We performed a histopathologic and immunohistochemical study of 23 cases of surgically resected large cell undifferentiated carcinoma(LCUC) of the lung. The relative incidence of LCUC was 7.6% among the total resected cases of primary lung cancer over 7 years(1987-1993). The mean age of the patients was 56 years and 21 cases were male. The mean size of the mass was 5 cm and 11 cases were located peripherally. According to the histologic features, LCUC could be divided into three groups: squamous cell carcinoma-like(6 cases), adenocarcinoma-like(13 cases), and small cell carcinoma-like(4 cases) groups. The histologic differences were related to the variations of the immunohistochemical properties, but there were no differences in prognosis among these groups. Immunoreactivity to cytokeratin(CAM 5.2) was demonstrated in 22/23(96%). Carcinoembryonic antigen was positive in 13/23(57%). Neuron specific enolase and chromogranin were positive in 11/23(48%) and 5/23(22%), respectively. Vimentin was seen in 11/23(48%). From these observations, we could subclassify them by their immunologic phenotypes; exocrine features in 6/23(26%), neuroendocrine(NE) features in 4/23(17%), both exocrine and NE phenotypes in 7/23(30%), and 6 cases(26%) showed neither phenotype. The group with NE features showed a worse prognosis(P<0.05) and immunoreactivity for vimentin was also related to a worse prognosis(P<0.05). These findings imply that the immunohistochemical properties of LCUC are closely related to the histopathologic features. The groups, subdivided by histology and immunoreactivity, showed no prognostic difference except for the NE differentiation and reaction for vimentin.
Incidence ; Lung Neoplasms

It has been widely accepted that complete surgical resection of hepatoblastoma is essential for long-term survival. But unfortunately less that 50% of hepatic tumors in children can be totally removed at the time of diagnosis. This report is to present the experience of successful resection of hepatoblastoma after concurrent radiotherapy with transarterial chemoinfusion in a child. We believe this modality of treatment enables complete resection of unresectable hepatoblastoma, which is resistant to the systemic chemotherapy.
Child ; Diagnosis ; Drug Therapy ; Hepatoblastoma* ; Humans ; Radiotherapy*

No abstract available.
Keratins*

We examined the amyloid deposit in various malignant cutaneous epithelial tumors by using Dylon stain. Histochemically identifiable amyloid deposits associated with basal cell epitheliomas(BCEs), squamous cell carcinomas(SCCs) and Bowens diseases were studied with monoclonal cytokeratin antibodies and anti-amyloid P antibodies. The results were as follaws, l. Amyloid deposits were detected in 5 of 12 BCEs, 4 of 11 SCCs, 3 of 9 Bowens diseases and 1 of 8 actinic keratoses. Amyloid deposits were not detected in o keratoacanthomas, 2 verrucous carcinomas, 1. Pagets disease and 3 extramammary Pagets diseases. 2. Anti-keratin antibody 34BE12 and anti-amyloid P antibody reacted with amyloid deposits in 3 of 5 BCEs which showed abundant amyloid deposits by Dylon stain. 3. Of 4 SCCs which showed amyloid deposits by Dylon stain, anti-keratin ant.ibody 34pE12 reacted with amyloid deposits in 2 cases and anti-amyloid P antibody reacted with amyloid deposits in 3 cases. 4. Anti-amyloid P antibody reacted with arnyloid deposits in 3 of 3 Bowens diseases which showed arnyloid deposits by Dylon stain. Anti-keratin antibody 34pE12 reacted with amyloid deposits only 1 of them. These findings suggest that epidermal keratins are the percursor substance of amyloid in malignant cutaneous epithelial tumors. The difference of antikeratin staining pattern between BCE-associated amyloid and SCC or Bowens disease-associated amyloid may be the results of difference in development stage of cutaneous amyloids.
Amyloid* ; Antibodies ; Carcinoma, Verrucous ; Keratins ; Keratoacanthoma ; Keratosis, Actinic ; Plaque, Amyloid*

BACKGROUND: Histological differentiation between malignant melanoria and benign melanocytic skin lesions is at times, a difficult task for the dermatopathologist. The AgNOR staining has been regarded as a useful tool in differentiating malignant melanoma from benign rael;inocytic nevi. OBJECTIVE: We have carried out the AgNOR staining in a range of nelanocytic lesion and try to assess the value of AgNOR stairting in the identification of malignancy in melanocytic lesions. METHOD: Fifty seven melainocytic skin specimens were studied. These comprised 11 acquired melanocytic nevi, 11 congenital melanocytic nevi, 31 malignant melano nas and 4 atypical melanocytic hyperplasias. RESULT: The majority of benign nevus cells posessed one or two unifrm AgNORs, whereas marked AgNOR pleomorphism was found in some rnelanoma cells. The number of AgNORs per nucleus. averaged 1.24+0.12 in the 18 specimens of benign nevi and 2.10+0.6 in the 25 specimens of malignant melanoma. In the cases of atypical melanocytic hyperplasia it was not possible to count on an adequate number of cells to give a meaningful result because of melanin pigment. CONCLUSION: Although this study demonstrated a separation of average AgNOR counts between begnign melanocytic nevi and maligmant melanomas, there was an ovei lap in counts among individual lesions. For clinical use, there should be a standard method by which AgNORs are counted in AgNOR staining. Melanin pigment masiking the AgNORs can also be a problem.
Hyperplasia ; Melanins ; Melanoma ; Nevus ; Nevus, Pigmented ; Skin*

Pseudoaneurysm of splenic artery may arise from a vascular erosion by the inflammatory processes around the splenic artery, particularly in acute pancreatitis and chronic pancreatitis, which may cause rupture of pseudoaneurysm and life threatening hemorrhage. Collective experience with this massive hemorrhage is attended by a high mortality rate even with prompt therapy, and conservative management is associated with an almost 100 per cent of mortality rate. Identification of the bleeding site at laparotomy may be exceedingly difficult, which makes the preoperative detection of bleeding source desirable. Peripancreatic vascular lesions can be identified by angiography, and in selected cases the risk of urgent operation to control massive hemorrhage may be obviated by embolization. The authors have recently experienced a case of ruptured splenic artery pseudoaneurysm combined with a pancreatic pseudocyst in a 6 years old boy. A bolus enhanced CT scan and angiography were essential to confirm these complications of pancreatic pseudocyst. We managed this child successfully with an urgent procedure of transcatheter arterial embolization and another elective surgery of pancreatic pseudocyst.
Aneurysm, False* ; Angiography ; Child* ; Hemorrhage ; Humans ; Laparotomy ; Male ; Mortality ; Pancreatic Pseudocyst ; Pancreatitis ; Pancreatitis, Chronic ; Rupture ; Splenic Artery* ; Tomography, X-Ray Computed

PURPOSE: To evaluate the prognostic significances of p53 and cathepsin D in the prostatic carcinoma, we compared them to other prognostic factors, such as nuclear grade and clinical stage. MATERIALS AND METHODS: The material consisted of 40 paraffin-embedded, primary prostate carcinomas. We examined the expression of p53 and cathepsin D using immunohistochemical staining and compared their expression with the grade and stage. RESULTS: The expressions of p53 were noted in the nucleus of tumor cells and cathepsin D were noted in the cytoplasm of tumor cells. Thirteen of 40 tumors were positive for p53. There were more expressing p53 in samples (40%) from prostatic cancer with a high Gleason score group than in samples (28%) from prostatic cancer with low Gleason score group. The expression of p53 was 22% in clinical stage B and C groups and 35% in clinical stage D group. These results showed that p53 expression was not statistically correlated with Gleason score and clinical stage, but there were trends to increased p53 expression with high Gleason score and progressed clinical stage (p>0.05). Progressed clinical stage group showed higher expression of cathepsin D than early clinical stage group. However, there were no statistical correlations between expression of cathepsin D and Gleason score, and clinical stage (p>0.05). CONCLUSION: These results suggest that the overexpression of p53 and cathepsin D may be associated with tumor differentiation and clinical stage, but have limited prognostic value in prostatic carcinoma.
Cathepsin D* ; Cathepsins* ; Cytoplasm ; Neoplasm Grading ; Prostate ; Prostatic Neoplasms

Percutaneous infraclavicular subclavian catheterization has been widely used for a total parenteral nutrition, hemodynamic monitoring and for venous access in difficult clinical situations. Many authors have claimed the infraclavicular cannulation of the subclavian vein in the tiniest infants can be performed with safety and ease, but there are always possibility of serious complications in this method. We present our experiences of peripheral venous cutdown with Broviac catheter. Author routinely introduced Broviac catheter into central vein via peripheral venous cutdown. There was no life threatening complications and no catheter related death. The complication rate was very low. The catheter related sepsis was documented in only two patient(4.7%). The average catheter longivity was 19.59 days. In view of the safety and low rate of complication, we think that peripheral venous cutdown with Broviac catheter should be the method of choice when central venous access is neccesary in infants. The infraclavicular subclavian catheterization should be reserved in infants with few accessable peripheral vein.
Catheterization ; Catheterization, Central Venous ; Catheters ; Central Venous Catheters ; Hemodynamics ; Humans ; Infant ; Methods ; Parenteral Nutrition, Total ; Sepsis ; Subclavian Vein ; Veins ; Venous Cutdown

The purpose of this study was to evaluate the viability of periodontal ligament cells in rat teeth using slow cryo-preservation method under pressure by means of MTT assay and WST-1 assay. Eighteen teeth of Sprague-Dawley white female rats of 4 week-old were used for each group. Both sides of the first and second maxillary molars were extracted as atraumatically as possible under Tiletamine anesthesia. The experimental groups were group 1 (Immediate control), group 2 (Cold preservation at 4degrees C for 1 week), group 3 (Slow freezing), group 4 (Slow freezing under pressure of 3 MPa). F-medium and 10% DMSO were used as preservation medium and cryo-protectant. For cryo-preservation groups, thawing was performed in 37degrees C water bath, then MTT assay and WST-1 assay were processed. One way ANOVA and Tukey method were performed at the 95% level of confidence. The values of optical density obtained by MTT assay and WST-1 were divided by the values of eosin staining for tissue volume standardization. In both MTT and WST-1 assay, group 4 showed significantly higher viability of periodontal ligament cells than group 2 and 3 (p < 0.05), but showed lower viability than immediate control group. By the results of this study, slow cryo-preservation method under pressure suggests the possibility for long term cryo-preservation of the teeth.
Anesthesia ; Animals ; Baths ; Dimethyl Sulfoxide ; Eosine Yellowish-(YS) ; Female ; Freezing ; Humans ; Molar ; Periodontal Ligament ; Rats ; Tiletamine ; Tooth

PURPOSE: This study is to define the structural patterns of pregnancy motivation of married women. METHOD: Q-methodology was used on 110 statements collected from interviews with women and a literature review. 38 Q-samples were selected. The Q-samples were administerd to 30 randomized P-sample. RESULT: Data analysis of Q-type obtained by QUANL program shows three types of subjectivity in the perception of pregnancy motivation. Type 1, "Family-connection strengthening", Pregnancy motivation is characterized by the tendency to make home, to tie family member, to connect couple firmly. Type 2,"Self-satisfaction", Women of this type take pleasure and happiness from child rearing in terms of being a mother and having maternal affection. Type 3, "Self-centered", This type of pregnancy motivation puts on high emphasis on self achievement and they make a family planning suitable for the maternal role. CONCLUSION: The stronger was women's pregnancy motivation, the more positive were women's pregnancy experience and maternal role attainment. Therefore, When nurses take care of pregnancy women, they should understand the women's psycho-social aspects and then apply a program of nursing intervention to the pregnant women, It is necessary to continue to study on social and psychological problems related to pregnancy.
Child ; Child Rearing ; Family Planning Services ; Female ; Happiness ; Humans ; Korea* ; Mothers ; Motivation* ; Nursing ; Pleasure ; Pregnancy* ; Pregnant Women ; Statistics as Topic