The survivals of the EBVaGC and non EBVaGC were 80 and 61.4% (105/171), rspectively. CONCLUSION: The incidence of EBVaGC was 5.5%. There was no difference in the sex ratio with EBV ( )ve gastric cancer. Six out of the 10 EBVaGC were ABO blood group B.

Fine Needle Aspiration Cytology of Malignant Myoepithelioma of the Salivary Gland: A Case Report / 대한세포병리학회지

Malignant myoepithelioma (myoepithelial carcinoma), is a very rare malignant epithelial neoplasm accounting for less than 1% of all salivary gland tumors and has an intermediate malignant potential. We report a case of malignant myoepithelioma arising in the left parotid gland in a 54-year-old man, which was difficult to differentiate from pleomorphic adenoma and other malignant salivary gland neoplasms. Fine needle aspiration cytology of the parotid gland showed cellular smear, composed of overlapped sheets and clusters or individually scattered tumor cells without any acinic or ductal structures. The tumor cells were rather uniform, with distinct cell borders and moderate amount of cytoplasm. The eccentrically located nuclei were oval to round and pleomorphic and showed prominent nucleoli. A few clear cells were noted in the cellular aggregates. Metachromatic matrix was seen between individual tumor cells in a lacelike fashion, resembling pleomorphic adenoma. According to the immunohistochemical staining, we recognized that the component cells are myoepithelial in nature, showing reactivity for the S-100 protein, vimentin, and actin.

A New Liquid Embolic Agent(Embol) for Transcatheter Renal Artery Embolization: An Experimental Study in Rabbit

PURPOSE: To evaluate the effectiveness and safety of a new liquid embolic agent in renal arterial embolization in the rabbit, and its clinical applicability. MATERIALS AND METHODS: A new embolic agent, Embol, was obtained by partial hydrolysis of polyvinyl acetate and dissolved in a mixture of 45% ethanol and 55% non-ionic contrast medium. Its radioopacity was therefore good. An average of 0.8 cc(0.5-0.9 cc) of Embol was used to embolize the renal artery of one kidney in 15 rabbits. The immediate effect of this was examined angiographically 5 minutes after the procedure. To permit histologic examination, five rabbits in each group were sacrificed 3 days (I), 2 weeks (II), and 4 weeks (III) after embolization: prior to embolization and prior to sacrifice, one rabbit in each group underwent renal scanning, and prior to sacrifice all underwent follow-up angiography. In three rabbits, blood urea nitrogen (BUN), creatinine, sodium(Na), and potassium(K) levels were measured before and 1, 3, 5, 7 and 14 days after embolization. RESULTS: Embol was easy to use and its radiopacity was good. Five minutes after embolization, angiography showed that total occlusion of the main renal or interlobar artery had been achieved in all rabbits. Serum BUN, creatinine, Na and K levels were within normal limits. Follow-up angiogram obtained in each group showed persistent occlusion of the renal artery in all but one rabbit in group I and one in group III. Renal scans revealed no evidence of radionuclide uptake in embolized kidneys, which were slightly enlarged in group I but became gradually smaller in groups II and III. In all animals, histologic examination showed diffuse coagulation necrosis of the embolized kidneys and in group III the cortex of these was extensively calcified. In group I the renal artery showed an apparently fresh occluding thrombosis, and in groups II and III a completely organized thrombosis was present. In group III this was calcified. CONCLUSION: Because of its good radioopacity, Embol is easy to controa, and is effective for renal artery embolization. As a permanent embolic agent, it appears suitable for clinical applications.

Myxoglobulosis of the Appendix

Myxoglobulosis is a rare morphologic variant of appendiceal mucocele. We reported herein a case of myxoglobulosis in a 50-year-old man who presented with an appendiceal mass following a several months symptomatic course. Double contrast barium study showed filling defect in cecum. Computed tomograph showed well defined tubular, cystic lesion with slight wall enhancement at the appendiceal area. Laparotomy disclosed a distended appendix, measuring 12.0 4.0 cm, without perforation containing white to pale yellowish globules, reminiscent of parasitic eggs. Microscopically globules are composed of centers of inflamed granulation tissue and amorphous granular necrotic debris, surrounded by rings of inspissated mucous shells. The wall shows devoid of a lining epithelium. We performed ileocecectomy.

Expression of c-fos, p53, Transforming Growth Factor-beta1 and Glial Fibrillary Acidic Protein in Hippocampus Following Transient Forebrain Ischemia in Mongolian Gerbil

BACKGROUND: Recent studies have shown that delayed neuronal death is closely associated with early gene (c-fos or c-jun)-related apoptosis in addition to hypoxia-induced energy deficiency in the hippocampus. METHODS: To elucidate the role of c-fos, p53, TGF-1 and glial fibrillary acidic protein (GFAP) and their interactions, cellular expression with immunohistochemistry was examined during the time period of 10-minute hypoxia with variable reperfusion intervals in the mongolian gerbil hippocampus. RESULTS: Hippocampal CA1 shows progressive and delayed neuronal damage beginning from the 24-hour reperfusion, while CA2-3 reveals non-progressive, eosinophilic inclusion body within the neuron throughout the time period. CA1 neurons show short-term expressions of c-fos prior to significant cellular damage. However, CA2-3 neurons show persistent expressions by 3-day reperfusion. In both CA1 and CA2-3, p53 is expressed for the short-term period of the early time points. However, its intensity and duration are much less in CA2-3 than in CA1. While TGF-1 is transiently expressed at 24-hour reperfusion in CA1, its expression in CA2-3 is persistent in late time points. Early expression of GFAP is observed in the pyramidal layer of CA1 prior to neuronal damage and progressively increased in the late time points. CONCLUSION: These results suggest that c-fos and TGF-1 may play a role in neuronal viability in the early- and late time points. Astrocytes may also be responsible for the active protective mechanism to neuronal death, as well as reactive gliosis. The hypoxia-induced neuronal damage is, in part, a p53-dependent process in the CA1 neurons.

Primary Malignant Fibrous Histiocytoma of the Jejunum

Malignant fibrous histiocytoma (MFH) occurs primarily in the extremities and trunk, however primary malignant fibrous histiocytoma of the alimentary tract, particularly of the jejunum, is uncommon. This case report presents a case of malignant fibrous histiocytoma as the primary lesion of the jejunum in a 42-year-old male patient with a 10-day history of melena. A small bowel tumor was resected without complication. The final diagnosis was based on the pathological report of the surgical specimen.

Microvessel Density and Expressions of bcl-2, p53, and Vascular Endothelial Growth Factor in Endometrial Carcinoma

BACKGROUND: Recent studies have shown that oncogenes and tumor suppressor genes are involved in tumorigenesis and tumor progression. The inverse role of bcl-2 and p53 in endometrial carcinomas has been debated. Moreover, their roles in angiogenesis as well as the interrelationship between prognostic clinico-pathological factors and angiogenesis have not been elucidated in endometrial carcinomas. METHODS: The expression rates of bcl-2, p53 and vascular endothelial growth factor (VEGF) in thirty-eight cases of surgically removed endometrial carcinomas were investigated using an avidin-biotin complex method of immunohistochemistry. CD34 immunostain for microvessel density (MVD) was also performed. RESULTS: The expression rate of bcl-2 was higher in the endometrioid type carcinoma (43.8%) than in the non-endometriod type carcinoma (16.7%). There was a significantly increased bcl-2 expression in grade I compared to grades II and III (P<0.05). The p53 expression rate was significantly higher in the non-endometriod type carcinoma than in the endometrioid type carcinoma (P<0.05).The VEGF expression rate was higher in the non-endometriod type carcinoma (83.3%) than in the endometrioid carcinoma (28.1%). Differences of MVD according to stages, histological types, grades and bcl-2, p53 and VEGF expressions were not noted. CONCLUSIONS: The expression rate of bcl-2 increases in the low grade endometrial carcinoma more than in the high grade one, so it may be suggested that bcl-2 expression could be used for an ancillary prognosticator. However, p53 and VEGF expressions and microvessel density may not have any prognostic value.

A Case of Primary Malignant Melanoma of Uterine Cervix / 대한산부인과학회잡지

Malignant melanoma is usually a neoplasm of the skin and mucous membranes which is relatively rare, comprising 1% of all cancers. In women, approximately 3% of malignant melanoma are located in the genitalia with the vast majority occuring in the vulva and very rarely on the ovary, uterus, and uterine cervix. Opinions about its histogenesis, diagnostic criteria and elective treatment are controversial, because of rare manifestation. We report a case of primary malignant melanoma of uterine cervix with a brief review of the literature.

Hyalinized Hemangioma of the Liver: A case report

We report a case of 50-year-old man with hyalinized hemangioma of the liver. This tumor was detected incidentally during surgical operation for gall stone and was preoperatively diagnosed as intrahepatic stone. A 2.5 2 cm sized gray to white hard mass was found in the left lobe of the liver. Histologically, the tumor was composed of dense collagenous tissue with marked hyalinization, calcification, and ossification admixed with scattered sclerotic vessels. Abundunt elastic fibers were noted in the hyalinized tissue. Totally hyalinized hemangioma is very uncommon and could be erroneously diagnosed as a malignant tumor by preoperative radiologic examination.

Expressions of MAGE-3, PCNA, p21, and p53 Proteins in the Hypopharyngeal Squamous Cell Carcinoma Cell Line (PNUH-12) Analysed by Bivariate Flow Cytometry

MAGE (melanoma antigen gene) is a tumor specific shared antigen, presented by HLA class I molecules, which is recognized by cytotoxic T lymphocytes. MAGE proteins are expressed in malignant tumor cells, in contrast to no expression in normal or benign tissues except for testis and placenta. MAGE might be a potential target for immunotherapy of malignant tumors. However, its biological aspects associated with cell cycle are not yet described. The flow cytometry is a useful tool for objective and quantitative analyses of heterogenous tumor cell population. To understand the status of MAGE related to cell cycle and its relationship with p53 as the G1 checkpoint regulator, p21, and PCNA as a proliferative index, we investigated expression of MAGE-3 protein, mutant p53, p21, and PCNA by flow cytometry and immunohistochemical stain. In addition, double stains for MAGE-3/p53, p53/PCNA, and p53/p21 were analysed with bivariate flow cytometry. DNA histograms using MAGE-3/PI (DNA) and p53/PI (DNA) were also analysed. The cell line (PNUH- 12) used for this study originated from a hypopharyngeal squamous cell carcinoma, which has point mutation (exon 7, C-->G) of p53. The expression rate of MAGE-3 was 83%, PCNA 85%, and p53 81%. No expression for p21 was identified. MAGE-3 was expressed in cytoplasm, while both PCNA and p53 were expressed in nuclei of tumor cells. With bivariate analyses, coexpression rates of MAGE-3/p53 and p53/PCNA were 0.96 and 0.97, respectively. Both MAGE-3 and p53 showed constantly high level throughout the cell cycle. These results suggest that expression of MAGE-3 and mutant p53 is not dependent on the cell cycle. p21 seems to be inactivated.