Primary mixed germ cell tumor is a very rare tumor in the cranial cavity. It is composed of varying combination of germ cell neoplasms, such as germinoma, embryonal carcinoma, choriocarcinoma and teratoma. The authors experienced a case of mixed germ cell tumor developing in the floor of the third ventricle, in a twelve years old boy. He was admitted to the hospital, because of headache, eyeball pain, diplopia and vomiting. Brain CAT scan revealed a round tumor density in the floor of the third ventricle. Tumor marker study, preoperatively checked, revealed beta-HCG, 439.8 mIU/ml and alpha-fetoprotein, under 20 ng/ml. On operation, there was a dark brown firm mass up to 3.0 cm in the third ventricle, that invaded into the foramen Monro. With microscopic examination, this tumor is composed chiefly of germinoma, with embryonal carcinomatous region, choriocarcinomatous region and focal mature teratomatous region. The authors diagnosed this case as mixed germ cell tumor.
Tumor Markers, Biological

Biological behavior of malignant tumors has been assessed by morphological grading, clinical staging, and estimating other tumor markers. Recently DNA ploidy measured by flow cytometry and image analyser has been suggested as an additional useful indicator of the tumor behavior. In order to extract useful tumor cell-specific information in ovarian mucinous tumors, DNA contents and other morphologic parameters were measured by image analysis and DNA ploidy was also measured by flow cytometry. In all cases of cystadenoma, DNA diploidies were observed. In borderline malignancy, DNA diploidies were chiefly observed except one case of polyploidy. In true malignancy, DNA aneuploidies were observed except one case of polyploidy and two cases of diploidies by image analysis, and except four cases of diploides and one cas of polyploidy by flow cytometry. The statistical significance were observed in DNA ploidy pattern by image analysis. In nuclear areas, perimeters and major axis, statistical significance were not observed. These results suggest that DNA ploidy pattern are more or less independent parameter as an additional useful indicator of the histological grade of malignancy and that image analysis are better than flow cytometry in detecting DNA aneuploidy.
Tumor Markers, Biological

Immunohistochemical staining on paraffin sections for S-100 protein improved diagnostic accuracy for melanocytic tumor. But specificity of S-100 protein in the diagnosis of melanocytic tumor is very low, because S-100 protein was also expressed in neurogenic tumor and salivary gland tumor. To investigate a specific tumor marker for the malignant melanoma, immunohistochemical staining for HMB-45 and S-100 protein was performed on the paraffin sections of 25 cases of malignant melanoma and 46 cases of nevi. Positive reaction for HMB-45 and S-100 protein was diffusely identified in the cytoplasm of tumor cells. Positive ratio for HMB-45 was 100% in malignant melanoma, 92% in junctional component of compound nevus and 0% in intradermal nevus. Positive ratio for S-100 protein was 92% in malignant melanoma, 100% in compound nevus and 100% in intradermal nevus. The sensitivity and specificity for HMB-45 in malignant melanoma were 100%, but those for S-100 protein were 92% in sensitivity and 86.7% in specificity. These results indicate that HMB-45 has a high sensitivity and specificity for malignant melanoma cells and it can be quite useful for the histopathological diagnosis of malignant melanoma.
Sensitivity and Specificity ; Tumor Markers, Biological

Epidermal growth factor receptor (EGFR) is an intergral membrane protein. Overexpression or mutation of EGFR may play a role in careinogenesis. Recently, many molecular biologic techniques have been used to study expression of oncogenes. One of them, in situ mRNA hybridization, using paraffin embedded blocks, offers a unique means to allow precise localization within histological preparations, and also overcomes problems relating to translation defects and abnormal translation. In order to confirm the usefulness of epidermal growth factor receptor as a tumor marker, and to compare the expression of EGFR between in situ MRNA hybridization and an immunohistochemical study, in situ MRNA hybridization was performed along with an immunohistochemical study for EGFR in paraffin sections of 84 uterine cervix carcinomas. A positive reaction for EGFR was observed mairdy in the cytoplasm of tumor cells. The vascular muscle layer and uterine muscle tissue around the cancer nest revealed a positive reaction in immunohistochemical stain for EGFR, with a negative reaction for EGFR mRNA. In the cancer nests, the immunohistochemical positive reaction for EGFR was strong in differentiated cells and keratin pearls, but a strong positive reaction for EGFR mRNA was localized in undifferentiated cells. The overall positive of immunostaing for EGFR was 77% for uterine cervix carcinoma; 71 % for carcinoma in situ, 71 % for microinvaseve carcinoma, and 89% for invasive carcinoma. The overall positivity of EGFR from in situ MRNA hybridization was 94% of the uterine cervix carcinoma; 93% for carcinoma in situ, 93% for microinvasive carcinoma, and 96% for invasive carcinoma. From these results, EGFR is a useful tumor marker for uterine cervix carcinoma, and in situ mRNA hybridization has greater sensitivity and specificity than immunohistochemistry.
Sensitivity and Specificity ; Tumor Markers, Biological

Generality - Material - Method: The IMX PSA, CA 19-9, CEA are Microparticle Enzyme Immune Assay (MEIA) for the quantitative measurement of tumor marker in human serum. Results: number of health subjects 30 (20 men, 10 women), number of patients 56 (42 men, 14 women). The results of studies indicated that the PSA assay value is frequently elevated > 10ng/ml in the serum of subjects with prostatic cancer, the sensitivity 70.6%. CA 19-9 assay value is elevated > 37 U/ml in the serum of pancreatic cancer subjects, the sensitivity (83.4%). CEA assay value is elevated > 10 ng/ml in the serum of colorectal carcinoma, the sensitivity (54.5%).
Prostatic Neoplasms ; Tumor Markers, Biological

The quantitative analysis of the concentration tumor marker CA15-3 by the immunoradioactive method in the serum of 26 normal persons without the tumor, hepatic diseases and chronic diseases ages of 18-50 has shown that this is method with high accuracy. The radioactive activity is direct proportional with the concentration of CA 15-3; The concentration of CA 15-3 in the normal people is 19,12+/-15,54 u/ml in which 90% persons have concentration under 30% u/ml. The concentration of CA 15-3 is most common in 4,71 u/ml.
Tumor Markers, Biological ; Chronic Disease

The oncogenes, which have been detected in various human solid tumors, transform culture cells, and the level of m-RNA specific for an oncogene increases in the cellular extract of the tumor cells. These findings suggested that oncogene expression was closely related with carcinogenesis. Recently, oncogen products were considered as tumor markers, but it was not confirmed that the relationship between quantitative change of oncogene product and malignant potential of a neoplasm. To evaluate the relationship between the quantitative change of oncogene product and malignant potential, immunohistochemical staining for the ras and myc oncogene products was performed in the sections of papilloma and transitional cell carcinoma of urinary bladder. 1) Positive reaction of c-ras oncogene product was noted along the cell membrane and in the cytoplasm, and c-myc oncogene product in the nucleus, and along the unclear membrane and cell membrane. 2) Tissue expression of c-ras oncogene was homogeneous and strong in the transitional cell carcinoma rather than in papilloma. 3) The ratio of the positive cells with c-ras oncogene product was 35.1% in the papilloma, 79.4% in the grade I, 81.9% in the grade II, 87.6%, in the grade III of transitional cell carcinoma of the urinary bladder. There was a tendency for the ratio to increase with the degree of histological grading. 4) By the immunoperoxidase staining of c-myc oncogene product, the number of the cells showing positive nuclear staining incrased with the tumor grading.
Humans ; Tumor Markers, Biological ; Carcinogens

Alpha-fetoprotein (AFP) is a well-known tumor marker for hepatocellular carcinoma, hepatoblastoma, and yolk sac tumors. There are several studies on AFP-producing tumors that arose from the gastrointestinal tract, pancreas, lung, kidney, and urachal tract. AFP-producing carcinoma of the gallbladder is extremely rare. We report a case of AFP-producing carcinoma of the gallbladder without liver involvement in a 58-year-old man with a gallstone, on which clinical, morphologic, and immunohistochemical studies were performed.
Male ; Humans ; Carcinoma, Hepatocellular ; Tumor Markers, Biological

Soft tissue tumor is defined as a tumor occurring in voluntary muscles, fat, fibrous tissue, along with the vessels serving these tissue and peripheral nervous system. It is difficult to make a diagnosis by conventional microscopic observation because of their pleuripotentiality and similar growth characteristics. Although their morphological findings of tumors are similar to one another, their clinical courses, treatment and prognosis are different. So early, correct diagnosis and proper treatment are neccessary. The present study is aimed to evaluate a value of immunoperoxidase staining to make definite diagnosis of soft tissue tumors and its application to surgical pathology. The material consisted of 106 cases of fibrohistiocytic tumors and malignant soft tissue tumors which are morphologically similar to malignant fibrohistiocytic tumors for 5 years period lasting from 1980 to 1984 at the Department of Pathology, Yonsei University College of Medicine. After the classificationof fibrohistiocytic tumors by the Enzinger (1983), clinical finndings were reviewed and peroxidase antiperoxidase(PAP) method with alpha1-antichymotrypsin was done in 15 cases of all fibrohistiocytic tumors. Other soft tissue tumors which were difficult to differentiate from MFH by light microscopic observation were liposarcoma, rhabdomyosarcoma, fibrosarcoma and malignant schwannoma. These 21 cases of tumors including MFH were stained with PAP method for alpha1-antichymotrypsin, S-100 protein and myoglobin. Results obtained were as follows: 1) The cases on study consisted of 19 cases of malignant fibrous histiocytoma, 2 dermatofibrosarcoma protuberans, 45 fibrohistiocytic tumors and 11 other benign fibrohistiocytic tumors. 2) The male to female ratio was 1 : 1.8 in benign and intermediate group of fibrohistiocytic tumor, but 2.2 : 1 in malignant histiocytic tumor. 3) Most cases of benign fibrohistiocytic tumors were occurred in 4th and 5th decade of life. Intermediate and malignant fibrohistiocytic tumors were mostly found in late adult life and their mean age was 43.6 year. 4) The most common sites were trunk and both extrimities in benign fibrohistiocytic tumors(88.9%), but head, neck and lower extremities in MFH (78.9%). Two cases of dermatofibrosarcoma protuberans were occurred in turnk and upper extremity. 5) The PAP stain for alpha1-antichymotrypsin was done in 15 cases of 77 fibrohistiocytic tumors which included MFH, dermatofibrosarcoma protuberans, xanthoma, xanthofibroma, dermatofibroma showed variable degree of positivity to alpha1-antichymotrypsin. The positivity of alpha1-antichymotrypsin revealed no significant difference according to differentiation of the tumors, such as benign, intermediate and malignant. 6) The PAP stain for alpha1-antichymotrypsin revealed diffuse positivity in all cases of MFH and also in a case of malignant schwannoma, fibrosarcoma, liposarcoma and rhabdomyosarcoma, but myoglobin and S-100 protein were negative. In three cases of leiomyosarcoma, two of rhabdomyosarcoma and three of malignant schwannoma, alpha1-antichymotrypsin, S-100 protein and myoglobin were negative, although a few positive tumor cells were present, which may the considered as metatypci differentiation. Another possibility of this discordance was loss of antigenicity by improper procedure of paraffin embedding and poor differentiation of tumor cells. In summary, PAP method for specific tumor marker is important for proper diagnosis of soft tissue tumors, and application to surgical pathology.
Adult ; Male ; Female ; Humans ; Tumor Markers, Biological

Subjects: Normal people without the benign or malignant tumor; standard sample of CA72-4 with concentrations: 0,3; 25; 50 100 u/ml. The results have shown that the standard chart has relatively same as theory; the change factor CV had value within allowed limit in the range of low concentration of CA 72-4 was 4,05+/- 3,06U/ml. The medium value was 4,92 u/ml. The normal range is from 0 to 9 u/ml. There is insignificant different between women and men.
Neoplasms ; Immunoradiometric Assay ; Tumor Markers, Biological