BACKGROUND: There is a long-standing controversy whether melanocytes in vitiligo of more than 1 year duration are actually lost or still present. Resolving this matter is essential in understanding the underlying pathology and for the development of the treatment. On previous immunohistochemical and ultrastructural studies of vitiligo lesions, damage of melanocyte and keratinocyte in early lesions were reported and complete absence of melanocyte in long standing lesions were known. OBJECTIVE: This study aimed to determine the existence of the differences in pathologic changes in melanocytes according to the duration of the lesion. METHODS: We investigated the vitiliginous skin samples from 31 patients with early(less than 1 year duration) vitiligo and 30 patients with long standing(l to 5 years duration) vitiligo under the electron microscopy. RESULTS: Multiple degenerative changes in melanocytes were observed in the early and long standing lesions. In long standing lesions, degeneration of melanocytes including pyknotic, in-dented nuclei, vacuolated cytoplasms and blunted dendrites were more pronounced than early lesions. Even in long standing lesions, definite or presumptive melanocytes were observed in 16(53.3%) of 30 cases. CONCLUSION: Our results suggest that the melanocytes of vitiligo lesions were damaged and that the percentage of degenerative changes increase in accordance with the duration of the lesion. However, in long standing lesions as well as in early lesions, some residual melanocytes can be observed ultrastructurally.
Cytoplasm ; Dendrites ; Humans ; Keratinocytes ; Melanocytes ; Microscopy, Electron ; Pathology ; Skin ; Vitiligo*

PURPOSE: The objective of this study was to evaluate the Caspase 3 and p21 expression level and to understand the correlation between Caspase 3 expression and the clinical factors in renal cell carcinoma. MATERIALS AND METHODS: Forty-two patients with renal cell carcinoma were enrolled in this study. Immunohistochemical staining of Caspase 3 and p21 was performed in formalin-fixed and paraffin-embedded tissue sections using rabbit polyclonal antibody (Caspase 3) and mouse antibody (p21). The Caspase 3 and p21 expression levels were compared with the TNM stage, Fuhrman grade, pathological type and survival rates. RESULTS: The Caspase 3 expression level correlated only with the Fuhrman grade (p=0.017). There was no significant correlation between the Caspase 3 and p21 expression level. The prognostic values did not correlate with the Caspase 3 and p21 expression level. CONCLUSIONS: The prognostic value of the Caspase 3 expression level in renal cell carcinoma was insufficient. The relationship between Caspase 3 and p21 was not proven in renal cell carcinoma, and new factors may be implicated with Caspase 3.
Animals ; Apoptosis ; Carcinoma, Renal Cell* ; Caspase 3* ; Humans ; Mice ; Prognosis ; Survival Rate

BACKGROUND: Recently, the molecular pathologic investigation for clonality in lymphomas has been introduced and has gained a role in the diagnosis of lymphomas. In fact, the clonality test using TCRGR phenomenon has been done by Southern blot analysis (SBA) and polymerase chain reaction (PCR) for molecular pathologic diagnosis of T cell lymphomas. However, it is difficult to perform SBA with paraffin embedded specimens or with samples of small skin biopsies. OBJECTIVE: We investigated the efficacy of PCR amplification of TCR gene in paraffin em-bedded cutaneous T cell lymphomas. METHODS: Iii this study, the clonality was assessed by polymerase chain reaction (PCR) analysis of T cell receptor gamma (TCR) gene from the DNA extracts obtained from paraffin em-bedded tissues (PET) of malignant T cells, B cell lymphomas, and benign cutaneous T cell proliferative disorders. Heteroduple-x-analyses were also performed to rule out the false positives. RESULTS: Among the total of 62 cases analyzed, monoclonality was observed in 4 out of 10 mycosis fungoides, 7 out of 9 cutaneous T cell lymphomas excluding mycosis fungoides, 1 out of 3 angiocentric lymphomas, 2 out of 2 lymphomatosis papulosis, 1 out of 7 large plaque parapsoriasis, and 1 out of 2 T cell lymphomas in other organs. No monoclonality was observed in 9 inflammatory cutaneous diseases, 5 small plaque parapsoriasis, 4 cutaneous B cell lymphomas, and 11 B cell lymphomas in lymph nodes. CONCLUSION: The results suggest that the PCR method and heteroduplex analysis used in this study were not only practical but also efficacious for the diagnosis of cutaneous T cell lymphomas using tissues embedded in paraffins.
Biopsy ; Blotting, Southern ; Diagnosis ; DNA ; Gene Rearrangement* ; Genes, T-Cell Receptor ; Heteroduplex Analysis* ; Lymph Nodes ; Lymphoma ; Lymphoma, B-Cell ; Lymphoma, T-Cell ; Lymphoma, T-Cell, Cutaneous ; Mycosis Fungoides ; Paraffin ; Parapsoriasis ; Polymerase Chain Reaction* ; Receptors, Antigen, T-Cell* ; Skin ; T-Lymphocytes

BACKGROUND: A papillary carcinoma in the breast is a rare carninoma with a predominantly papillary growth patttern. Its incidence is said to be 1% to 2% of all breast carcinomas in women. Because of its rarity, little is known about its histopathological features. This study was undertake to analyze the histopathological characteristics of papillary breast cancer. METHODS: During the 17 years from January 1980 through December 1996, among 2166 primary breast cancer patients, 26 patients, who had been diagnosed with papillary breast cancer pathologically at the Department of Surgery, Seoul National University Hospital, were elegible for this study. The histopathological characteristics of the tumors in these patients, including immunohistochemically stained tumor marker-e.g., bcl2, c-erbB2, cathepsin D, and p53-were compared to those of patients with an invasive ductal carcinoma, NOS (IDC). RESULTS: The mean age of the patients was 47 years old, ranging from 28 to 74 years. There was no statistically significant difference in the primary tumor size between the papillary cancer and the IDC (2.62 cm vs 3.33 cm, p=0.127). Twenty-four of the papillary cancer patients had no metastatic axillary node, and metastatic nodes were present in the papillary cancer than in the IDC, with statistical significance (0.27+/-0.19 vs 3.43+/-0.08, p=0.023). Papillary cancer seemed to have more frequent ER and PgR (60%, 77.8%) than IDC (44.1%, 56.1%), but there was no significance to these results (p=0.351, 0.309). In terms of tumor markers, the positivity of bcl2, c-erbB2, cathepsin D, and p53 in papillary cancer were 42.9%, 100%, 85.5%, and 66.7%, respectively. Of all significance, immunohistochemically determined tumor markers, c-erbB2 expression was observed with statistical significance, more frequently in papillary cancer (100% vs 68.5%, p=0.044). Patients with papillary cancer had an overall 10-year survival rate of 83.3%. CONCLUSION:Papillary breast cancer had fewer metastatic axillary node, but with little statistical significance for a more favorable outcome. The relation between c-erbB2 expression and papillary cancer seems to be interesting and needs to be further elucidated.
Biomarkers, Tumor ; Breast Neoplasms ; Breast* ; Carcinoma, Ductal ; Carcinoma, Papillary ; Cathepsin D ; Female ; Humans ; Incidence ; Middle Aged ; Seoul ; Survival Rate

PURPOSE: The purpose of this study was to investigate the effects of the insertion depth of an immediately loaded implant on the stress distribution of the surrounding bone and the micromovement of the implant using the three-dimensional finite element analysis. MATERIALS AND METHODS: A total of five bone models were constructed such that the implant platform was positioned at the levels of 0.00 mm, 0.25 mm, 0.50 mm, 0.75 mm, and 1.00 mm depth from the crest of the cortical bone. A frictional coefficient of 0.3 and the insertion torque of 35 Ncm were simulated on the interface between the implant and surrounding bone. A static load of 178 N was applied to the provisional prosthesis with a vertical load in the axial direction and an oblique load at 30°with respect to the central axis of the implant, then a finite element analysis was performed. RESULTS: The implant insertion depth significantly affected the stress distribution on the surrounding bone. The largest micromovement value of the implant was 39.34 µm. The oblique load contributed significantly to the stress distribution and micromovement in comparison to the vertical load. CONCLUSION: Increasing the implant insertion depth was advantageous in dispersing the concentrated stress in the cortical bone and did not significantly affect the micromovement associated with early osseointegration failure.
Dental Implants ; Finite Element Analysis* ; Friction ; Immediate Dental Implant Loading ; Maxilla* ; Osseointegration ; Prostheses and Implants ; Torque

No abstract available.
Intestinal Obstruction ; Lung ; Lung Neoplasms ; Superior Mesenteric Artery Syndrome

BACKGROUND: With no current method of prevention available, early detection of breast cancer by regular self and clinical examination in conjunction with screening mammography is emphasized. The rate of asymptomatic breast cancer detection has been increased due to the ability of mammography. METHODS: To address questions about the biology and clinical manifestation of mammographically detected breast cancer, a retrospective analysis was performed to the 31 cases of asymptomatic breast cancer treated from Jan. 1989 to Dec. 1996 at Department of Surgery, Seoul National University Hospital. RESULTS: The mean age was 50.0 with ranges from 27 to 80. The peak age was 5th decade. The most common mammographic findings of asymptomatic breast cancer was microcalcification (22 cases, 71.1%). Eighteen patients underwent modified radical mastectomy (58.1%): simple mastectomy in 4 cases (12.9%), and breast conserving surgery in 9 cases (29.0%). The histologic types were as follows: infiltrating ductal carcinoma in 17 cases (64.5%), microinvasive carcinoma in 3 cases (9.6%) and ductal carcinoma in situ in 9 cases (29.0%). Twenty one patients showed smaller than 1 cm in tumor size. Only 3 cases of invasive ductal carcinomas had axillary nodal metastasis. All cases except four cases demonstrated stage 0 (29.1%) and stage I (54.8%) according to the AJCC classification: whereas the rate of stage 0 and I in symptomatic patients during same study period was 4.1% and 19.6% respectively. CONCLUSIONS: The result of our study indicate that several benefits of mammographic screening are likely the result of detection of invasive carcinoma at an early stage and detection of noninvasive carcinoma that may later develop into or mark increased risk of invasive carcinoma. A prospective and systematic approach for evaluating efficiency of screening mammography would be necessary in Korea.
Biology ; Breast Neoplasms* ; Breast* ; Carcinoma, Ductal ; Carcinoma, Intraductal, Noninfiltrating ; Classification ; Humans ; Korea ; Mammography ; Mass Screening ; Mastectomy, Modified Radical ; Mastectomy, Segmental ; Mastectomy, Simple ; Neoplasm Metastasis ; Retrospective Studies ; Seoul

PURPOSE: We analyzed the medical costs for severely traumatized patients according to the severity and medical performance so that we couldimprove the financial balance of the trauma center. METHODS: Retrospective analysis was performed on patients visitingSNUH Trauma Center from May 2011 to August 2011. Among a total of 55 severely traumatized patients, 31 patients whose medical bills were available and categorized were included in this study. The injury severity score (ISS) was calculated from the abbreviated injury score (AIS), which was updated in 2008,for each patient to assess the severity of injury. Major trauma was defined as an ISS above 15. RESULTS: The 31 patients in this study included 20 males and 11 females. The average ISS was 33.23+/-16.65 points.We categorize the patients into three groups according to ISS, 16-24: group 1, 25-40: group 2, and above 41: group 3. Total incomes, admission fees, surgery fees, and imaging test fees are shown in table 1. The costs seem to be higher costs in group 2, but this result has no statistical significance. Statistical significantly data are as follows: high radiologic test fees in group 1, short hospital stay in groups 1 and 2, and short ICU stay in group 1. The averagehospital stay was 17 days, and the average emergency intensive care unit (EICU) stay was 7.5 days. Although the EICU stay was only 44% of the total hospital stay, the income from the EICU covers 79.4% of the total hospital income. CONCLUSION: From this study, we found several items that show relatively high medical income from severely traumatized patients visiting the SNUH Trauma Center. Most of the medical fees arise in the early phase of acute medicine usually in the ICU. Efforts to identify the items with high income and to minimize expenses will improve the financial structure of the Trauma Center,which is facing a budget crisis.
Budgets ; Emergencies ; Fees and Charges ; Fees, Medical ; Female ; Humans ; Injury Severity Score ; Intensive Care Units ; Length of Stay ; Male ; Retrospective Studies ; Trauma Centers

Although local anesthetics can cause adverse drug reactions (ADRs), most ADRs to local anesthetics are from vasovagal, toxic, or anxiety reactions, while immunoglobulin E (IgE)-mediated anaphylaxis is extremely rare. We report a case of IgE-mediated anaphylactic reaction to lidocaine. A 27-year-old male patient who had two episodes of anaphylactic reactions after local injection of lidocaine was referred to our clinic for the safe use of local anesthetics for the subsequent dental procedure. Skin prick and intradermal tests were performed with amide local anesthetics; lidocaine, bupivacaine, mepivacaine, and ropivacaine. Lidocaine and mepivacaine showed positive response in prick test, and lidocaine, mepivacaine, and bupivacaine showed positive reactions in intradermal test. Only ropivacaine showed negative response both in prick and in intradermal test, and the patient was successfully treated with it. To detect serum-specific IgE, we prepared lidocaine-human serum albumin (HSA) conjugate. Enzyme-linked immunosorbent assay result showed high level of specific IgE to lidocaine-HSA conjugate in serum of the patient. This case suggests that local anesthetics can elicit specific IgE-mediated allergic reactions, and both skin prick and intradermal test should be performed in case of suspected IgE-mediated allergic response to local anesthetics.
Amides ; Anaphylaxis ; Anesthetics, Local ; Anxiety ; Bupivacaine ; Drug Toxicity ; Enzyme-Linked Immunosorbent Assay ; Humans ; Hypersensitivity ; Immunoglobulin E ; Immunoglobulins ; Intradermal Tests ; Lidocaine ; Male ; Mepivacaine ; Serum Albumin ; Skin

Behcet's disease is a recurrent and multisystemic disorder which usually persists over many years and is classified under vasculitic syndrome. A classic triad in this disorder is composed of a recurrent oral ulcer, genital ulceration and uveitis. While intestinal Behcet's disease most commonly affects the ileoecal region, dysphagia associated with esophageal ulceration is very uncommon. A 34-year-old-female patient visited our hospital because of dysphagia, epigastric pain and fever. The patient had ulcers on the oral mucosa, soft palate and extemal genitalia. Multiple irregularly marginated ulcers surrounded with hyperemic edematous mucosa were found on the middle and distal esophagus and lesser curvature of the stomach by an esophagogastroduodenoscopic examination. The pathologic findings were non-specific ulcers with necrotizing vasculitis in the vulva and with suspicious vasculitis in the esophagus. So she was diagnosed to have a Behcets disease and was treated with steroid and sulfasalazine. In this study we report a case of esophageal involvement of Behcet's disease with a review of the literature.
Deglutition Disorders ; Esophagus ; Fever ; Genitalia ; Humans ; Mouth Mucosa ; Mucous Membrane ; Oral Ulcer ; Palate, Soft ; Stomach ; Sulfasalazine ; Ulcer ; Uveitis ; Vasculitis ; Vulva